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《Chinese Journal of Luminescence》 2012-12
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Spectroscopic Properties of Two Kinds of Zn Porphyrin-functionalized Polymer and Their Coordination Products with Terbuthylazine

YU Long1,WANG Rui-xin1,GAO Bao-jiao1,GENG Tian-qi2,CHEN Mei-jun2, LEI Cai-ping1,LIU Shao-wei1,HUANG Xiao-li1,LEI Ming1(1.Department of Chemical Engineering,North University of China,Taiyuan 030051,China; 2.Gansu Yinguang Chemical Industry Group Co.,LTD.,Baiyin 730900,China)  
The benzylporphyrin(PP)-functionalized polyglyceryl methacrylate(PGMA) and the hydroxylbenzylporphyrin(HPP)-functionalized PGMA,i.e.PP-PGMA and HPP-PGMA,were coordinated with Zn2+ ion respectively,resulting in the Zn porphyrin-functionalized PGMA,i.e.ZnPP-PGMA and ZnHPP-PGMA.The chemical structures of ZnPP-PGMA and ZnHPP-PGMA were characterized by nuclear magnetic resonance(1H-NMR) spectroscopy.The spectroscopic properties of ZnPP-PGMA and ZnHPP-PGMA were studied by means of UV-Vis spectroscopy and fluorescence spectroscopy.The axial coordination reaction between two kinds of Zn porphyrin-functionalized PGMA and terbuthylazines was studied by using the fluorescence spectrum titration method.The affective factors for fluorescence character of axial coordination reaction were investigated.The results show that both ZnPP-PGMA and ZnHPP-PGMA have possessed strong spectral characteristics.Comparing with PP-PGMA and HPP-PGMA,the Soret absorption bands of ZnPP-PGMA and ZnHPP-PGMA exhibited obvious red shift,and the blue shift occurred for Q emission bands of them.In addition,both the Soret and Q absorption bands of ZnPP-PGMA exhibited red shift in the electronic absorption spectra.The fluorescence quenching occurred in the product of terbuthylazine.The fluorescence quenching for ZnHPP-PGMA was a little less than ZnPP-PGMA.It is because the hydrogen bonding between ZnHPP-PGMA and terbuthylazine led to the weaker axial coordination.Moreover,the fluorescence quenching of ZnHPP-PGMA was strengthed with the increasing concentration of terbuthylazine.
【Fund】: 山西省青年科技研究基金(2010021008-4)资助项目
【CateGory Index】: O626
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