Добірка наукової літератури з теми "Exciton Coupling Chirality"
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Статті в журналах з теми "Exciton Coupling Chirality":
Dhbaibi, Kais, Ludovic Favereau, Monika Srebro-Hooper, Marion Jean, Nicolas Vanthuyne, Francesco Zinna, Bassem Jamoussi, Lorenzo Di Bari, Jochen Autschbach, and Jeanne Crassous. "Exciton coupling in diketopyrrolopyrrole–helicene derivatives leads to red and near-infrared circularly polarized luminescence." Chemical Science 9, no. 3 (2018): 735–42. http://dx.doi.org/10.1039/c7sc04312k.
Suzuki, Takanori, Yusuke Ishigaki, Tomohiro Iwai, Yuki Hayashi, Aiichiro Nagaki, Ryo Katoono, Kenshu Fujiwara, and Jun-ichi Yoshida. "Transmission of Point Chirality to Axial Chirality for Strong Circular Dichroism in Triarylmethylium-o,o-dimers." Synlett 29, no. 16 (June 25, 2018): 2147–54. http://dx.doi.org/10.1055/s-0037-1610190.
Pescitelli, Gennaro. "For a Correct Application of the CD Exciton Chirality Method: The Case of Laucysteinamide A." Marine Drugs 16, no. 10 (October 16, 2018): 388. http://dx.doi.org/10.3390/md16100388.
Nishihara, Taishi, Akira Takakura, Masafumi Shimasaki, Kazunari Matsuda, Takeshi Tanaka, Hiromichi Kataura, and Yuhei Miyauchi. "Empirical formulation of broadband complex refractive index spectra of single-chirality carbon nanotube assembly." Nanophotonics 11, no. 5 (January 12, 2022): 1011–20. http://dx.doi.org/10.1515/nanoph-2021-0728.
Cataldo, Franco. "On the Optical Activity of Poly(l-lactic acid) (PLLA) Oligomers and Polymer: Detection of Multiple Cotton Effect on Thin PLLA Solid Film Loaded with Two Dyes." International Journal of Molecular Sciences 22, no. 1 (December 22, 2020): 8. http://dx.doi.org/10.3390/ijms22010008.
Norman, Patrick, та Mathieu Linares. "On the Interplay Between Chirality and Exciton Coupling: A DFT Calculation of the Circular Dichroism inπ-Stacked Ethylene". Chirality 26, № 9 (19 травня 2014): 483–89. http://dx.doi.org/10.1002/chir.22331.
A Kadir, Muhamad Faid, Agustono Wibowo, Fatimah Salim, El Hassane Anouar, Khalijah Awang, Moses Kiprotich Langat, and Rohaya Ahmad. "Conformational Analysis of Diterpene Lactone Andrographolide towards Reestablishment of Its Absolute Configuration via Theoretical and Experimental ECD and VCD Methods." Indonesian Journal of Chemistry 21, no. 1 (December 4, 2020): 148. http://dx.doi.org/10.22146/ijc.55206.
Occhiuto, Ilaria Giuseppina, Maria Angela Castriciano, Mariachiara Trapani, Roberto Zagami, Andrea Romeo, Robert F. Pasternack, and Luigi Monsù Scolaro. "Controlling J-Aggregates Formation and Chirality Induction through Demetallation of a Zinc(II) Water Soluble Porphyrin." International Journal of Molecular Sciences 21, no. 11 (June 3, 2020): 4001. http://dx.doi.org/10.3390/ijms21114001.
Kessinger, Roland, Carlo Thilgen, Tiziana Mordasini, and Francois Diederich. "ChemInform Abstract: Optically Active Macrocyclic cis-3 Bis-Adducts of C60: Regio- and Stereoselective Synthesis, Exciton Chirality Coupling, and Determination of the Absolute Configuration, and First Observation of Exciton Coupling Between Fullerene Chro." ChemInform 32, no. 10 (March 6, 2001): no. http://dx.doi.org/10.1002/chin.200110104.
Kessinger, Roland, Carlo Thilgen, Tiziana Mordasini, and François Diederich. "Optically Active Macrocycliccis-3 Bis-Adducts of C60: Regio- and Stereoselective Synthesis, Exciton Chirality Coupling, and Determination of the Absolute Configuration, and First Observation of Exciton Coupling between Fullerene Chromophores in a Chiral Environment." Helvetica Chimica Acta 83, no. 12 (December 20, 2000): 3069–96. http://dx.doi.org/10.1002/1522-2675(20001220)83:12<3069::aid-hlca3069>3.0.co;2-w.
Дисертації з теми "Exciton Coupling Chirality":
Matozzo, Paola. "Helicene-porphyrin conjugates : exciton coupling and chiral-Induced spin selectivity." Electronic Thesis or Diss., Université de Rennes (2023-....), 2023. http://www.theses.fr/2023URENS108.
During this thesis work, new helical molecular structures were prepared, their chiroptical responses, in particular the Exciton Coupling phenomenon, were studied and an intriguing property recently discovered, the Chiral-Induced Spin Selectivity, was investigated through different techniques. First, we illustrated two novel families of helicene-porphyrin conjugates, H6Pr1-3 and PrZnPhH6, prepared starting from one common helicenic core and porphyrin units. The first systems H6Pr1-3 were fully characterized and their photophysical and chiroptical properties were investigated experimentally and through theoretical calculations (thanks to our collaborators at University at Buffalo), unambiguously confirming the presence and effectiveness of EC chirality in helicenes through the very strong bisignate CD response in the Soret band along with slightly ECD-active Q-bands. Interestingly, these systems also revealed CPL activity which is still very rare in chiral porphyrins. This work was published in Chemical Communications. The second type of helicene-porphyrin conjugate displayed similar exciton chirality but with overall less intense chiroptical activities (both in ECD and in CPL). These results led us to further investigations on the Exciton Coupling of these systems: the role of the interchromophoric distance and of the conjugation were explored by changing the spacer between the chiral unit and the chromophores, as well as the metallic centers. A noteworthy enhancement was achieved with the family of molecules MPrH6: the 2,5-bis-ethynyl carbo[6]helicene is directly linked to the porphyrins avoiding the spacer, so that the interchromophoric distance was reduced. Therefore, the investigation of the properties was extended to the influence of the metal and several derivatives were prepared. Thanks to the promising results these derivatives were selected as preliminary candidates for CISS measurements through mc-AFM, in collaboration with Naaman’s group at Weizmann Institute of Science and spin polarization as high as 50% was obtained for the zinc complex. The last system MPrOMeH6, which includes a direct C-C bond between the chiral unit and the chromophore, was designed to optimize the distance between the metallic centers in the porphyrin core and to exploit the metal-metal interactions, specifically in magnetically-active centres like the V(IV)O derivative, that will be studied further through EPR spectroscopy. Overall, these results nicely illustrate how molecular engineering using functionalization with strongly polarizable units in close proximity enables the fine-tuning of the chiroptical signatures. This strategy also allows the access to CPL active porphyrin derivatives and opens up new opportunities for spintronics applications. In the last chapter we described the investigation of the spin filtering ability of helicene-based Self-Assembled Monolayer through the formation of a chemical bond with the surface: the helicenic unit was decorated with a redox moiety and a grafting unit, in order to obtain a proper orientation on the surface and to explore how the electron transfer reaction depends on the chirality through Spin Dependent Electrochemistry. More specifically, the bis-ethynyl hexahelicene has been functionalized with a conjugated ferrocene unit as redox probe on one side and i) a carboxylic acid (anchoring group for TiO2) for H6FeCOOH; ii) a thioacetate moiety (for Au surface) for H6FeSAc and ii) with a terminal alkyne (for Si-H surface). Promising preliminary results have been obtained for the H6FeCOOH and H6FeSAc derivatives but further characterizations are needed to explore the organization of the compounds on surface, the measurements are ongoing in collaboration with Naaman’s group. Thanks to the combination of the carbohelicene with chromophores and different grafting functions we are able to obtain promising materials with intriguing chiroptical properties and spin filtering ability
Тези доповідей конференцій з теми "Exciton Coupling Chirality":
Rich, Christopher C., and Renee R. Frontiera. "Exciton Chirality and Vibronic Coupling: Ultrafast Angular Momentum Changes in Molecular Aggregates Detected by Time-Resolved Raman Spectroscopy." In International Conference on Ultrafast Phenomena. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/up.2022.w4a.10.
Schanne-Klein, M. C., T. Boulesteix, F. Hache, M. Alexandre, G. Lemercier, and C. Andraud. "Strong chiroptical effects in surface second harmonic generation obtained for molecules exhibiting excitonic coupling chirality." In Nonlinear Optics: Materials, Fundamentals and Applications. Washington, D.C.: OSA, 2002. http://dx.doi.org/10.1364/nlo.2002.thc2.
Kumar, Satish, and Jayathi Y. Murthy. "Interfacial Thermal Transport in Carbon Nanotubes." In ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/ht2009-88554.