Tb-doped BSA-gold nanoclusters as a bimodal probe for the selective detection of TNT.

Autor: Anju SM; Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala, 695581, India., Anjana RK; Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala, 695581, India., Vijila NS; Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala, 695581, India., Aswathy AO; Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala, 695581, India., Jayakrishna J; Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala, 695581, India., Anjitha B; Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala, 695581, India., Anjalidevi JS; Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala, 695581, India., Adhya S; Department of Chemistry, School of Applied Sciences, Central University of Tamil Nadu, Thiruvavur, Tamil Nadu, 610104, India., George S; Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala, 695581, India. emailtosony@gmail.com.
Jazyk: angličtina
Zdroj: Analytical and bioanalytical chemistry [Anal Bioanal Chem] 2020 Jul; Vol. 412 (17), pp. 4165-4172. Date of Electronic Publication: 2020 May 01.
DOI: 10.1007/s00216-020-02654-0
Abstrakt: Trinitrotoluene (TNT) is a widely used explosive belonging to the family of nitroaromatic compounds, and its misuse poses a significant threat to society. Herein, we propose a Tb-BSA-AuNC fluorescent and colorimetric sensing probe for the selective onsite detection of TNT in the aqueous phase. Tb-doped BSA-protected gold nanoclusters (Tb-BSA-AuNCs) were synthesized by a microwave-assisted method, and TNT detection was carried out utilizing the chemistry of Meisenheimer complex formation. Tb doping of gold nanoclusters was demonstrated to facilitate better electron shuttling effects and thereby improve the efficiency of complex formation between the TNT and gold nanoclusters. A paper strip assay was also developed for TNT detection with the designed probe. Limits of detection and quantification of 0.2136 mM and 0.7120 mM, respectively, were achieved. Graphical abstract.
Databáze: MEDLINE
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