Preparation and characterization of fluorescent polysulfate based on fluorescein

• Published in: Hecheng xiangjiao gongye
• Main Author: LI Fu-chong1, LIU Wei2, CAO Wei2, LI Xu3, GUO Jun-hong1, CUI Jin-feng1, YANG Bao-ping1
• Format: Article
• Language: Chinese
• Published: Editorial Office of China Synthetic Rubber Industry 2023-03-01
• Subjects: polysulfate; sulfur and fluorine exchange reaction; fluorescein; click chemistry; fluorescent polysulfate; fluorescence characteristics
• Online Access: http://hcxjgy.paperopen.com/oa/DArticle.aspx?type=view&id=202302001
• ISSN: 1000-1255

Fluorescent polysulfate （PSE-FL） was prepared by condensation polymerization of bisphenol A （BA）, propane-2,2-diyl bis（4,1-phenylene） bis（sulfurofluoridate） and fluorescein in high temperature solution, and its structure and fluorescence characteristics were investigated. The results showed that the number average molecular weight of the prepared PSE-FL was 33 413 g/mol, the weight average molecular weight was 55 043 g/mol and the molecular weight distribution index was 1.64. It was a typical amorphous polymer with decomposition temperature about 319 ℃ and a glass transition temperature about 128 ℃. The solid ultraviolet absorption test results showed that PSE-FL had the maximum absorption wavelength at 502 nm and the fluorescence emission spectrum showed that PSE-FL displayed the fluorescence emission wavelength at 554 nm.