A New Determination Method of the Solubility Parameter of Polymer Based on AIE

Molecules

Qiang Yu¹  Ben Zhong Tang²  Shan Jiang³  Ke Min Wang³  Tian Ya Huang³ 

[1] Technology, Clear Water Bay, Kowloon, Hong Kong, China;;Department of Chemistry, The Hong Kong University of Science &School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China;

关键词: aggregation-induced emission;    conformation transition;    luminescence;    solubility parameter;   

DOI  :  10.3390/molecules22010054

来源: DOAJ

【 摘 要 】

An accurate method of the fluorescence probe approach based on an aggregation-induced emission (AIE) molecule (tetraphenylethylene) for measuring the solubility parameter of the polymer is reported. This method is distinctive in that the approach can make the polymer chain conformation in solution be related to the fluorescence intensity. Since the solubility parameter of the polymer is also closely linked to its chain conformation in solution, the solubility parameter can be determined by the fluorescence intensity. The range of the solubility parameter of polymethyl methacrylate (PMMA) tested by this method was from 9.00 cal1/2cm−3/2 to 10.00 cal1/2cm−3/2. The results are more accurate than those obtained from the traditional turbidimetric titration method, ranging from 8.60 cal1/2cm−3/2 to 12.15 cal1/2cm−3/2. According to the photoluminescence (PL) intensities spectra, the solubility parameters of PMMA and polyvinyl acetate (PVAc) are 9.19 cal1/2cm−3/2 and 9.85 cal1/2cm−3/2, respectively.

【 授权许可】

Unknown