Electronic spectra and excited-state dynamics of 4-fluoro-N,N-dimethylaniline

被引:10
|
作者
Fujiwara, Takashige [1 ]
Reichardt, Christian [2 ,3 ]
Vogt, R. Aaron [2 ,3 ]
Crespo-Hernandez, Carlos E. [2 ,3 ]
Zgierski, Marek Z. [4 ]
Lim, Edward C. [5 ,6 ]
机构
[1] Ohio State Univ, Dept Chem & Biochem, Columbus, OH 43210 USA
[2] Case Western Reserve Univ, Dept Chem, Cleveland, OH 44106 USA
[3] Case Western Reserve Univ, Ctr Chem Dynam, Cleveland, OH 44106 USA
[4] Natl Res Council Canada, Steacie Inst Mol Sci, Ottawa, ON K1A 0R6, Canada
[5] Univ Akron, Dept Chem, Akron, OH 44325 USA
[6] Univ Akron, Ctr Laser & Opt Spect, Akron, OH 44325 USA
关键词
CHARGE-TRANSFER STATES;
D O I
10.1016/j.cplett.2013.09.028
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
Concerted ultrafast time-resolved spectroscopic experiments and ab initio computational (TDDFT) studies of the electronic transitions of 4-fluoro-N,N-dimethylaniline (FDMA) have been performed to investigate the mechanism of photo-induced intramolecular charge transfer (ICT). The compound FDMA shows dual fluorescence from a pi pi* state and a closely-lying twisted intramolecular charge transfer (TICT) state in both n-hexane and acetonitrile. The very similar lifetimes observed for the two emission bands indicate that the pi pi* and the TICT states are effectively in thermal equilibrium at room temperature. (C) 2013 Elsevier B.V. All rights reserved.
引用
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页码:70 / 75
页数:6
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