Sensing of lead ions by a carboxylate-substituted PPE: Multivalency effects

被引：217

作者：

Kim, IB ^{[1
]}

Dunkhorst, A ^{[1
]}

Gilbert, J ^{[1
]}

Bunz, UHF ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA

来源：

MACROMOLECULES | 2005年 / 38卷 / 11期

关键词：

D O I：

10.1021/ma050595o

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The use of PPE4 as a selective and sensitive material to detect lead(II) ions in water was discussed. The reaction of 2,5-diiodo-hydroquinone reaction with 2-bromoethyl acetate in butanone in the presence of potassium carbonate yileded the ester. The quencher efficiency expressed by the Stern-Volmer constant, was equal to the complex formation constant of the quencher Q to the polymer. It was found that the reaction of lead acetate with a dilute solution of PPE4 leads to immidiate clouding and formation of a thick fluorescent yellow precipitate.

引用

页码：4560 / 4562

页数：3

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