期刊
MOLECULES
卷 17, 期 5, 页码 5108-5125出版社
MDPI
DOI: 10.3390/molecules17055108
关键词
naphthalene; organosilicon compounds; fluorescence; absorption; fluorescence quenching; fluorescence lifetime; fluorescence quantum yield
资金
- Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan [17034056, 20550049, 23550047]
- Mazda Foundation
- Grants-in-Aid for Scientific Research [23550047, 20550049, 17034056] Funding Source: KAKEN
Silyl-substituted naphthalene derivatives at the 1- and 1,4-positions were synthesized and their UV absorption, fluorescence spectroscopic properties, and fluorescence lifetimes were determined. Analysis of the results shows that the introduction of silyl groups at these positions of the naphthalene chromophore/fluorophore causes shifts of the absorption maxima to longer wavelengths and increases in fluorescence intensities. Bathochromic shifts of the absorption maxima and increases in fluorescence intensities are also promoted by the introduction of methoxy and cyano groups at the naphthalene 4- and 5-positions. In addition, the fluorescence of 9,10-dicyanoanthracene is efficiently quenched by these naphthalene derivatives with Stern-Volmer plot calculated rate constants that depend on the steric bulk of the silyl groups.
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