Time-Resolved Fluorescence Studies on Charge Transfer Interactions in 1,2,4,5-Tetracyanobenzene-Toluene Complex
Time-Resolved Fluorescence Studies on Charge Transfer Interactions in 1,2,4,5-Tetracyanobenzene-Toluene Complex
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1,2,4,5-四氰基苯-甲苯配合物中电荷转移相互作用的时间分辨荧光研究
DOI：
10.1246/bcsj.44.3287
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发表时间：
1971
期刊：
影响因子：
--
通讯作者：
C. Yamanaka
中科院分区：
文献类型：
--
作者：
K. Egawa;N. Nakashima;N. Mataga;C. Yamanaka
测量了不同温度下 1,2,4,5-四氰基苯 (TCNB)-甲苯体系的时间分辨 CT（电荷转移）荧光光谱以及 CT 荧光带不同波长下的荧光上升和衰减曲线。溶剂极性对荧光波数影响的结果和详细研究表明，弛豫过程是由于包括周围溶剂分子在内的结构从弗兰克-康登（F.C.）状态到激发复合物的平衡（e.q.）状态的变化所致。这种弛豫过程导致 CT 荧光发生较大的斯托克斯位移。
Time-resolved CT (charge transfer) fluorescence spectra and the fluorescence rise and decay curves at various wavelengths of the CT fluorescence band have been measured for the 1,2,4,5-tetracyanobenzene (TCNB)–toluene system at various temperatures. The results and detailed studies of the effect of solvent polarity on the fluorescene wavenumbers have demonstrated that the relaxation process is due to the change of structure including the surrounding solvent molecules from the Franck–Condon (F.C.) state to the equilibrium (e.q.) state of the excited complex. This relaxation process causes a large Stokes shift of the CT fluorescence.