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A Selective Colorimetric and Fluorometric Chemosensor Based on Conjugated Polydiacetylenes for Cadmium Ion Detection
Author(s) -
Pham Thanh Chung,
Kim Yong Kyun,
Park Jung Bin,
Jeon Sumin,
Ahn Juhyeon,
Yim Yubin,
Yoon Juyoung,
Lee Songyi
Publication year - 2019
Publication title -
chemphotochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.13
H-Index - 18
ISSN - 2367-0932
DOI - 10.1002/cptc.201900165
Subject(s) - diacetylene , polydiacetylenes , chemistry , detection limit , fluorescence , cadmium , aqueous solution , monomer , colorimetry , metal ions in aqueous solution , selectivity , photochemistry , metal , nuclear chemistry , inorganic chemistry , chromatography , organic chemistry , polymer , physics , quantum mechanics , catalysis
In the current study, a polydiacetylene (PDA)‐based sensor, derived from a chelidamic acid‐picolylamine (CP)‐substituted diacetylene monomer, displayed a selective colorimetric and fluorometric change in the presence of cadmium (Cd 2+ ) at pH 7.4. The PDA−CP solutions showed a colorimetric change from blue to violet in response to various amounts of Cd 2+ . The chemosensor also showed a rapid fluorescence turn‐on response and significant selectivity to Cd 2+ compared with other metallic cations. The Cd 2+ ‐selective PDA‐based sensor system facilitated the visual detection of Cd 2+ in aqueous solution. The Cd 2+ detection limit of PDA−CP was reduced to 1.85×10 −5 M.
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