期刊
DYES AND PIGMENTS
卷 206, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2022.110601
关键词
BODIPY Dimers; beta-beta linked; Photophysical properties; Two-photon absorption; Synthesis
资金
- Open Research Fund of School of Chemistry and Chemical Engineering, Henan Normal University, P. R. China
- CNRS UMR6302
- Universite Bourgogne Franche-Comte
- Conseil Regional de Bourgogne through the European Regional Development Fund (FEDER-FSEBourgogne 2014/2020)
- CoMICS (Chemistry of Molecular Interaction Catalysis and Sensors) program [2016-6200FE003S00257]
Five beta-beta linked BODIPY dimers with different electron-donating/withdrawing groups were synthesized and their photophysical and electrochemical properties were investigated.
Five beta-beta linked BODIPY dimers (d1-d5) with different electron-donating/withdrawing groups at the meso-position were synthesized through improved synthetic methods. All compounds were characterized by H-1 and C-13 NMR and HRMS. The single crystal X-ray analyses indicate that d4 and d5 display a linear coplanar conformation with two linked BODIPY moiety. Their photophysical and electrochemical properties have been investigated by UV-vis absorption spectroscopy, steady-state and time-resolved fluorescence spectroscopy, two-photon excited spectroscopy and cyclic voltammetry. The beta-beta linked BODIPY dimers exhibit a prominent red shift from the visible region to the red/near-infrared region of their absorption and emission spectra, large Stokes shifts and moderate two-photon absorption cross section sigma(2) with different groups at the meso-position.
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