A Selective Colorimetric and Fluorometric Chemosensor Based on Conjugated Polydiacetylenes for Cadmium Ion Detection

Thanh Chung Pham, Yong Kyun Kim, Jung Bin Park, Sumin Jeon, Juhyeon Ahn, Yubin Yim, Juyoung Yoon, Songyi Lee

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

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 (Cd2+) at pH 7.4. The PDA−CP solutions showed a colorimetric change from blue to violet in response to various amounts of Cd2+. The chemosensor also showed a rapid fluorescence turn-on response and significant selectivity to Cd2+ compared with other metallic cations. The Cd2+-selective PDA-based sensor system facilitated the visual detection of Cd2+ in aqueous solution. The Cd2+ detection limit of PDA−CP was reduced to 1.85×10−5 M.

Original languageEnglish
Pages (from-to)1133-1137
Number of pages5
JournalChemPhotoChem
Volume3
Issue number11
DOIs
StatePublished - 1 Nov 2019

Keywords

  • cadmium
  • chemosensors
  • colorimetric sensors
  • conjugated polymers
  • Schiff bases

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