Photoinduced electrontransfer in a series of naphthyl substituted phenanthrimidazoles has been studied in solutions. The intramolecular charge transfer (CT) leads to a large Stokes shift and large dipole moment in the fluorescent state. Solvatochromic effects on the spectral position and profile of the stationary fluorescence spectra clearly indicate the CT character of the emitting singlet states
已经在溶液中研究了一系列萘基取代的菲咪唑中的光致电子转移。分子内电荷转移 (CT) 导致荧光状态下的大斯托克斯位移和大偶极矩。溶剂致变色对固定荧光光谱的光谱位置和轮廓的影响清楚地表明了所有研究化合物的发射单线态的 CT 特征。CT 荧光分析得出与 Marcus 倒置区域中的电子转移相关的数量。
Kamlet–Taft and Catalán solvatochromism of some π-expanded phenanthrimidazole derivatives – DFT analysis
Some pi-expanded phenanthrimidazole derivatives have been synthesised and characterised by different spectral techniques. Kamlet-Taft and Catalan solvatochromism of synthesised phenanthrimidazole derivatives have been analysed. Non-linear optical (NLO) and natural bond orbital (NBO) analysis have been made by ab initio method to show intramolecular interactions. The energies of the HOMO and LUMO levels, the molecular electrostatic potential (MEP) energy surface, NBO studies have exploited the existence of intramolecular charge transfer (ICT) within the molecule. (C) 2014 Elsevier B.V. All rights reserved.