| 光谱学与光谱分析 |
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| Spectral Properties, Photodynamic Anticancer Activity and the Interaction with Albumin of Silicon Phthalocyanine Axially Modified by Pyrimidine Derivatives |
| SHEN Xiao-min, JIANG Xiong-jie, ZHU Yu-jiao, ZHANG Han-hui, HUANG Jian-dong* |
| College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China |
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Abstract Photophysical photochemical properties, in vitro photodynamic anticancer activity and interaction with albumin of a new axially modified silicon phthalocyanine,i.e. di (2-amino-6-trifluoromethyl-4-pyrimidinyloxy) silicon phthalocyanine (SiPcF), were studied in the present paper. The Q band maximum absorption of SiPcF located at 686 nm with the molar absorption coefficient of 2.3×105 mol-1·L·cm-1. The fluorescence emission of SiPcF peaked at 694 nm with a fluorescence quantum yield of 0.46. Its singlet oxygen quantum yield produced by photosensitization is 0.38, suggesting that SiPcF is an effective 1O2 photosensitizer. There is strong interaction between SiPcF and bovine serum albumin (BSA). The binding constant is 4.33×105 mol·L-1and the number of binding sites is 1. In vitro experiments show that SiPcF had a high photodynamic anticancer activity against human hepatoma cells HepG2 with an IC50 value down to 5×10-7mol·L-1.
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Received: 2012-12-31
Accepted: 2013-03-15
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Corresponding Authors:
HUANG Jian-dong
E-mail: jdhuang@fzu.edu.cn
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