期刊
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
卷 404, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotochem.2020.112900
关键词
nitrogen heterocycles; donor-acceptor systems; nonlinear optic; fluorescence; intramolecular charge transfer
资金
- Russian Foundation for Basic Research [18-2923045 mk]
A series of D-pi-A chromophores based on [1,2,5]oxadiazolo[3,4-b]pyrazine electron-withdrawing group were designed and studied using cyclic voltammetry, UV-Vis, emission spectroscopy, and EFISH method. The influence of pi-conjugated linkers and amino-electron-donating groups on the properties of the chromophores were analyzed experimentally and theoretically, including their second order nonlinear optical properties.
A series of D-pi-A chromophores based on [1,2,5]oxadiazolo[3,4-b]pyrazine electron-withdrawing group has been designed. The influence of the pi-conjugated linker (1,4-phenylene and 2,5-thienylene) and the amino-electron-donating group (diphenylamino and carbazol-9-yl) was studied by cyclic voltammetry, UV-Vis and emission spectroscopy. The second order nonlinear optical properties were also studied using the electric field induced second harmonic generation (EFISH) method. The experimental results have been rationalized by theoretical DFT calculations.
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