One-pot synthesis of green-emitting gold nanoclusters as a fluorescent probe for determination of 4-nitrophenol

A hydrothermal method was applied to the synthesis of green-emitting gold nanoclusters (Au NCs) which are shown to be viable fluorescent probes for 4-nitrophenol (4-NP). The Au NCs were prepared by using thiol-β-cyclodextrin as a template. Under 365 nm excitation, their green fluorescence has a peak...

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Published in:Mikrochimica acta (1966) 2020-02, Vol.187 (2), p.106-106, Article 106
Main Authors: Li, Yu, Wen, Qiu-Lin, Liu, An-Yong, Long, Yunfei, Liu, Peng, Ling, Jian, Ding, Zhong-Tao, Cao, Qiu-E
Format: Article
Language:English
Subjects:
Analytical Chemistry
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Colorimetry
Cyclodextrins
Fluorescence
Fluorescent indicators
Gold
Investigations
Microengineering
Nanochemistry
Nanoclusters
Nanotechnology
Nitrophenol
Original Paper
Synthesis
Thiols
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cited_by cdi_FETCH-LOGICAL-c411t-b1ff401fbf86a52926c7740cf220fc9f353ab99e1a4e64ce66b7f99cb03af9203
cites cdi_FETCH-LOGICAL-c411t-b1ff401fbf86a52926c7740cf220fc9f353ab99e1a4e64ce66b7f99cb03af9203
container_end_page 106
container_issue 2
container_start_page 106
container_title Mikrochimica acta (1966)
container_volume 187
creator Li, Yu
Wen, Qiu-Lin
Liu, An-Yong
Long, Yunfei
Liu, Peng
Ling, Jian
Ding, Zhong-Tao
Cao, Qiu-E
description A hydrothermal method was applied to the synthesis of green-emitting gold nanoclusters (Au NCs) which are shown to be viable fluorescent probes for 4-nitrophenol (4-NP). The Au NCs were prepared by using thiol-β-cyclodextrin as a template. Under 365 nm excitation, their green fluorescence has a peak at 502 nm, with a narrow emission bandwidth of only 30 nm. The fluorescence and composition of the Au NCs were characterized and the mechanism of the nanocluster formation is discussed. Due to host-guest recognition of β-cyclodextrin and 4-NP, fluorescence is quenched. The probe can selectively recognize 4-NP among other nitrophenols. A fluorometric and colorimetric assay was developed for 4-NP that works in the 0.1 to 100 μM concentration range and has a detection limit of 90 nM (at 3σ). Graphical abstract Schematic representation of hydrothermal synthesis of green-emitting gold nanoclusters using thiol-β-cyclodextrin. Fluorescence is quenched and the absorption of the nanoclusters is increases in the presence of 4-nitrophenol.
doi_str_mv 10.1007/s00604-019-4090-5
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The Au NCs were prepared by using thiol-β-cyclodextrin as a template. Under 365 nm excitation, their green fluorescence has a peak at 502 nm, with a narrow emission bandwidth of only 30 nm. The fluorescence and composition of the Au NCs were characterized and the mechanism of the nanocluster formation is discussed. Due to host-guest recognition of β-cyclodextrin and 4-NP, fluorescence is quenched. The probe can selectively recognize 4-NP among other nitrophenols. A fluorometric and colorimetric assay was developed for 4-NP that works in the 0.1 to 100 μM concentration range and has a detection limit of 90 nM (at 3σ). Graphical abstract Schematic representation of hydrothermal synthesis of green-emitting gold nanoclusters using thiol-β-cyclodextrin. 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subjects Analytical Chemistry
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Colorimetry
Cyclodextrins
Fluorescence
Fluorescent indicators
Gold
Investigations
Microengineering
Nanochemistry
Nanoclusters
Nanotechnology
Nitrophenol
Original Paper
Synthesis
Thiols
title One-pot synthesis of green-emitting gold nanoclusters as a fluorescent probe for determination of 4-nitrophenol
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