Synthesis and Spectral Properties of Novel Water-soluble Near-infrared Fluorescent Indocyanines
Two fluorescent pentamethine and a squarylium indocyanines containing at least one p-carboxybenzyl group on N atoms in the heterocyclic rings were synthesized. They had good water solubility and photostability. Their maximum absorption and maximum emission were600-700 nm in water. When it was anchored onto nanostructured TiO2 electrode, compared with in water, the squaraine showed double absorption peaks (one blue shifted and another red shifted)and absorption intensity of the red shift peak increased with the increase of the time of irradiation.The intensity of the blue one decreased simultaneously. We proposed that the presence of two electronic charge forms of squaraine anchored on the TiO2 film might be the reason.
作 者： Li Qiu WANG Xiao Jun PENG Wei Bing ZHANG FEI Yin Jing Nan CUI Xin Qin GAO 作者单位： Li Qiu WANG(State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012;Yanshan University, Qinhuangdao 066004)Xiao Jun PENG,FEI Yin,Jing Nan CUI,Xin Qin GAO(State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012)
Wei Bing ZHANG(Chinese Academy of Science Dalian Institute of Chemical Physics, Dalian 116023)
刊 名： 中国化学快报（英文版） ISTIC SCI 英文刊名： CHINESE CHEMICAL LETTERS 年，卷(期)： 2005 16(3) 分类号： 关键词： Indocyanine p-carboxybenzyl near-infrared fluorescence bioanalysis solar cell.