Zinc-Ion-Induced Aggregation of Gold Clusters for Visible-Light-Excitation-Based Fluorimetric Discrimination of Geometrical Isomers.
aggregation
geometrical isomers
luminescence
nanoclusters
proton transfer
Journal
Chemphyschem : a European journal of chemical physics and physical chemistry
ISSN: 1439-7641
Titre abrégé: Chemphyschem
Pays: Germany
ID NLM: 100954211
Informations de publication
Date de publication:
20 04 2020
20 04 2020
Historique:
received:
31
10
2019
revised:
04
02
2020
pubmed:
6
2
2020
medline:
6
2
2020
entrez:
5
2
2020
Statut:
ppublish
Résumé
Herein, we report discrimination of dicarboxylic acids - fumaric acid (FA) and maleic acid (MA) - exhibiting geometrical isomerism, using nanoclusters based luminescent probe having excitation under broad day light. The luminescent probe was designed via complexation reaction between zinc ions and ligands (mercaptopropioinc acid; MPA) stabilizing the gold nanoclusters. This resulted in formation of nanoaggregates exhibiting bright green luminescence upon excitation at 450 nm capable of discriminating between FA and MA upto nanomolar level. The basis of discrimination has been attributed to deprotonation of FA and MA following interaction with MPA moieties present on the surface of the nanoaggregates and being governed by the stability of the respective conjugate base of the geometrical isomers of the dicarboxylic acids. As a consequence of different extent of deprotonation of FA and MA upon interaction with the cluster aggregates, different effect on the luminescence of the aggregates was observed, thus enabling discernible fluorimetric discrimination between FA and MA under visible light excitation.
Identifiants
pubmed: 32017395
doi: 10.1002/cphc.201901044
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
809-813Subventions
Organisme : Department of Electronics and Information Technology, Government of India
ID : 5(9)/2012-NANO
Pays : International
Informations de copyright
© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
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