Готові списки джерел за темами / Acceptor Systems

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Добірка наукової літератури з теми "Acceptor Systems"

Автор: Grafiati

Опубліковано: 11 березня 2023

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Статті в журналах з теми "Acceptor Systems"

Zhang, Deqing, and Martin Heeney. "Organic Donor–Acceptor Systems." Asian Journal of Organic Chemistry 9, no. 9 (September 2020): 1251. http://dx.doi.org/10.1002/ajoc.202000465.

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Kotowicz, Sonia, Mateusz Korzec, Agnieszka Katarzyna Pająk, Sylwia Golba, Jan Grzegorz Małecki, Mariola Siwy, Justyna Grzelak, Sebastian Maćkowski, and Ewa Schab-Balcerzak. "New Acceptor–Donor–Acceptor Systems Based on Bis-(Imino-1,8-Naphthalimide)." Materials 14, no. 11 (May 21, 2021): 2714. http://dx.doi.org/10.3390/ma14112714.

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In this paper, six novel symmetrical bis-(imino-1,8-naphthalimides) differing in core and N-substituent structure were synthesized, and their thermal (TGA, DSC), optical (UV-Vis, PL), electrochemical (DPV, CV) properties were evaluated. The compounds were stable to 280 °C and could be transferred into amorphous materials. Electrochemical investigations showed their ability to occur reductions and oxidations processes. They exhibited deep LUMO levels of about −3.22 eV and HOMO levels above −5.80 eV. The optical investigations were carried out in the solutions (polar and non-polar) and in films and blends with PVK:PBD. Bis-(imino-1,8-naphthalimides) absorbed electromagnetic radiation in the range of 243–415 nm and emitted light from blue to yellow. Their capacity for light emission under voltage was preliminarily tested in devices with an active layer consisting of a neat compound and a blend with PVK:PBD. The diodes emitted green or red light.

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Pilarczyk, K., K. Lewandowska, K. Mech, M. Kawa, M. Gajewska, B. Barszcz, A. Bogucki, A. Podborska, and K. Szaciłowski. "Charge transfer tuning in TiO2 hybrid nanostructures with acceptor–acceptor systems." Journal of Materials Chemistry C 5, no. 9 (2017): 2415–24. http://dx.doi.org/10.1039/c6tc05190a.

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Pop, Flavia, and Narcis Avarvari. "Covalent non-fused tetrathiafulvalene–acceptor systems." Chemical Communications 52, no. 51 (2016): 7906–27. http://dx.doi.org/10.1039/c6cc01827k.

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Ignat'ev, N., L. Netchitaylo, R. Garlyauskaite, and L. Yagupolskii. "Electrochemical reduction of super-acceptor systems." Journal of Fluorine Chemistry 58, no. 2-3 (August 1992): 280. http://dx.doi.org/10.1016/s0022-1139(00)80736-8.

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Im, C., W. Tian, H. Bässler, A. Fechtenkötter, M. D. Watson, and K. Müllen. "Photoconduction in organic donor–acceptor systems." Journal of Chemical Physics 119, no. 7 (August 15, 2003): 3952–57. http://dx.doi.org/10.1063/1.1590954.

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Zych, Dawid, та Aneta Slodek. "Acceptor-π-Acceptor-Acceptor/Donor systems containing dicyanovinyl acceptor group with substituted 1,2,3-triazole motif – synthesis, photophysical and theoretical studies". Journal of Molecular Structure 1204 (березень 2020): 127488. http://dx.doi.org/10.1016/j.molstruc.2019.127488.

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Maiya, G. Bhaskar, and V. Krishnan. "Intramolecular electron transfer in donor-acceptor systems. Porphyrins bearing trinitroaryl acceptor group." Journal of Physical Chemistry 89, no. 24 (November 1985): 5225–35. http://dx.doi.org/10.1021/j100270a022.

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Duan, Pengfei, Deepak Asthana, Takuya Nakashima, Tsuyoshi Kawai, Nobuhiro Yanai, and Nobuo Kimizuka. "All-or-none switching of photon upconversion in self-assembled organogel systems." Faraday Discussions 196 (2017): 305–16. http://dx.doi.org/10.1039/c6fd00170j.

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Aggregation-induced photon upconversion (iPUC) based on a triplet–triplet annihilation (TTA) process is successfully developed via controlled self-assembly of donor–acceptor pairs in organogel nanoassemblies. Although segregation of donor from acceptor assemblies has been an outstanding problem in TTA-based UC and iPUC, we resolved this issue by modifying both the triplet donor and aggregation induced emission (AIE)-type acceptor with glutamate-based self-assembling moieties. These donors and acceptors co-assemble to form organogels without segregation. Interestingly, these donor–acceptor binary gels show upconversion at room temperature but the upconversion phenomena were lost upon dissolution of the gels on heating. The observed changes in TTA-UC emission were thermally reversible, reflecting the controlled assembly/disassembly of the binary molecular systems. The observed on/off ratio of UC emission was much higher than that of the aggregation-induced fluorescence of the acceptor, which highlights the important role of iPUC, i.e., multi-exciton TTA for photoluminescence switching. This work bridges iPUC and supramolecular chemistry and provides a new strategy for designing stimuli-responsive upconversion systems.

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DelPo, Courtney A., Saeed-Uz-Zaman Khan, Kyu Hyung Park, Bryan Kudisch, Barry P. Rand, and Gregory D. Scholes. "Polariton Decay in Donor–Acceptor Cavity Systems." Journal of Physical Chemistry Letters 12, no. 40 (October 1, 2021): 9774–82. http://dx.doi.org/10.1021/acs.jpclett.1c02644.

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Дисертації з теми "Acceptor Systems"

Zheng, Meng. "Graphene based donor acceptor systems." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3422210.

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An efficient method to exfoliate graphite to prepare exfoliated few-layer graphene (EXG) was carried out in this thesis. Through proper centrifugation at different rounds per minute (rpm), three kinds of exfoliated graphene flakes (EXG 800, EXG 1500 and EXG 3000) with different qualities were obtained. The qualities of these EXG flakes were characterized by TEM, TGA and Raman spectroscopy. Raman spectra also states that the EXG 3000 flakes were of good quality and can be highly functionalized. Further research was focussed on the functionalization of EXG 3000 with charge donating π-centre based on diketopyrollopyrrole (DPP). The resulting hybrids graphene material has good solubility in organic solvent and wide light absorption (500 nm - 800 nm) features. Electron or energy transfer from DPP chromophores to EXG flakes was confirmed by the efficient fluorescence quenching of DPP chromophores. The new hybrid materials are under investigation as a third component in P3HT: PCBM bulk-heterojunction blends for organic photovoltaic applications.
In questa tesi è stato condotto un metodo efficiente per esfoliare la grafite per preparare il grafene a pochi strati esfoliato (EXG). Attraverso un'adeguata centrifugazione a diversi giri al minuto (rpm), sono stati ottenuti tre tipi di scaglie di grafene esfoliate (EXG 800, EXG 1500 ed EXG 3000) con qualità diverse. Le qualità di questi fiocchi EXG erano caratterizzate dalla spettroscopia TEM, TGA e Raman. Gli spettri Raman affermano inoltre che i fiocchi EXG 3000 erano di buona qualità e possono essere altamente funzionalizzati. Ulteriori ricerche si sono concentrate sulla funzionalizzazione di EXG 3000 con donazione di carica π-center basata sul diketopirollopirrolo (DPP). Il risultante materiale ibrido di grafene presenta una buona solubilità in solventi organici e ampie caratteristiche di assorbimento della luce (500 nm - 800 nm). Il trasferimento di elettroni o di energia dai cromofori DPP ai fiocchi EXG è stato confermato dall'efficace spegnimento della fluorescenza dei cromofori DPP. I nuovi materiali ibridi sono in fase di studio come terzo componente di P3HT: miscele di eterogiunzione di massa PCBM per applicazioni fotovoltaiche organiche.

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Guégano, Xavier. "Synthetic exploration of tetrathiafulvalene based donor-acceptor systems /." [S.l.] : [s.n.], 2009. http://opac.nebis.ch/cgi-bin/showAbstract.pl?sys=000288151.

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Thomas, Michael Brandon. "Donor-Acceptor Systems: Photochemistry and Energy Harvesting Applications." Thesis, University of North Texas, 2020. https://digital.library.unt.edu/ark:/67531/metadc1703335/.

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Donor-acceptor systems have unique properties that make them ideal candidates for solar energy harvesting through mimicry of natural photosynthesis. This dissertation is focused on unraveling those unique properties in various types of donor-acceptor systems. The systems investigated are categorized as closely linked, push-pull, supramolecular, and multi-unit. As part of the study, photosynthetic analogues based on BF2-chelated dipyrromethene (BODIPY), porphyrin, phthalocyanine, truxene, ferrocene, quinone, phenothiazine (PTZ), perylenediimide (PDI), fullerene (C60), dicyanoquinodimethane (DCNQ), tetracyanobutadiene (TCBD), and triphenylamine (TPA) are investigated. The effects of proximity between donor-acceptor entities, their geometrical orientation relative to each other, push-pull character of substituents, and competitive energy and electron transfer are examined. In all systems, primary events of photosynthesis are observed, that is absorption and energy transfer and/or electron transfer is witnessed. Ultrafast transient absorption spectroscopy is utilized to characterize the photo-induced events, while other methods such as steady-state luminescence, cyclic voltammetry, differential pulse voltammetry, chronoamperometry, and computational calculations are used to aid in the characterization of the donor-acceptor systems, in particular their applicability as solar energy harvesters.

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Martin, P. J. P. "Electrical, magnetic and optical characterisation of donor-acceptor systems." Thesis, Cranfield University, 1991. http://dspace.lib.cranfield.ac.uk/handle/1826/10404.

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Three novel donor-acceptor systems have been characterised through their spectroscopic properties, magnetic susceptibility, conductivity and second harmonic generation. The magnetic properties of (H2DPE)xx+(DPE)^ x(TCNQ)gX and (H2DPA)xx+(DPA) 1 x(TCNQ)gX' where DPE = 1,2-di(4-pyridyl)ethylene, DPA = 1,2-di(4-pyridyl)ethane, TCNQ = tetracyanoquinodimethane and H2 signifies proton diquaternisation, have been found to depend upon the stoichiometry: For x > \ the magnetic susceptibility decreases with increasing x whereas for x ~ \ it is anomolously large, being ferromagnetically enhanced above the Curie Law value. A possible model involving spin dilution is proposed and its predictions are compared with the experimental results. Langmuir-Blodgett (LB) films of the long-chained analogues of the materials, (C^g)2DPE (TCNQ) 2 and (Cig^DPE^TCNQ)^" where (C16) 2 = bis(hexadecyl) were deposited and characterised. The conductivities of the LB films of the mixed valence system were found to be ~ 1000 times greater than those of the system lacking TCNQ^ molecules. Multiple layer LB films of trans-4-[4- (dimethylamino)styryl]-1- octadecylpyridinium iodide and trans-4-[4-(dimethylamino)styryl]-1- octadecylquinolinium iodide interleaved with 4,4'-dioctadecyl-3,5,3',5' -tetramethyldipyrrylmethene hydrobromide were deposited. The materials form an interlocking bilayer structure which renders their LB films exceptionally well-organised. The films’ second harmonic generation was investigated and one film was found to give the largest second harmonic signal yet seen from an LB structure.

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Yu, Craig. "Design and Synthesis of Donor-Acceptor π-Conjugated Systems". Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37930.

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Organic π-conjugated molecules have garnered significant attention in the past twenty years for their potential applications in low-cost, lightweight, and flexible electronic devices. In particular, donor-acceptor (D-A) systems that involve the combination of electron-rich and electron-poor moieties in a molecule have been extensively studied due to tunability in intramolecular orbital interactions and materials properties. The theme of the current thesis is on the investigations of three different forms of D-A systems. Chapter 2 focuses on the design and synthesis of halogen-bonded organic frameworks using π-conjugated precursors as halogen bond donors and acceptors. The resulting co-crystals were subjected to single-crystal, thermal stability, and solid-state photophysical studies. In chapter 3, a series of D-A π-conjugated small molecules containing triphenylamine as the donor and an SF5 group as the acceptor was designed. The investigations include their synthesis, intramolecular orbital interactions, and photophysical properties. Chapter 4 introduces a pyrazine-containing D-A polymer using two metal-free polymerization methods, and the photophysical properties of the polymer can be significantly tuned using postpolymerization techniques.

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Das, Sushanta Kumar. "Carbon Nanostructure Based Donor-acceptor Systems for Solar Energy Harvesting." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc407823/.

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Carbon nanostructure based functional hybrid molecules hold promise in solarenergy harvesting. Research presented in this dissertation systematically investigates building of various donor-acceptor nanohybrid systems utilizing enriched single walled carbon nanotube and graphene with redox and photoactive molecules such as fullerene, porphyrin, and phthalocyanine. Design, synthesis, and characterization of the donor-acceptor hybrid systems have been carefully performed via supramolecular binding strategies. Various spectroscopic studies have provided ample information in terms of establishment of the formation of donor-acceptor hybrids and their extent of interaction in solution and eventual rate of photoinduced electron and/or energy transfer. Electrochemical studies enabled construction of energy level diagram revealing energetic details of the possible different photochemical events supported by computational studies carried out to establish the HOMO-LUMO levels in the donor acceptor systems. Transient absorption studies confirmed formation of charge separated species in the donor-acceptor systems which have been supported by electron mediation experiments. Based on the photoelectrochemical studies, IPCE of 8% was reported for enriched SWCNT(7,6)-ZnP donor-acceptor systems. In summary, the present investigation on the various nanocarbon sensitized donor-acceptor hybrids substantiates tremendous prospect, that could very well become the next generation of materials in building efficient solar energy harvesting devices andphotocatalyst.

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Xu, Yunhua. "Synthesis and Photoinduced Electron Transfer of Donor-Sensitizer-Acceptor Systems." Doctoral thesis, Stockholm : Department of Organic Chemistry, Stockholm University, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-411.

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Kercher, Michael. "Ruthenium tris(bipyridine) derivatives photoactive units in supramolecular donor acceptor systems /." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=966018834.

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Kimura, Akihiro. "General theory of excitation energy transfer in donor-mediator-acceptor systems." American Institite of Physics, 2009. http://hdl.handle.net/2237/12630.

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Stelzig, Timea [Verfasser]. "Donor–acceptor systems in the quest for organic semiconductors / Timea Stelzig." Mainz : Universitätsbibliothek Mainz, 2012. http://d-nb.info/1022300717/34.

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Книги з теми "Acceptor Systems"

1908-, Gutmann Felix, ed. Charge transfer complexes in biological systems. New York: M. Dekker, 1997.

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United States. Dept. of Energy. Office of Civilian Radioactive Waste Management, ed. Physical system requirements-- accept waste. Washington, D.C: The Office, 1992.

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The benzodiazepine receptor: Drug acceptor only or a physiologically relevant part of our central nervous system? Cambridge: Cambridge University Press, 1987.

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Shackelford, Douglas A. A unifying model of how the tax system and generally accepted accounting principles affect corporate behavior. Cambridge, Mass: National Bureau of Economic Research, 2007.

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United States. Dept. of Defense., ed. Defense acquisition: Guidance is needed on payments for conditionally accepted items : report to the Secretary of Defense. Washington, D.C: The Office, 1997.

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Evtushenko, Sergej, and Viktor Logvinov. Resistance of materials. Laboratory works. 4th edition. 4th ed. ru: Publishing Center RIOR, 2016. http://dx.doi.org/10.12737/16966.

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Data on laboratory works on resistance of materials are provided, the assessment of errors of results of measurements and experiments is given, statistical processing of experimental data is in detail stated. The book contains information on nondestructive methods and control devices of characteristics and diagnostics of materials and designs. In a grant the International system of units (SI) (tab. 1 of the Appendix) is used, designations of sizes are accepted according to the international recommendations of ISO. Data on physicomechanical characteristics of steel, cast iron, non-ferrous metals, wood and polymers and the allowed tension for them are provided in tab. 2-8 of the Appendix. The grant is intended for the students studying courses of resistance of materials, mechanics of materials and designs, applied mechanics, construction mechanics and construction designs.

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Shinn, George Wolfe. Some modern substitutes for Christianity: A consideration of the claims of theosophy, Christian Science, spiritualism, socialism and agnosticism, and of the reasons for declining to accept any one of these systems as a substitute for Christianity. 3rd ed. New York: T. Whittaker, 1990.

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Kirchman, David L. Processes in anoxic environments. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198789406.003.0011.

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During organic material degradation in oxic environments, electrons from organic material, the electron donor, are transferred to oxygen, the electron acceptor, during aerobic respiration. Other compounds, such as nitrate, iron, sulfate, and carbon dioxide, take the place of oxygen during anaerobic respiration in anoxic environments. The order in which these compounds are used by bacteria and archaea (only a few eukaryotes are capable of anaerobic respiration) is set by thermodynamics. However, concentrations and chemical state also determine the relative importance of electron acceptors in organic carbon oxidation. Oxygen is most important in the biosphere, while sulfate dominates in marine systems, and carbon dioxide in environments with low sulfate concentrations. Nitrate respiration is important in the nitrogen cycle but not in organic material degradation because of low nitrate concentrations. Organic material is degraded and oxidized by a complex consortium of organisms, the anaerobic food chain, in which the by-products from physiological types of organisms becomes the starting material of another. The consortium consists of biopolymer hydrolysis, fermentation, hydrogen gas production, and the reduction of either sulfate or carbon dioxide. The by-product of sulfate reduction, sulfide and other reduced sulfur compounds, is oxidized back eventually to sulfate by either non-phototrophic, chemolithotrophic organisms or by phototrophic microbes. The by-product of another main form of anaerobic respiration, carbon dioxide reduction, is methane, which is produced only by specific archaea. Methane is degraded aerobically by bacteria and anaerobically by some archaea, sometimes in a consortium with sulfate-reducing bacteria. Cultivation-independent approaches focusing on 16S rRNA genes and a methane-related gene (mcrA) have been instrumental in understanding these consortia because the microbes remain uncultivated to date. The chapter ends with some discussion about the few eukaryotes able to reproduce without oxygen. In addition to their ecological roles, anaerobic protists provide clues about the evolution of primitive eukaryotes.

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Echenique, Ignacio A., and Michael G. Ison. To Accept or Not To Accept? Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199938568.003.0026.

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These case studies illustrate infections encountered in hospitals among patients with compromised immune systems. As a result of immunocompromise, the patients are vulnerable to common and uncommon infections. These cases are carefully chosen to reflect the most frequently encountered infections in the patient population, with an emphasis on illustrations and lucid presentations to explain the state-of-the-art approaches in diagnosis and treatment. Common and uncommon presentations of infections are presented while the rare ones are not emphasized. The cases are written and edited by clinicians and experts in the field. Each of these cases highlight the immune dysfunction that uniquely predisposed the patient to the specific infection, and the cases deal with infections in the cancer patient, infections in the solid organ transplant recipient, infections in the stem cell recipient, infections in patients receiving immunosuppressive drugs, and infections in patients with immunocompromise that is caused by miscellaneous conditions.

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Strijbos, Sytse. Systems Thinking. Edited by Robert Frodeman. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780198733522.013.24.

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Systems thinking was launched by Ludwig von Bertalanffy and others in the 1950s as an interdisciplinary movement with a broad and bold scientific program. The movement attempts to overcome the dominating mechanistic world picture and related reductionism in the sciences which is regarded as one of the main causes of the problems of the modern world. This chapter discusses the sixty-year history of systems thinking and sketches some main lines of its three domains: systems science, systems approach in technology and management, and systems philosophy. This interdisciplinary movement has stimulated fruitful theory formation in the first mentioned domain, although it has not succeeded in achieving its original far-reaching goals. Furthermore, integrative, interdisciplinary systems approaches in technology and management have become well accepted. Finally, recent developments signal a return to the intellectual-spiritual roots of the systems movement aiming for a renewal of its scientific agenda.

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Частини книг з теми "Acceptor Systems"

King, Tsoo E., and Yan Xu. "QP-S — The Electron Acceptor of Succinate Dehydrogenase." In Cytochrome Systems, 503–8. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1941-2_70.

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Fischer, S. F., I. Nussbaum, and P. O. J. Scherer. "Electron Transfer in Rigidly Linked Donor-Acceptor Systems." In Antennas and Reaction Centers of Photosynthetic Bacteria, 256–63. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-82688-7_36.

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Hagen, S., H. Schier, S. Roth, and M. Hanack. "Langmuir-Blodgett Films from Donor-Acceptor Substituted Polyenes." In Lower-Dimensional Systems and Molecular Electronics, 531–36. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4899-2088-1_63.

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Fischer, S. F., and I. Nußbaum. "Electrontransfer and Vibrational Relaxation in Bridged Donor-Acceptor Systems." In Springer Proceedings in Physics, 270–73. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-47541-2_54.

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Doraiswamy, S., G. B. Maiya, N. Periasamy, and B. Venkataraman. "Electron Transfer Rates in Covalently Linked Donor-Acceptor Systems." In Ultrafast Phenomena VI, 568–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-83644-2_159.

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Joshi, Swati, Kavita Arora, and Obaid Siddiqi. "Cationic Acceptor Sites on the Labellar Chemosensory Neurons of Drosophila Melanogaster." In Neurobiology of Sensory Systems, 439–48. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4899-2519-0_30.

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Geppert, Dorothee, and Regina de Vivie-Riedle. "Control strategies for molecular switches in donor-bridge-acceptor systems." In Ultrafast Phenomena XV, 258–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-68781-8_83.

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Roshchina, Victoria V. "Acceptor Models of Secretions and Their Reactions on Exometabolites." In Model Systems to Study the Excretory Function of Higher Plants, 65–98. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-8786-4_3.

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Fukuzumi, Shunichi. "Photoinduced Electron-Transfer Functions of π-Electron Donor–Acceptor Supramolecular Complexes". У Chemical Science of π-Electron Systems, 529–43. Tokyo: Springer Japan, 2015. http://dx.doi.org/10.1007/978-4-431-55357-1_31.

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Schoeller, Wolfgang W. "Donor-Acceptor Complexes of Low-Coordinated Cationic π-Bonded Phosphorus Systems." In New Aspects in Phosphorus Chemistry III, 75–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/b11151.

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Тези доповідей конференцій з теми "Acceptor Systems"

Tykwinski, Rik R., Martin Schreiber, Rolf Spreiter, Christian Bosshard, Corinne Boudon, Jean-Paul Gisselbrecht, François Diederich, Peter Günter, and Maurice Gross. "Donor-Acceptor Systems Derived from Tetraethynylethene." In Organic Thin Films for Photonic Applications. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/otfa.1995.md.3.

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An increasing number of conjugated, organic molecules and polymers are finding application as materials for electronics and photonics due to their inherent synthetic flexibility, potential ease of processing and the possibility of tailoring material characteristics to suit a desired property.1 To more efficiently design organic materials to specific tasks, it is necessary to understand how and to what degree alteration of molecular electronic structure affects materials properties. Investigation of a comprehensive series of synthetically related molecules and the relationship between their electronic and physical properties is perhaps the best approach to the rational design of useful organic materials. Hence, we have synthesized a complete series of conjugated, electronically varied molecules based on a tetraethynylethene (TEE, 1) framework. Study of the optical and electrical properties of these electronically diverse building blocks will aid in tuning specific properties for the ultimate formation of functionalized polytriacetylenes (PTAs, 2).

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Ouitrakul, Sarinee, Mana Sriyudthsak, and Toshihide Kakizono. "Effect of Electron Acceptor in Bio-Fuel Cell." In 2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems. IEEE, 2006. http://dx.doi.org/10.1109/nems.2006.334782.

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Geppert, Dorothee, and Regina de Vivie-Riedle. "Control strategies for molecular switches in donor-bridge-acceptor systems." In International Conference on Ultrafast Phenomena. Washington, D.C.: OSA, 2006. http://dx.doi.org/10.1364/up.2006.tuc5.

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Rong, Zou, Chen Xiangxian, Tang Zhifeng, and Bian Jidong. "Design of Bill Acceptor for Automatic Fare Collecion of Rail Transit." In 2014 Enterprise Systems Conference (ES). IEEE, 2014. http://dx.doi.org/10.1109/es.2014.27.

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Akhtar, Mahmood, Eliathamby Ambikairajah, and Julien Epps. "A Hybrid Method for the Recognition of Acceptor Splice Sites." In 2006 13th IEEE International Conference on Electronics, Circuits and Systems. IEEE, 2006. http://dx.doi.org/10.1109/icecs.2006.379851.

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Gusenbauer, A. "Conjugated Polymeric Donor — Fullerene Type Acceptor Systems For Photoelectrochemical Energy Conversion." In ELECTRIC PROPERTIES OF SYNTHETIC NANOSTRUCTURES: XVII International Winterschool/Euroconference on Electronic Properties of Novel Materials. AIP, 2004. http://dx.doi.org/10.1063/1.1812148.

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Ahmed, Md Soif, Chinmoy Biswas, Dipanjan Banerjee, Botta Bhavani, S. Prasanthkumar, Lingamallu Giribabu, Venugopal Rao Soma, and Sai Santosh Kumar Raavi. "Ultrafast Photoexcited Molecular Dynamics of Metalated Porphyrin – Napthalimide Based Donor-Acceptor Systems." In CLEO: Applications and Technology. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_at.2022.jw3b.4.

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Ultrafast excited state molecular relaxation dynamics of two porphyrin-napthalimide molecular systems in donor–acceptor configuration, have been studied using femtosecond transient absorption measurements upon pumping the Soret bands of the porphyrins with 400 nm excitation.

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Xu, Zhi, Ying Dong, Christopher D. Spilling, Vasudevan Lakshminarayanan, and Sastry V. Pappu. "Intermolecular charge transfer in organic donor-acceptor systems for optical storage applications." In Lasers and Materials in Industry and Opto-Contact Workshop, edited by Roger A. Lessard. SPIE, 1998. http://dx.doi.org/10.1117/12.323488.

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Duoyuan, Wang, Hu Lingzhi, He Huizhu, Zhao Lizeng, Mi Xin, and Ni Yuxin. "The New Systems of Organic Photon-gated Photochemical Hole Burning." In Persistent Spectral Hole Burning: Science and Applications. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/pshb.1991.fe12.

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Recent material research has been devoted to search for two-color or photon-gated photochemical hole burning mechanisms in inorganic as well as organic materials. A mechanism for photon-gated spectral hole burning by donor-acceptor electron transfer in a material composed of meso-tetra-p-tolyl-tetrabenzoporphyrinato)zinc (TZT) (Donor) with halomethanes(acceptor) in poly(methylmethacrylate) (PMMA) thin film at 1.4K was reported by Carter et al.[1]

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Ermer, Susan, Doris S. Leung, Steven M. Lovejoy, John F. Valley, and Marc Stiller. "Photobleachable Donor-Acceptor-Donor Chromophores with Enhanced Thermal Stability." In Organic Thin Films for Photonic Applications. Washington, D.C.: Optica Publishing Group, 1993. http://dx.doi.org/10.1364/otfa.1993.wc.2.

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An important step in the realization of active optical interconnects is the development of poled electro-optic (EO) polymer materials stable to both manufacturing and end-use environments. These environments vary according to process and ultimate application, but many require longterm thermal stability to 125 °C and short excursions to 250 °C or higher.1 Our efforts with EO polymers have been directed toward thermally stable waveguide devices2 and polyimide-based guest-host material systems.3 We recently demonstrated a proof-of-principle all-polyimide triple stack Mach-Zehnder based on DCM (4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran) as the active chromophore in the core waveguide layer.4 The structure of DCM is shown in Figure 1(a). Advantages of DCM include low absorbance at device wavelengths, photobleachability, compatibility with polyimides and their polyamic acid precursors, and commercial ability at high purity. DCM is less than optimum in its thermal characteristics, however. It out-diffuses when heated above 220 °C for significant periods of time and it plasticizes the host material. This plasticization depresses the glass transition temperature Tg, and is detrimental to long-term stability of the poled state.

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Звіти організацій з теми "Acceptor Systems"

Elliott, C. M. Photoinduced charge separation in linked donor-chromophore-acceptor systems. Office of Scientific and Technical Information (OSTI), June 1993. http://dx.doi.org/10.2172/6567912.

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Lewis, Frederick D. Light-Driven Charge Transfer in Face-to-Face Donor-Spacer-Acceptor Supramolecular Systems. Office of Scientific and Technical Information (OSTI), March 2019. http://dx.doi.org/10.2172/1499131.

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Elliott, C. M. Photoinduced charge separation in linked donor-chromophore-acceptor systems. Progress report, September 1, 1993--May 31, 1993. Office of Scientific and Technical Information (OSTI), June 1993. http://dx.doi.org/10.2172/10156289.

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Van Rijn, Jaap, Harold Schreier, and Yossi Tal. Anaerobic ammonia oxidation as a novel approach for water treatment in marine and freshwater aquaculture recirculating systems. United States Department of Agriculture, December 2006. http://dx.doi.org/10.32747/2006.7696511.bard.

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Ammonia waste removal in recirculating aquaculture systems is typically accomplished via the action of nitrifying bacteria in specially designed biofilters that oxidize ammonia to produce nitrate. In the majority of these systems nitrate is discharged to the environment through frequent water exchanges. As environmental considerations have made it necessary to eliminate nitrate release, new strategies for nitrate consumption are being developed. In the funding period we showed that ammonia removal from wastewater could take place by an anaerobic ammonia oxidation process carried out by bacterial Planctomycetessp. Referred to as “anammox”, this process occurs in the absence of an organic source and in the presence of nitrite (or nitrate) as an electron acceptor as follows: NH₃ + HNO₂ -> N₂ + 2H₂O. Annamox has been estimated to result in savings of up to 90% of the costs associated with was wastewater treatment plants. Our objective was to study the applicability of the anammox process in a variety of recirculating aquaculture systems to determine optimal conditions necessary for efficient ammonia waste removal. Both seawater and freshwater systems operated with either conventional aerobic treatment of ammonia to nitrate (USA) or, in addition, denitrifying biofilters as well as anaerobic digestion of sludge (Israel) were tested. Molecular tools were used to screen and monitor different treatment compartments for the presence of Planctomycetes. Optimal conditions for the enrichment of the anammox bacteria were tested using laboratory scale biofilters as well as a semi-commercial system. Enrichment studies resulted in the isolation of some unique heterotrophic bacteria capable of plasmid-mediated autotrophic growth in the presence of ammonia and nitrite. Our studies have not only demonstrated the presence and viability of Planctomycetes spp. in recirculating marine and freshwater systems biofilter units but also demonstrated the applicability of the anammox process in these systems. Using our results we have developed treatment schemes that have allowed for optimizing the anammox process and applying it to recirculating systems.

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Brosh, Arieh, Gordon Carstens, Kristen Johnson, Ariel Shabtay, Joshuah Miron, Yoav Aharoni, Luis Tedeschi, and Ilan Halachmi. Enhancing Sustainability of Cattle Production Systems through Discovery of Biomarkers for Feed Efficiency. United States Department of Agriculture, July 2011. http://dx.doi.org/10.32747/2011.7592644.bard.

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Feed inputs represent the largest variable cost of producing meat and milk from ruminant animals. Thus, strategies that improve the efficiency of feed utilization are needed to improve the global competitiveness of Israeli and U.S. cattle industries, and mitigate their environmental impact through reductions in nutrient excretions and greenhouse gas emissions. Implementation of innovative technologies that will enhance genetic merit for feed efficiency is arguably one of the most cost-effective strategies to meet future demands for animal-protein foods in an environmentally sustainable manner. While considerable genetic variation in feed efficiency exist within cattle populations, the expense of measuring individual-animal feed intake has precluded implementation of selection programs that target this trait. Residual feed intake (RFI) is a trait that quantifies between-animal variation in feed intake beyond that expected to meet energy requirements for maintenance and production, with efficient animals being those that eat less than expected for a given size and level of production. There remains a critical need to understand the biological drivers for genetic variation in RFI to facilitate development of effective selection programs in the future. Therefore, the aim of this project was to determine the biological basis for phenotypic variation in RFI of growing and lactating cattle, and discover metabolic biomarkers of RFI for early and more cost-effective selection of cattle for feed efficiency. Objectives were to: (1) Characterize the phenotypic relationships between RFI and production traits (growth or lactation), (2) Quantify inter-animal variation in residual HP, (3) Determine if divergent RFIphenotypes differ in HP, residual HP, recovered energy and digestibility, and (4) Determine if divergent RFI phenotypes differ in physical activity, feeding behavior traits, serum hormones and metabolites and hepatic mitochondrial traits. The major research findings from this project to date include: In lactating dairy cattle, substantial phenotypic variation in RFI was demonstrated as cows classified as having low RMEI consumed 17% less MEI than high-RMEI cows despite having similar body size and lactation productivity. Further, between-animal variation in RMEI was found to moderately associated with differences in RHP demonstrating that maintenance energy requirements contribute to observed differences in RFI. Quantifying energetic efficiency of dairy cows using RHP revealed that substantial changes occur as week of lactation advances—thus it will be critical to measure RMEI at a standardized stage of lactation. Finally, to determine RMEI in lactating dairy cows, individual DMI and production data should be collected for a minimum of 6 wk. We demonstrated that a favorably association exists between RFI in growing heifers and efficiency of forage utilization in pregnant cows. Therefore, results indicate that female progeny from parents selected for low RFI during postweaning development will also be efficient as mature females, which has positive implications for both dairy and beef cattle industries. Results from the beef cattle studies further extend our knowledge regarding the biological drivers of phenotypic variation in RFI of growing animals, and demonstrate that significant differences in feeding behavioral patterns, digestibility and heart rate exist between animals with divergent RFI. Feeding behavior traits may be an effective biomarker trait for RFI in beef and dairy cattle. There are differences in mitochondrial acceptor control and respiratory control ratios between calves with divergent RFI suggesting that variation in mitochondrial metabolism may be visible at the genome level. Multiple genes associated with mitochondrial energy processes are altered by RFI phenotype and some of these genes are associated with mitochondrial energy expenditure and major cellular pathways involved in regulation of immune responses and energy metabolism.

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Swanson, Marianne, and Barbara Guttman. Generally accepted principles and practices for securing information technology systems. Gaithersburg, MD: National Institute of Standards and Technology, 1996. http://dx.doi.org/10.6028/nist.sp.800-14.

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Shackelford, Douglas, Joel Slemrod, and James Sallee. A Unifying Model of How the Tax System and Generally Accepted Accounting Principles Affect Corporate Behavior. Cambridge, MA: National Bureau of Economic Research, January 2007. http://dx.doi.org/10.3386/w12873.

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SHUFORD, D. H. COMPARISON OF PROPOSED BARCT DESIGN FOR THE SUPPLEMENTAL TREATMENT DEMONSTRACTION BULK VITRIFICATION SYSTEM (DBVS) WITH BARCT DESIGN ACCEPTED FOR WTP. Office of Scientific and Technical Information (OSTI), September 2004. http://dx.doi.org/10.2172/832838.

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Saptsin, Vladimir, and Володимир Миколайович Соловйов. Relativistic quantum econophysics – new paradigms in complex systems modelling. [б.в.], July 2009. http://dx.doi.org/10.31812/0564/1134.

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This work deals with the new, relativistic direction in quantum econophysics, within the bounds of which a change of the classical paradigms in mathematical modelling of socio-economic system is oﬀered. Classical physics proceeds from the hypothesis that immediate values of all the physical quantities, characterizing system’s state, exist and can be accurately measured in principle. Non-relativistic quantum mechanics does not reject the existence of the immediate values of the classical physical quantities, nevertheless not each of them can be simultaneously measured (the uncertainty principle). Relativistic quantum mechanics rejects the existence of the immediate values of any physical quantity in principle, and consequently the notion of the system state, including the notion of the wave function, which becomes rigorously nondeﬁnable. The task of this work consists in econophysical analysis of the conceptual fundamentals and mathematical apparatus of the classical physics, relativity theory, non-relativistic and relativistic quantum mechanics, subject to the historical, psychological and philosophical aspects and modern state of the socio-economic modeling problem. We have shown that actually and, virtually, a long time ago, new paradigms of modeling were accepted in the quantum theory, within the bounds of which the notion of the physical quantity operator becomes the primary fundamental conception(operator is a mathematical image of the procedure, the action), description of the system dynamics becomes discrete and approximate in its essence, prediction of the future, even in the rough, is actually impossible when setting aside the aftereﬀect i.e. the memory. In consideration of the analysis conducted in the work we suggest new paradigms of the economical-mathematical modeling.

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Chapman, Ray, Phu Luong, Sung-Chan Kim, and Earl Hayter. Development of a three-dimensional vegetative loss mechanism for the Geophysical Scale Transport Multi-Block Hydrodynamic Sediment and Water Quality Transport Modeling System (GSMB). Engineer Research and Development Center (U.S.), August 2022. http://dx.doi.org/10.21079/11681/45041.

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The US Army Engineer Research and Development Center’s (ERDC) Environmental Laboratory (EL) and Coastal and Hydraulics Laboratory (CHL) have completed several large scale hydrodynamic, sediment and water quality transport studies. These studies have been successfully executed utilizing the Geophysical Scale Transport Modeling System (GSMB), which is composed of multiple process models (Figure 1). Due to being directly and indirectly linked within the GSMB framework, the US Army Corps of Engineers (USACE) accepted wave, hydrodynamic, sediment, and water quality transport models are both directly and indirectly linked within the GSMB framework.

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