Synthesis and Spectral Properties of Novel Water-soluble Near-infrared Fluorescent Indocyanines

Li Qiu WANG Xiao Jun PENG Wei Bing ZHANG Fei YIN Jing Nan CUI Xin Qin GAO

引用本文: Li Qiu WANG,  Xiao Jun PENG,  Wei Bing ZHANG,  Fei YIN,  Jing Nan CUI,  Xin Qin GAO. Synthesis and Spectral Properties of Novel Water-soluble Near-infrared Fluorescent Indocyanines[J]. Chinese Chemical Letters, 2005, 16(3): 341-344. shu
Citation:  Li Qiu WANG,  Xiao Jun PENG,  Wei Bing ZHANG,  Fei YIN,  Jing Nan CUI,  Xin Qin GAO. Synthesis and Spectral Properties of Novel Water-soluble Near-infrared Fluorescent Indocyanines[J]. Chinese Chemical Letters, 2005, 16(3): 341-344. shu

Synthesis and Spectral Properties of Novel Water-soluble Near-infrared Fluorescent Indocyanines

  • 基金项目:

    The authors would like to thank the National Natural Science Foundation of China and The Ministry of Education of China for providing the financial support for this project, and also thank Professor Licheng Sun (Stockholm University, Sweden) for affording the nanostructured TiO2 film electrode.

摘要: 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 were 600-700 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.

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  • 收稿日期:  2004-02-09
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