## Abstract We report on a novel colorimetric and fluorometric chemosensor for fluoride ions based on 4‐(2‐acryloyloxyethylamino)‐7‐nitro‐2,1,3‐benzoxadiazole (NBDAE)‐labeled polymers. Upon gradual addition of fluoride ions (F^–^), the green fluorescence emission of NBDAE moieties can be dramatical
A Dual Colorimetric and Fluorometric Sensor for Lead Ion Based on Conjugated Polydiacetylenes
✍ Scribed by Kyung Mi Lee; Xiaoqiang Chen; Wang Fang; Jong-Man Kim; Juyoung Yoon
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 367 KB
- Volume
- 32
- Category
- Article
- ISSN
- 1022-1336
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✦ Synopsis
Abstract
A PDA based sensor, derived from a di‐(2‐picolyl) amine (DPA) substituted diacetylene monomer, displayed a selective colorimetric change and a large fluorescence enhancement in the presence of lead ions. The lead selective PDA‐based chemosensor enabled easy detection of the presence of lead in 100% aqueous solution by the naked‐eye. magnified image
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## Abstract A novel colorimetric and fluorometric chemosensor for Hg^2+^ detection based on poly(__p__‐phenyleneethynylene) (PPE) containing benzo[2,1,3]thiadiazole (BDT) has been developed. A highly Hg^2+^‐selective fluorescence quenching property in conjunction with a visible colorimetric change