CO<sub>2</sub>-triggered fluorescence “turn-on” response of perylene diimide-containing poly(N,N-dimethylaminoethyl methacrylate)
作者:Li Qun Xu、Bin Zhang、Ming Sun、Liang Hong、Koon-Gee Neoh、En-Tang Kang、Guo Dong Fu
DOI:10.1039/c2ta00482h
日期:——
A fluorophoreâpolymer conjugate, PBIâPDMAEMA, consisting of two arms of CO2-responsive N,N-dimethylaminoethyl methacrylate polymer (PDMAEMA) and a center perylene-3,4,9,10-tetracarboxylic acid bisimide (PBI) fluorophore, has been synthesized via atom transfer radical polymerization of N,N-dimethylaminoethyl methacrylate from the N,Nâ²-bis2-[2-[(2-bromo-2-methylpropanoyl)oxy]ethoxy]ethyl}perylene-3,4,9,10-tetracarboxylic acid bisimide initiators. This fluorophoreâpolymer conjugate exhibits a colorimetric change and a fluorescent âturn-onâ response to the presence of CO2 in aqueous solutions. Upon removal of adsorbed CO2 by N2 degassing, this CO2 chemosensor is completely recoverable. The application of this fluorophoreâpolymer conjugate in determining the concentration of CO2 in carbonated beverages was demonstrated.
一种荧光聚合物共轭物PBI-PDMAEMA由两部分组成:对二氧化碳敏感的N,N-二甲基氨基乙基甲基丙烯酸酯聚合物(PDMAEMA)和位于中心的芘-3,4,9,10-四羧酸双酰亚胺(PBI)荧光团。该荧光聚合物共轭物通过N,N-二甲基氨基乙基甲基丙烯酸酯的原子转移自由基聚合反应合成,其原料为N,N-二甲基氨基乙基甲基丙烯酸酯和N,N-二2-[2-[(2-溴-2-甲基丙酰)氧基]乙氧基]乙基}芘-3,4,9,10-四羧酸双酰亚胺引发剂。该荧光聚合物共轭物在水溶液中存在二氧化碳时,会呈现色度变化和荧光“开启”响应。通过N2脱气去除吸附的二氧化碳后,这种二氧化碳化学传感器可以完全恢复。该荧光聚合物共轭物在测定碳酸饮料中二氧化碳浓度中的应用得到了证实。