A highly sensitive fluorescent chemosensor for simultaneous determination of Ag(I), Hg(II), and Cu(II) ions: Design, synthesis, characterization and application

Nguyen Khoa Hien, Nguyen Chi Bao, Nguyen Thi Ai Nhung, Nguyen Tien Trung, Pham Cam Nam, Tran Duong, Jong Seung Kim, Duong Tuan Quang

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

A fluorescent chemosensor based on dimethylaminocinnamaldehyde-aminothiourea (DA) has been designed, synthesized, and applied with a combined theoretical and experimental study. The synthetic path, optimized molecular structure and characteristics of DA were carried out using the calculations at the B3LYP/LanL2DZ level of theory. The experimental investigations have a good agreement with the theoretical results. DA can be used as a chemosensor for simultaneous quantification of silver, copper, and mercury ions in aqueous solution at the ppb level. The stable geometric structures of the complexes between DA and Ag+, Hg2+, Cu2+ with stoichiometry of 1:1, 2:1, and 2:1, have been found and investigated for electronic properties and fluorescence quenching phenomena by using Atoms in Molecules (AIM) and Natural Bond Orbitals (NBO) analyses.

Original languageEnglish
Pages (from-to)89-96
Number of pages8
JournalDyes and Pigments
Volume116
DOIs
Publication statusPublished - 2015

Keywords

  • AIM analysis
  • Chemosensor
  • Fluorescence
  • Hg(II), Cu(II), Ag(I) ions
  • NBO analysis
  • TD-DFT calculations

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Process Chemistry and Technology

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