Resonance photoionization of a diarylethene derivative in the presence of cyclodextrins using multi-color multi-laser irradiation
作者:Tatsuya Takeshita、Michihiro Hara
DOI:10.1016/j.jphotochem.2015.05.026
日期:2015.9
actuators and optical memory. However, the photodynamics of photochromic materials under excitation by three lasers at three different wavelengths are poorly understood. In this article, we investigate the properties of the well-known photochromic material 2,3-bis(2,4,5-trimethyl-3-thienyl) maleic anhydride (1) upon excitation by one, two and three lasers. In these experiments, α-, β- and γ-cyclodextrin (CD)
光致变色是光诱导的分子的异构化,对于致动器和光学存储器等应用具有吸引力。然而,人们对在三个不同波长的三个激光激发下光致变色材料的光动力学知之甚少。在本文中,我们研究了众所周知的光致变色材料2,3-双(2,4,5-三甲基-3-噻吩基)马来酸酐(1)在被一台,两台和三台激光激发后的性能。在这些实验中,将α-,β-和γ-环糊精(CD)添加到1中以形成包合物,以改善1在水/乙腈中的溶解度。首先,通过改变1 H NMR谱图评估1 / CD包合物的形成。1和计算。我们发现暴露于溶剂的1 / CD包合物中1的每个分子的面积取决于CD的空腔尺寸,并且CD也影响开放形式(OP)的反平行和平行构象的比率)的1。然后通过一台激光(266 nm),两台激光(266和532 nm)和三台激光(266、532和355 nm)的快速光解在720 nm处观察到在1 / CD系统中水合电子的瞬态吸收。的电离量子产率1既取决