Synthesis of fluorescent hyperbranched poly(aryl ether ketones) containing biphenyl units |
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| Authors: | Jianxin Mu Chunling Zhang Weichun Wu Zhenhua Jiang V V Kireev E A Karpuzova |
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| Institution: | (1) Alan G. MacDiarmid Laboratory, College of Chemistry, Jilin University, 2699 Qianjin Street, 130012 Changchun, China;(2) Mendeleev University of Chemical Technology, Miusskaya pl. 9, Moscow, 125047, Russia;(3) College of Materials Science and Engineering, Jilin University, 125 Renmin Street, 130012 Changchun, China |
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| Abstract: | Hyperbranched poly(aryl ether ketones) with M n = (8–10) × 103 and terminal fluorine atoms have been synthesized through the polycondensation of 3,3′,5,5′-tetramethyl-4,4′-dihydroxydiphenyl(A2) and 1,3,5-tris4-(4-fluorobenzoyl)phenoxy]benzene (B3) taken at a molar ratio of (0.720–0.675): 1. The replacement of the terminal fluorine atoms by residues of m-N,N-dimethylaminophenol yields polymers demonstrating green-blue fluorescence both in solution and in the solid state. Fluorescence quenching is observed at concentrations of the said polymers in solutions above 3 g/l. |
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