Gotowe bibliografie tematyczne / Perylene

Gotowa bibliografia na temat „Perylene”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 25 maja 2024

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Artykuły w czasopismach na temat "Perylene"

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Lentijo, S., J. E. Expósito, G. Aullón, J. A. Miguel i P. Espinet. "Highly fluorescent complexes with 3-isocyanoperylene and N-(2,5-di-tert-butylphenyl)-9-isocyano-perylene-3,4-dicarboximide". Dalton Trans. 43, nr 28 (2014): 10885–97. http://dx.doi.org/10.1039/c4dt01016g.

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Loewe, Robert S., Kin-ya Tomizaki, Fabien Chevalier i Jonathan S. Lindsey. "Synthesis of perylene-porphyrin dyads for light-harvesting studies". Journal of Porphyrins and Phthalocyanines 06, nr 10 (październik 2002): 626–42. http://dx.doi.org/10.1142/s1088424602000774.

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The spectral coverage of porphyrin-based light-harvesting arrays can be enhanced through the use of suitable accessory pigments. Perylene-monoimide dyes can serve as valuable accessory pigments with porphyrins. To investigate the choice of perylene-monoimide and the effects of molecular architecture on light-harvesting efficacy, five perylene-porphyrin dyads were prepared. Each dyad employs a diphenylethyne linker that bridges the perylene N-imide site and the porphyrin meso-position. Three dyads incorporate a mono-phenoxy perylene at the o-, m-, or p-position of the meso-aryl group on the porphyrin. The two remaining dyads incorporate a perylene-monoimide (bearing zero or three phenoxy substituents) at the p-position of the meso-aryl group on the porphyrin. The introduction of phenoxy groups on the perylenes increases the solubility, a key requirement for use in light-harvesting arrays. The long-wavelength absorption band of the perylene shifts from 506 nm to 532 or 533 nm upon substitution with one or three phenoxy groups, respectively. The synthesis of the dyads entails Pd -mediated coupling of a bromo-perylene and an ethynyl porphyrin, or the mixed-aldehyde condensation with a perylene-aldehyde, mesitaldehyde, and pyrrole. Five perylene-monoimide dyes bearing an ethyne or bromo substituent at the p-position of the N-aryl unit were developed for this modular chemistry. Each perylene-porphyrin dyad exhibits efficient energy transfer from the excited perylene to the ground-state porphyrin.
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Mauri, Luca, Alessia Colombo, Claudia Dragonetti, Francesco Fagnani i Dominique Roberto. "Iridium and Ruthenium Complexes Bearing Perylene Ligands". Molecules 27, nr 22 (16.11.2022): 7928. http://dx.doi.org/10.3390/molecules27227928.

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The present review summarizes the work carried out mostly in the last decade on iridium and ruthenium complexes bearing various perylene ligands, of particular interest for bioimaging, photodynamic therapy, and solar energy conversion. In these complexes, the absorption spectra and the electrochemical properties are those of the perylene subunit plus those of the metal moiety. In contrast, the emissions are completely changed with respect to perylenes considered alone. Thus, fully organic perylenes are characterized by a strong fluorescence in the visible region, lifetimes of a few nanoseconds, and luminescence quantum yields approaching 100%, whereas perylene Ir and Ru complexes usually do not emit; however, in few cases, weak phosphorescent emissions, with lifetimes in the range of microseconds and relatively low quantum yields, are reported. This is due to a strong interaction between the perylene core and the heavy metal center, taking place after the excitation. Nevertheless, an important advantage deriving from the presence of the heavy metal center is represented by the ability to generate large amounts of singlet oxygen, which plays a key role in photodynamic therapy.
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Nakano, Masahiro, Kyohei Nakano, Kazuo Takimiya i Keisuke Tajima. "Two isomeric perylenothiophene diimides: physicochemical properties and applications in organic semiconducting devices". Journal of Materials Chemistry C 7, nr 8 (2019): 2267–75. http://dx.doi.org/10.1039/c8tc05577g.

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Two thiophene-fused perylene-3,4,9,10-tetracarboxy diimides, peryleno[2,1-b]thiophene diimide (PTIa) and peryleno[1,2-b]thiophene diimide (PTIb), were synthesized as electron-deficient building units for electronic and optoelectronic materials.
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Gutman, Ivan, Boris Furtula, Jelena Djurdjevic, Rradmila Kovacevic i Sonja Stankovic. "Annelated perylenes: Benzenoid molecules violating the Kekulé-structure-based cyclic conjugation models". Journal of the Serbian Chemical Society 70, nr 8-9 (2005): 1023–32. http://dx.doi.org/10.2298/jsc0509023g.

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Several currently used models for assessing the extent of cyclic conjugation in benzenoid hydrocarbons, all based on Kekul?-type structural formulas predict that there is no cyclic conjugation in the central, "empty", ring of perylene and its annelated derivatives. In this paper it is shown that in some annelated perylenes the cyclic conjugation in the "empty" ring (measured by its energy-effect) may be unexpectedly high. Therefore, in the case of these annelated perylenes, the Kekul?- structure-based models fail. The cause for such an "anomalous" behavior of annelated perylenes is discussed.
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Duncan, Katelyn M., Donald L. Kellis, Jonathan S. Huff, Matthew S. Barclay, Jeunghoon Lee, Daniel B. Turner, Paul H. Davis, Bernard Yurke, William B. Knowlton i Ryan D. Pensack. "Symmetry Breaking Charge Transfer in DNA-Templated Perylene Dimer Aggregates". Molecules 27, nr 19 (5.10.2022): 6612. http://dx.doi.org/10.3390/molecules27196612.

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Molecular aggregates are of interest to a broad range of fields including light harvesting, organic optoelectronics, and nanoscale computing. In molecular aggregates, nonradiative decay pathways may emerge that were not present in the constituent molecules. Such nonradiative decay pathways may include singlet fission, excimer relaxation, and symmetry-breaking charge transfer. Singlet fission, sometimes referred to as excitation multiplication, is of great interest to the fields of energy conversion and quantum information. For example, endothermic singlet fission, which avoids energy loss, has been observed in covalently bound, linear perylene trimers and tetramers. In this work, the electronic structure and excited-state dynamics of dimers of a perylene derivative templated using DNA were investigated. Specifically, DNA Holliday junctions were used to template the aggregation of two perylene molecules covalently linked to a modified uracil nucleobase through an ethynyl group. The perylenes were templated in the form of monomer, transverse dimer, and adjacent dimer configurations. The electronic structure of the perylene monomers and dimers were characterized via steady-state absorption and fluorescence spectroscopy. Initial insights into their excited-state dynamics were gleaned from relative fluorescence intensity measurements, which indicated that a new nonradiative decay pathway emerges in the dimers. Femtosecond visible transient absorption spectroscopy was subsequently used to elucidate the excited-state dynamics. A new excited-state absorption feature grows in on the tens of picosecond timescale in the dimers, which is attributed to the formation of perylene anions and cations resulting from symmetry-breaking charge transfer. Given the close proximity required for symmetry-breaking charge transfer, the results shed promising light on the prospect of singlet fission in DNA-templated molecular aggregates.
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Fang, Xiangdong. "BN-Embedded Perylenes". Molecules 26, nr 23 (25.11.2021): 7148. http://dx.doi.org/10.3390/molecules26237148.

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Transition metal catalyzed coupling reaction strategy has been utilized in the synthesis of two novel BN-perylenes starting from halogenated BN-naphthalene derivatives. The molecular structures and packing modes of BN-perylenes were confirmed by NMR spectroscopy and X-ray single-crystal diffraction experiments. Their photophysical properties were further investigated using UV-vis and fluorescence spectroscopy and DFT calculations. Interestingly, the isosteric BN-insertion in perylene system resulted in stronger π-π stacking interaction both in solid and solution phases. The synthesized BN-perylenes are proved to be highly stable and thus provide a new valuable platform for novel organic materials applications which is otherwise inaccessible to date.
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Liu, Yu, Han Zhong, Yu Qin, Yan Zhang, Xinfeng Liu i Tao Zhang. "Non-covalent hydrophilization of reduced graphene oxide used as a paclitaxel vehicle". RSC Advances 6, nr 36 (2016): 30184–93. http://dx.doi.org/10.1039/c6ra04349f.

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Phosphorylcholine oligomer grafted perylene (Perylene-PCn) was synthesized. By π–π stacking interaction of reduced graphene oxide (RGO) and perylene moiety, water dispersible RGO/Perylene-PCn composites were prepared and used as paclitaxel vehicle.
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Nagasawa, Yuya, Takeshi Koyama i Susumu Okada. "Energetics and electronic structures of perylene confined in carbon nanotubes". Royal Society Open Science 5, nr 6 (czerwiec 2018): 180359. http://dx.doi.org/10.1098/rsos.180359.

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The energetics and geometries of perylene encapsulated in carbon nanotubes (CNTs) have been investigated employing density functional theory using the generalized gradient approximation combined with the van der Waals correction. Our calculations show that the encapsulated perylene molecules possess two metastable molecular conformations with respect to the CNT wall, which are almost degenerate with each other. A standing conformation, with respect to the CNT wall, is the ground state conformation for a semiconducting (19,0)CNT, while a lying conformation is the ground state for a metallic (11,11)CNT. Cooperation and competition between perylene–perylene and perylene–CNT interactions cause these possible perylene conformations inside CNTs. However, the electronic structure of the CNT encapsulating the perylene molecules is found to be insensitive to the molecular conformation.
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Cremer, Jens, i Peter Bäuerle. "Perylene-Oligothiophene-Perylene Triads for Photovoltaic Applications". European Journal of Organic Chemistry 2005, nr 17 (wrzesień 2005): 3715–23. http://dx.doi.org/10.1002/ejoc.200500147.

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Rozprawy doktorskie na temat "Perylene"

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Haddow, Sarah Louise. "Perylene derivatives and silicon nanosheets". Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/41873/.

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The work presented in this thesis explores two different topics of interest, firstly a synthetic project fabricating small building blocks for supramolecular arrays. The building blocks are a series of perylene monoimide monoahydride (PMIA) compounds, synthesised by a four step process. The PMIA compounds belong to a family of dyes called the rylenes which are known in literature for their optical properties and use in optoelectronic devices. Chapter 2 begins with the description of the synthesis and characterisation of these molecules, where Hirshfeld surface analysis is used to investigate the solid state intermolecular forces between adjacent molecules. This is followed by the details of connecting two PMIA through organic linkers and it explores the structural and physical properties of the so called dimer. The physical properties investigated include, optical and electronic properties utilizing spectroelectrochemistry, cyclic voltammetry and electron paramagnetic resonance techniques. The chapter also explores the asymmetric feature of the building blocks with the aid of X-ray crystallography. The second topic of interest is silicon nanosheets (SiNS). There are many types of these two dimensional (2D) materials published in literature, however one type which has had minimal attention is a buckled sheet structure known as layered polysilane. A synthetic and structural investigation into layered polysilane and closely related siloxene, are carried out in Chapter 3, identifying their bonding arrangement and topographic assembly through a range of analytical techniques. Like many other SiNS, it is proposed that this material can be used in nanotechnology devices in the future, and this thesis makes some way towards identifying the structure which is important in order to use them in such devices. Chapter 4 leads on to discuss the investigation into the modification of SiNS fabricated in Chapter 3, via a range of small organic molecules. This is another area in literature which has great scope for investigation and exciting potential for use in nanodevices. An important difference once the SiNS have been functionalised with small organic groups is their enhanced solubility, in comparison to being insoluble before functionalisation. This opens up a wealth of applications which require solution phase activity. A range of surface analytical techniques aid in identification of functionalised sheets and Chapter 4 details the challenges and successes.
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Ferraro, Luca. "Physisorption of perylene dyes on graphite​". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13851/.

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This thesis work was carried out at CNR of Bologna. CNR- ISOF (Institute of Organic Synthesis and Photoreactivity) in the group of Dr. Vincenzo Palermo. The aim of this thesis was to perform a comparative and quantitative study on the interaction of three different PDI (perylene diimide) dyes with graphene (G) sheets in solution, using a phenomena called “dye’s capturing”. The only difference between the PDI dyes tested was the terminal atom in the side groups. In particular, we used a perylene core with side ethyl-phenyl group exposing in the para position a hydrogen (PDI-H), fluorine (PDI-F), or chlorine atom (PDI-Cl). Although the relative simplicity of the process and the measurement itself, the preparation of a reliable experimental setup is not trivial and several issues had to be taken into account. The main challenges to be overcame were related to the effective stability and reliability of the chemical systems, such as dyes, solution and graphite during the entire exposure time. For this reasons the work addressed the following issues: 1)Studying the interaction of small organic molecules and graphite flakes, using commercial products. 2)Finding the best conditions for the dye capturing process (concentration, stabilization of the solution, solvent etc.).3)Understanding of the “dye’s capturing” phenomena by UV-VIS and fluorescence techniques. 4)Stabilizing a relationship between the chemical structure of PDI-X (with side chains symmetrically terminated with a different atom) and the interaction with graphite, taking into account adsorption speed, packing, etc. 5)After testing the samples, the reported results were used to: 1) Determinate the best suitable molecule for the dye capturing process, and optimize a hypothetical industrial process by calculating the surface area for each molecule. 6)Morphology and structural characterizations with different technique like: AFM, SEM, EDX, XRD, fluorescence microscopy, TGA/DSC, IR.
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Lu, Weiya Douglas. "Photophysical consequences from interactions of glutathione S-transferases with the photodynamic sensitizer hypericin /". Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/8638.

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Llewellyn, Ben. "Synthesis and characterisation of functionalised perylene diimides". Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/35539/.

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This thesis describes the synthesis of three series of perylene diimides (PDIs) by functionalisation at all four possible regions of the molecule. The synthesised compounds were then probed by optical, electrochemical and photophysical methods in order to fully elucidate their properties. Chapter 1 gives an overview of the structure, synthesis, properties and applications of PDIs and introduces the main topics investigated in this thesis. Chapter 2 describes the synthesis of two of the first examples of PDIs with an absorption maximum in the near infrared. This was achieved by functionalisation of the bay area with a secondary amine followed by thionation of the imide carbonyls. One of the synthesised PDIs displays a highly unusual black colour, demonstrating absorption of light across an impressive range of the sun’s emission spectrum, suggesting excellent potential for incorporation into light harvesting devices. Chapter 3 details the synthesis of seven multichromophoric systems composed of PDIs and boron dipyrromethenes (BODIPYs). The number and position of the BODIPYs is varied along with the structure of the BODIPYs themselves by addition of methyl- and catecholate groups. The absorption and emission properties of the systems were investigated in order to elucidate any energy or electron transfer processes occurring. Energy transfer results in fluorescence solely from the PDI chromophore, rather than the BODIPY, whilst electron transfer was found to quench emission. Communication across the core of the PDI was observed between the BODIPY moieties, shown by cyclic voltammetry, whilst spectroelectrochemical methods demonstrated the effects of oxidation and reduction upon the absorption of the molecules. Chapter 4 reports on the synthesis of a pair of PDIs symmetrically and asymmetrically substituted with a platinum acetylide complex. Transient absorption spectroscopy and singlet oxygen generation measurements confirmed the formation of the triplet excited state of the PDI, due to the ‘heavy atom’ effect, induced by the presence of the platinum complex covalently bound to the PDI.
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Maivaldová, Iva. "Interakce fosfolipidů s polyelektrolyty ve vodném prostředí". Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2010. http://www.nusl.cz/ntk/nusl-216675.

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This diploma thesis is focused on determination of aggregation behavior of selected phospholipids (lecithin; 1,2-dipalmitoyl-sn-glycerol-3-phosphocholine) in water and on the effect of native hyaluronan addition of various molecular weights and concentrations on this behavior. The behavior has been investigated with fluorescence spectroscopy using pyrene and perylene as fluorescence probes being able to penetrate into hydrophobic cavities of formed aggregates. Critical aggregation concentration and the concentration at which lecithin begins to aggregate have been determined. Regarding 1,2-dipalmitoyl-sn-glycerol-3-phosphocholine, it was possible to determine only the beginning of aggregation value. The values of this parameter for lecithin and for 1,2-dipalmitoyl-sn-glycerol-3-phosphocholine correspond in the order. It has been investigated, that the addition of native hyaluronan has only in some systems slight effect on the aggregate behavior of selected phospholipids.
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Shaller, Andrew Douglas. "Synthesis and investigation of architecturally diverse supramolecular nanostructures related to dynamic self-assembly, folding, and energy transfer". Pullman, Wash. : Washington State University, 2009. http://www.dissertations.wsu.edu/Dissertations/Fall2009/A_Shaller_093009.pdf.

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Sykora, Benedikt Reinhold. "Influence of emitter orientation in perylene based OLEDs". Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11828.

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Mestrado em Ciência e Engenharia de Materiais
Os díodos orgânicos emissores de luz (organic light-emitting diodes ou OLEDs) têm como elemento funcional um filme fino de um semicondutor orgânico para a criação de excitões (pares electrão-lacuna), que emitem luz quando relaxam. O objetivo desta dissertação de mestrado é investigar o efeito da orientação dipolar de filmes baseados em perilenos de tetraphenyldibenzoperiflanthene (DBP) e diindenoperylene ( DIP), e das mesmas moléculas dispersas numa ma matriz de 5,6,11,12- tetraphenylnaphthacene (rubreno). O estudo tenta identificar uma possível relação entre o comportamento destes filmes e a eficiência do respetivo OLED. Observa-se que os filmes de DBP são amorfos, apresentam uma superfície lisa e absorvem mais luz do que os filmes de DIP, que se caracterizam por uma estrutura cristalina e uma superfície irregular. Os resultados combinados de simulações e de medições de fotoluminescência com dependência angular revelam que as moléculas de DBP apresentam orientação horizontal, estando as moléculas de DIP orientadas verticalmente. Este facto pode explicar o acoplamento mais forte das moléculas de DIP aos plasmões de superfície, em comparação com o DBP. As características gerais dos filmes de DBP ou DIP mantêm-se mesmo quando estes são depositados nos substratos de N, N '-di(1-naftil-N,N-difenil-(1,1'- bifenil)-4,4' –diamina utilizados ma preparação dos OLEDs, o que permite a comparação direta entre as duas configurações. Os resultados obtidos com os OLEDs baseados em filmes puros de DBP ou DIP apresentam valores de eficiência quântica externa (EQE) da ordem de 0,2 e 0,04 %, respetivamente. Estes valores baixos podem explicar-se pela orientação vertical dos dipolos do DIP, conduzindo a um fator de emissão de 27% (light outcoupling), claramente superior ao obtido com o OLED baseado no DBP (16%). Estas diferenças acentuam-se quando na comparação destes filmes com o comportamento dos filmes rubreno equivalentes dopados com 1% de DBP e DIP. Se por um lado não se observa nenhuma orientação dipolar preferencial no caso do DIP, as moléculas de DBP na matriz de rubreno estão quase na sua totalidade orientadas horizontalmente, o que aumenta o factor de emissão. A forte orientação preferencial no caso do DBP pode igualmente justificar o aumento de EQE de 0,2 % e 0,04% nos OLEDs com os filmes puros de DBP e DIP, para 3% e 0,5% no caso dos OLEDs com os filmes dopados. O aumento da eficiência pode também dever-se ao aumento da transferência energética da matriz de rubreno para os centros emissores. O forte efeito da orientação horizontal do emissor na eficiência dos OLEDs manifesta-se igualmente no notável aumento do factor de emissão de luz observado entre os filmes de DBP (fortemente orientados) e DIP (pouco orientados), que é de cerca de 70% no caso das camadas de emissão baseadas nos filmes puros, e de 44 % no caso dos filmes dopados.
Organic light-emitting diodes (OLEDs) contain thin films of organic semiconductors to create excitons (electron-hole-pairs), which will emit light if they de-excite. The aim of this master thesis is to investigate a possible link between the dipole orientation of perylene based films of tetraphenyldibenzoperiflanthene (DBP) and diindenoperylene (DIP), and of the same molecules dispersed in a 5,6,11,12-tetraphenylnaphthacene matrix. The study also compares the behavior of these films with that of the corresponding OLEDs. It is shown that DBP neat films are essentially amorphous, with a rather smooth surface and they absorb more light than the DIP films, which are crystalline and have a rough surface. Simulation results and angle-dependent p-polarised photoluminescence measurements reveal that the DBP molecules have a horizontal orientation, while the DIP molecules are vertically oriented. This explains the stronger coupling of DIP molecules to the surface plasmons, when compared to the DBP molecules. The general characteristics of the DBP or DIP films do not change when these are deposited onto N,N’-di(1-naphtyl-N,N’-diphenyl-(1,1’-biphenyl)-4,4’diamine hole transport layers used as substrates in OLEDs, thus allowing a direct comparison between both configurations. The OLEDs comprising neat films of DBP or DIP have small external quantum efficiency (EQE) values of 0.2 and 0.04%, respectively. This is probably due to the strong vertical molecular orientation of the DBP, leading to a high lightoutcoupling factor of 27%, when compared to 16% of the DIP OLED. These differences are accentuated when comparing the behavior of the neat films with equivalent rubrene films doped with 1% of DBP or DIP. While the DIP exhibits a rather isotropic orientation, the DBP molecules are fully horizontal within the doped film, thus improving the light-outcoupling. This may partly justify the increase of EQE from 0.2% and 0.04% of the neat film OLEDs to 3% and 0.5% for the doped DBP and DIP OLEDs, respectively. The improvement of the efficiency may also be due to the enhancement of the energy transfer from the rubrene matrix to the emitter dyes. The horizontal orientation of the emitter has a huge effect on the efficiency of perylene-based OLEDs, apparent also on the remarkable increase of the lightoutcoupling of strongly oriented DBP dipoles in comparison to the weakly oriented DIP, which is of the order of 70% in the case of the neat emission layers, and of 44% in the case of the doped counterparts.
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Engel, Egbert Konstantin. "Ultrafast exciton relaxation in quasi-one-dimensional perylene derivatives". [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=97940665X.

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Li, Xueqing. "Hydrogen Bond-directed Self-assembly of Perylene Bisimide Organogelators". kostenfrei, 2009. http://nbn-resolving.de/urn/resolver.pl?urn=nbn:de:bvb:20-opus-43727.

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Engel, Egbert. "Ultrafast exciton relaxation in quasi-one-dimensional perylene derivatives". Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2006. http://nbn-resolving.de/urn:nbn:de:swb:14-1143653858595-30675.

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This thesis deals with exciton relaxation processes in thin polycrystalline films and matrix-isolated molecules of the perylene derivatives PTCDA (3,4,9,10-perylenetetracarboxylic dianhydride) and MePTCDI (N,N'-dimethylperylene-3,4,9,10-dicarboximide). Using femtosecond pump-probe spectroscopy, transient absorption spectra, excitonic relaxation in the lowest excited state subsequent to excitation, and exciton-exciton interaction and annihilation at high excitation densities have been addressed. Transient absorption spectroscopy in the range 1.2eV-2.6eV has been applied to thin polycrystalline films of PTCDA and MePTCDI and to solid solutions of PTCDA and MePTCDI molecules (monomers) in a SiO2 matrix. We are able to ascribe the respective signal contributions to ground state bleaching, stimulated emission, and excited state absorption. Both systems exhibit broad excited-state absorption features below 2.0eV, with dominant peaks between 1.8eV and 2.0eV. The monomer spectra can be consistently explained by the results of quantum-chemical calculations on single molecules, and the respective experimental polarization anisotropies for the two major transitions agree with the calculated polarizations. Dimer calculations allow to qualitatively understand the trends visible in the experimental results from monomers to thin films. The broad excited state absorption band between 1.8eV and 2.0eV allows to probe the population dynamics in the first excited state of thin films. We show that excitons created at the Gamma point relax towards the border of the Brillouin zone on a 100fs time scale in both systems. Excitonic relaxation is accelerated by increase of temperature and/or excitation density, which is attributed to stimulated phonon emission during relaxation in k-space. Lower and upper limits of the intraband relaxation time constants are 25fs (resolution limit) and 250fs (100fs) for PTCDA (MePTCDI). These values agree with the upper limit for the intraband relaxation time of 10ps, evaluated from time-resolved luminescence measurements. While the luminescence anisotropy is in full accordance with the predictions made by a luminescence anisotropy model being consistent with the exciton model of Davydov-split states, the pump-probe anisotropy calls for an explanation beyond the models presently available. At excitation densities 10^(19)cm^(-3), the major de-excitation mechanism for the relaxed excitons is exciton-exciton annihilation, resulting in a strongly reduced exciton life time. Three different models for the microscopic behavior have been tested: a diffusion-limited annihilation model in both three and one dimensions (with diffusion constant D as fit parameter) as well as a long-range single-step Förster-type annihilation model (with Förster radius RF as fit parameter). For PTCDA, the latter two, being structurally equivalent, allow to fit a set of multiexponential decay curves for multiple initial exciton densities with high precision. In contrast, the three-dimensional diffusion-limited model is clearly inferior. For all three models, we extract annihilation rates, diffusion constants and diffusion lengths (or Förster radii), for both room and liquid helium temperature. Temperature dependence and orders of magnitude of the obtained parameters D or RF correspond to the expectations. For MePTCDI, the 1D and the Förster model are in good agreement for a smaller interval of excitation densities. For a initial exciton densities higher than 5 x 10^(19)cm^(-3), the 3D model performs significantly better than the other two.
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Książki na temat "Perylene"

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Wilhoit, R. C. 1- and 2-methylnaphthalene and dibenzanthracenes. Washington, D.C. (1220 L St., N.W., Washington 20005): American Petroleum Institute, 1985.

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Milton, Margarita. Perylene Diimide: A Versatile Building Block for Complex Molecular Architectures and a Stable Charge Storage Material. [New York, N.Y.?]: [publisher not identified], 2018.

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Foegen, Neil. Investigations into the Optical and Electronic Properties of Perylene Diimide-Based Organic Materials as a Function of Molecular Aggregation in Solution and in Thin Films. [New York, N.Y.?]: [publisher not identified], 2021.

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Części książek na temat "Perylene"

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Gooch, Jan W. "Perylene Pigments". W Encyclopedic Dictionary of Polymers, 528. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_8599.

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Schmidt, Cordula D., i Andreas Hirsch. "Water-Soluble Perylene Dyes". W Ideas in Chemistry and Molecular Sciences, 283–304. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527630554.ch13.

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Winkelmann, Jochen. "Self-diffusion coefficient of perylene". W Diffusion in Gases, Liquids and Electrolytes, 435. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-540-73735-3_265.

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Hiramoto, Masahiro. "Avalanche Multiplication in Perylene Molecular Crystals". W Electronic Materials: Science & Technology, 163–73. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1237-7_10.

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Winkelmann, Jochen. "Diffusion coefficient of perylene in methyl-cyclohexane". W Diffusion in Gases, Liquids and Electrolytes, 1161. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-540-73735-3_937.

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Winkelmann, Jochen. "Diffusion coefficient of perylene in butyl-cyclohexane". W Diffusion in Gases, Liquids and Electrolytes, 1163. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-540-73735-3_939.

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Winkelmann, Jochen. "Diffusion coefficient of perylene in cis-decahydro-naphthalene". W Diffusion in Gases, Liquids and Electrolytes, 1162. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-540-73735-3_938.

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Winkelmann, Jochen. "Diffusion coefficient of perylene in 2,6,10,15,19,23-hexamethyl-tetracosane". W Diffusion in Gases, Liquids and Electrolytes, 1164. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-540-73735-3_940.

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Wellner, Christian, Claudia Stubinitzky i Hans-Achim Wagenknecht. "Metal Ion- and Perylene Diimide-Mediated DNA Architectures". W DNA in Supramolecular Chemistry and Nanotechnology, 38–51. Chichester, UK: John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781118696880.ch1.3.

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Wang, Zhengran, Lina Zhang, Yuwen Feng, Jingze Bi, Huanzhi Yang, Zhenhu Zhang, Chunxiu Zhang i Jialing Pu. "Synthesis and Mesomorphism of Triphenylene-Perylene Discotic Mesogenic Dyad". W Lecture Notes in Electrical Engineering, 821–26. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1864-5_112.

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Streszczenia konferencji na temat "Perylene"

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Alcacer, L., J. Morgado, R. T. Henriques i M. Almeida. "Modified perylene molecular conductors". W International Conference on Science and Technology of Synthetic Metals. IEEE, 1994. http://dx.doi.org/10.1109/stsm.1994.834655.

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Sasaki, Yoshihiko, Hiroyuki Takamo i Kazuo Kasatani. "Optical nonlinearities of perylene derivatives". W Photonics Asia 2007, redaktorzy Yiping Cui, Qihuang Gong i Yuen-Ron Shen. SPIE, 2007. http://dx.doi.org/10.1117/12.757661.

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Barbedo, A., A. G. Pelosi, J. V. P. Valverde, O. D. Marbello, L. de Boni i C. R. Mendonça. "Study of the Spectroscopic Properties of Perylene". W Latin America Optics and Photonics Conference. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/laop.2022.w4a.42.

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In this work, the spectroscopic properties of Perylene were studied in different solvents, applying the Lippert equation. It has been observed that polar solvents have a more significant effect on the optical properties of Perylene.
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Pratiwi, Herlina, Timothy Siahaan, Mirza Satriawan, Pekik Nurwantoro, Kuwat Triyana, L. T. Handoko i Masbah R. T. Siregar. "Theoretical Determination of The Optimum Thickness of Perylene Layer in Bilayer Phthalocyanine∕Perylene Photovoltaic Device". W INTERNATIONAL WORKSHOP ON ADVANCED MATERIAL FOR NEW AND RENEWABLE ENERGY. AIP, 2009. http://dx.doi.org/10.1063/1.3243259.

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Nayak, Sudhanshu Kumar, Md Soif Ahmed, Someshwar Pola, Dipanjan Banerjee, Venugopal Rao Soma, Prabhakar Chetti i Sai Santosh Kumar Raavi. "Ultrafast Nonlinear Optical Studies of Polycyclic Aromatic Hydrocarbon (PAHs) based Benzo[b]naphtho[1,2,3,4-pqr] Perylene using Femtosecond Z-scan". W Frontiers in Optics. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/fio.2022.jtu4b.15.

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The ultrafast nonlinear optical properties of Polycyclic aromatic hydrocarbon (PAHs) based benzo[b]perylene derivative named as benzo[b]naphtho[1,2,3,4-pqr]perylene (BNP) are studied using femtosecond Z-scan at 800 nm. A strong three-photon absorption coefficient of 0.56×10-5 cm3/GW2 was observed.
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Husanova, Dilfuza, Jurat Ochilov, Maksudbek Yusupov i Umedjon Khalilov. "PRE-NUCLEATION MECHANISMS OF FLAT PERYLENE-BASED ORGANIC NANOCRYSTALS". W Proceedings of MMIT’23 International Conference 25 May 2023y. Tashkent International University of Education, 2023. http://dx.doi.org/10.61587/mmit.uz.vi.54.

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Although perylene-based organic nanocrystals are used in various fields, understanding their pre-nucleation processes (considered the first steps of the synthesis) is still elusive. In this work, the nature of pre-nucleation processes of organic crystal synthesis based on two types of flat perylene molecules is studied using reactive molecular dynamics simulations. The obtained results indicate that the additional methoxy group significantly affects the clustering rate of molecules and the structure of the formed clusters. In addition, the cluster formation behavior for both molecules is explained by Ostwald ripening theory. The analysis, which is based on the Gibbs free energy of formation, clarifies that this phenomenon depends on the volume-dependent stability of clusters. In general, this study contributes to a better understanding of the onset of synthesis of organic nanocrystals based on flat perylene molecules for modern nanotechnology
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YU, Zhen, Ying WANG, Wen-guang WANG i Jia-ling PU. "Synthesis and Characterization of Novel Perylene Diimide". W International Conference on Advanced Material Science and Engineeering (AMSE2016). WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789813141612_0039.

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Mier, L., Y. Min, E. O. Danilov, A. J. Epstein, T. L. Gustafson, P. M. Champion i L. D. Ziegler. "Ultrafast Vibrational Spectroscopy of Perylene Diimide Complexes". W XXII INTERNATIONAL CONFERENCE ON RAMAN SPECTROSCOPY. AIP, 2010. http://dx.doi.org/10.1063/1.3482517.

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Gao, Jie, Jingjing Cheng, Yan Wang i Juan Li. "Research on perylene diimide organic solar cells". W 2022 International Conference on Optoelectronic Materials and Devices, redaktor Qiang Huang. SPIE, 2023. http://dx.doi.org/10.1117/12.2674139.

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Ng, A. M. C., W. Y. Tong, A. B. Djurišić i W. K. Chan. "Perylene tetracarboxylic diimide (PTCDI) nanowires: synthesis and characterization". W SPIE Optics + Photonics, redaktorzy Zeno Gaburro i Stefano Cabrini. SPIE, 2006. http://dx.doi.org/10.1117/12.677626.

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Raporty organizacyjne na temat "Perylene"

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Higgins, Daniel A., Aifang Xie i Bei Liu. Characterization of New Materials for Photovoltaic Thin Films: Aggregation Phenomena in Self-Assembled Perylene-Based Diimides. Fort Belvoir, VA: Defense Technical Information Center, lipiec 2005. http://dx.doi.org/10.21236/ada435695.

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