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Role of tert-butyl in the linear and nonlinear optical property of push-pull chromophores.
- Source :
-
Journal of Photochemistry & Photobiology A: Chemistry . Jan2018, Vol. 351, p240-244. 5p. - Publication Year :
- 2018
-
Abstract
- Through comparing the linear and nonlinear optical property of two pull-push chromophores, which are composed of difluoroboron β-diketonate functionalized with carbazole and tert-butyl carbazole, the role of tert-butyl in chromosphere has been discussed in detail. The tert-butyl unit would lead to the absorption and fluorescence peak red shift and accelerate the fluorescence relaxation rate of chromophores. Moreover, the tert-butyl unit would affect obviously the two-photon optical property of chromophore according to the Z-scan test. The transient absorption (TA) data shows that these two pull-push chromopphores both own intramolecular charge transfer (ICT) characteristics and the tert-butyl unit accelerate the dynamic rate of ICT generation and relaxation process, which may be responsible for the variance of fluorescence property. [ABSTRACT FROM AUTHOR]
- Subjects :
- *BUTYL group
*CHROMOPHORES
*NONLINEAR optics
*BORON
*CARBAZOLE
Subjects
Details
- Language :
- English
- ISSN :
- 10106030
- Volume :
- 351
- Database :
- Academic Search Index
- Journal :
- Journal of Photochemistry & Photobiology A: Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 126163351
- Full Text :
- https://doi.org/10.1016/j.jphotochem.2017.10.036