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A highly sensitive fluorescent chemosensor for simultaneous determination of Ag(I), Hg(II), and Cu(II) ions: Design, synthesis, characterization and application
- Authors
- Nguyen Khoa Hien; Nguyen Chi Bao; Nguyen Thi Ai Nhung; Nguyen Tien Trung; Pham Cam Nam; Tran Duong; Kim, Jong Seung; Duong Tuan Quang
- Issue Date
- 5월-2015
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Chemosensor; Fluorescence; AIM analysis; NBO analysis; TD-DFT calculations; Hg(II), Cu(II), Ag(I) ions
- Citation
- DYES AND PIGMENTS, v.116, pp.89 - 96
- Indexed
- SCIE
SCOPUS
- Journal Title
- DYES AND PIGMENTS
- Volume
- 116
- Start Page
- 89
- End Page
- 96
- ISSN
- 0143-7208
- 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. (C) 2015 Elsevier Ltd. All rights reserved.
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