Theoretical and Experimental Studies of N,N-Dimethyl-N′-Picryl-4,4′-Stilbenediamine
作者:Vladislav Papper、Yuanyuan Wu、Vladimir Kharlanov、Ayrine Sukharaharja、Terry W. J. Steele、Robert S. Marks
DOI:10.1007/s10895-014-1425-9
日期:2018.1
N,N-dimethyl-N′-picryl-4,4′-stilbenediamine (DMPSDA) was prepared, purified and crystallised in a form of black lustrous crystals, and its absorption and fluorescence spectra were recorded in cyclohexane, acetonitrile and dimethyl sulfoxide. Non-emissive intramolecular charge transfer state (ICT) was clearly observed in this molecule in all three solvents. Theoretical calculations demonstrating a betaine electronic structure of the trinitrophenyl group in the ground state of the molecule and a charge transfer nature of the long wavelength transition S0 → S1 supported the experimental observations of the ICT formation in the molecule.
N,N-二甲基-N'-苦基-4,4'-二苯乙烯二胺(DMPSDA)经制备、纯化和结晶,为黑色有光泽的晶体,并在环己烷、乙腈和二甲亚砜中记录了其吸收和荧光光谱。在所有三种溶剂中,该分子均清晰地观察到非发射性分子内电荷转移态 (ICT)。理论计算证明了分子基态下三硝基苯基的甜菜碱电子结构和长波长跃迁S0 → S1的电荷转移性质,支持了分子中ICT形成的实验观察。