The (E)-2-(2-hydroxystyryl)quinolin-8-ol (abbreviated as HSQ) molecule was synthesized and characterized. The ESIPT, solvatochromism properties, electronic structure, and ground and excited electric dipole moments of this molecule were measured using absorption and fluorescence spectra recorded in 13 different solvents. Its electronic structure via electronic transitions was investigated to find the quantitative values of solvatochromism properties by LSER calculations. The ESIPT mechanism was clarified; ground and excited dipole moments were determined using solvatochromic shift methods. The DFT (B3LYP)/6-311$++$G(d,p) method and basis set with potential energy surface (PES) calculations of proton transfer were used to explain the ESIPT mechanism. NBO analysis, NLO properties, and behavior under an electric field were also determined.
(E)-2-(2-羟基
苯乙烯基)
喹啉-8-醇(简称HSQ)分子被合成并进行了表征。利用在13种不同溶剂中记录的吸收和荧光光谱测量了该分子的ESI
PT、溶剂色性、电子结构以及基态和激发态电偶极矩。通过电子跃迁研究了其电子结构,并通过L
SER计算找到了溶剂色性性质的定量值。ESI
PT机理得到了澄清;利用溶剂色性位移法确定了基态和激发态偶极矩。利用DFT(B3LYP)/6-311$++$G(d,p)方法和基态集与势能面(PES)计算质子转移来解释ESI
PT机理。还确定了NBO分析、NLO性质和电场下的行为。