Quinoline-functionalized BODIPY dyes: Structural and photophysical properties

被引:5
作者
Kukoyi, Adedayo [1 ]
He, Hongshan [1 ]
Wheeler, Kraig [1 ]
机构
[1] Eastern Illinois Univ, Dept Chem & Biochem, Charleston, IL 61920 USA
基金
美国国家科学基金会;
关键词
BODIPY; Dyes; Fluorescence; Structure; Calculations; Quinoline; FLUORESCENT-PROBE; CELLS; SENSITIZERS; CASSETTES; SINGLET;
D O I
10.1016/j.jphotochem.2021.113686
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
BODIPYs at different positions of quinolines show similar absorption spectra but very different visible emission efficiency. Single-crystal structures show different tilting angles of quinoline groups and BODIPY core structure. The emission efficiency decreases as the torsion angle between BODIPY core and quinoline becomes smaller in the order of 4-Q-BDP > 3-Q-BDP > 2-Q-BDP approximate to 2,9-Phen-BDP. The restoration of fluorescence in the presence of methanol and theoretical calculations indicate the photoinduced electron transfer from quinoline N to BODIPY core could be responsible for such a gradual fluorescence change.
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页数:9
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