Synthesis and Spectral Properties of New Water-soluble Fluorescent Label Squarylium Indocyanine Dyes

Chem. J. Chinese Universities

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Synthesis and Spectral Properties of New Water-soluble Fluorescent Label Squarylium Indocyanine Dyes

SONG Bo^1,2, ZHANG Qian², PENG Xiao-Jun¹*, MA Wen-Hui^1,2, WANG Bing-Shuai¹, FU Xin-Mei¹

1. State Key Laboratory of Fine Chemical, Dalian University of Technology, Dalian 116012, China;
2. College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China

Received:2007-08-26 Revised:1900-01-01 Online:2008-05-10 Published:2008-05-10
Contact: PENG Xiao-Jun

Abstract

Abstract: Six water-soluble squarylium indocyanine dyes were synthesized and their structures were confirmed by ¹H NMR and MS spectroscopy. The absorption and emission spectra of these dyes in water, methanol, ethanol, DMF, DMSO were studied. The spectra of these dyes exhibit a negative solvatochromism. The photo stability of these dyes in water was investigated as well. It is demonstrated that the electron-withdrawing group on N-position of cyanine dyes improves the photo stability as compared with the dyes with electron-donating group which decreases the photo stability obviously.

Key words: Squaric acid, Cyanine dye, Water-solubility, Photo stability

CLC Number:

O626.32+9

TrendMD:

SONG Bo^1,2, ZHANG Qian², PENG Xiao-Jun¹*, MA Wen-Hui^1,2, WANG Bing-Shuai¹, FU Xin-Mei¹. Synthesis and Spectral Properties of New Water-soluble Fluorescent Label Squarylium Indocyanine Dyes[J]. Chem. J. Chinese Universities, doi: .

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Synthesis and Spectral Properties of New Water-soluble Fluorescent Label Squarylium Indocyanine Dyes

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