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

52 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

Bibliographical note

Publisher Copyright:
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

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

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