The N-Arylamino Conjugation Effect in the Photochemistry of Fluorescent Protein Chromophores and Aminostilbenes
作者:Guan-Jhih Huang、Jye-Shane Yang
DOI:10.1002/asia.201000209
日期:2010.9.3
To understand the nonradiative decay mechanism of fluorescent protein chromophores in solutions, a systematic comparison of a series of (Z)‐4‐(N‐arylamino)benzylidene‐2,3‐imidazolinones (ABDIs: 2P, 2PP, 2OM, and 2OMB) and the corresponding trans‐4‐(N‐arylamino)‐4′‐cyanostilbenes (ACSs: 1P, 1PP, 1OM, and 1OMB) was performed. We have previously shown that the parameter Φf+2 Φtc, in which Φf and Φtc are
要了解溶液中荧光蛋白发色团的非辐射衰变机理,对一系列(Z)-4-(N-芳基氨基)亚苄基-2,3-咪唑啉酮(ABDIs:2P,2PP,2OM和2OMB)进行系统比较和相应的反式-4-(ñ -arylamino)-4'- cyanostilbenes(ACSs中:1P,1PP,10M的,和1OMB)进行。我们以前曾表明该参数Φ ˚F 2 Φ TC,其中Φ ˚F和Φtc分别是荧光和反式→顺式光异构化的量子产率,是评估扭曲的分子内电荷转移(TICT)状态在反式氨基苯甲酸酯(包括推挽式ACS )的激发衰变中的贡献的有效探针。一的标准postulating一个TICT状态的存在是Φ ˚F 2 Φ TC «1.0,因为其形成解耦与CC键(τ)扭转通路及其衰变是通常非辐射。我们的研究结果表明,在相同概念也适用于ABDIs 2与参数Φ ˚F +2 ΦZE其中Φ ZE是的量子产率Ž → ë光异构化。我们的结论是τ扭转而比C