期刊文献+

水溶性大分子汞离子荧光-比色探针RhBH-P(VP-co-GMA)的合成与性能

Synthesis and Photophysical Behaviors of Water-Soluble Copolymer as Chemosensor for Hg2+ in Aqueous Solution
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摘要 采用活性基团修饰法,通过罗丹明B酰肼(RhBH)与乙烯基吡咯烷酮-甲基丙烯酸缩水甘油酯共聚物(P(VP-co-GMA))侧链上环氧基团的开环反应,制得一种键合有罗丹明B酰肼的水溶性聚合物RhBH-P(VP-co-GMA)。在水溶液中,该聚合物本身无色且无荧光,加入汞离子后,罗丹明的螺环结构打开,出现显著的荧光增强和颜色变红,实现了在水溶液中对汞离子的"关-开"荧光检测和裸眼检测。在此条件下,其他共存离子没有明显响应。研究表明:该聚合物是一种高选择性的Hg2+探针,可以实现水溶液中的汞离子检测。 A novel water-soluble copolymer RhBH-P(VP-co-GMA) bearing rhodamine B hydrazine(RhBH) was prepared by ring-opening reaction between RhBH and a water-soluble copolymer P(VP-co-GMA) which was synthesized by radical polymerization of N-vinyl pyrolidone(VP) and glycidyl methacrylate(GMA).Upon addition of Hg2+,the spirocyclic ring of RhBH-P(VP-co-GMA) was opened and a significant fluorescence enhancement as well as colorimetric change was observed,which allowed to detect Hg2+ in aqueous solution by both fluorescence technique and naked eye.In addition,the feeding of other transition metal ions has no interference,which shows RhBH-P(VP-co-GMA) is a highly selective macromolecular probe for detection of Hg2+ in aqueous solution.
出处 《功能高分子学报》 CAS CSCD 北大核心 2011年第4期365-370,共6页 Journal of Functional Polymers
基金 国家自然科学基金(20704017) 教育部中央高校自主科研计划青年基金(JUSRP11108)
关键词 汞离子 罗丹明B酰肼 荧光比色探针 水溶性聚合物 mercury ion rhodamine B hydrazine fluorescence and colorimetric probe water-soluble polymer
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