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Issue 20, 2021
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Fluorometric discrimination of tyrosine isomers based on the inner filter effect of chiral Au nanoparticles on MoS2 quantum dots

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Abstract

A fluorescent chiral sensor is proposed based on the inner filter effect (IFE) of chiral Au nanoparticles (AuNPs) on MoS2 quantum dots (MoS2 QDs), which can be used for the discrimination of the isomers of tyrosine (Tyr). L-Tyrosine (L-Tyr) can induce obvious agglomeration of the chiral AuNPs, leading to an attenuated IFE of the chiral AuNPs and greatly restored fluorescence of the MoS2 QDs, and thus the enantioselective recognition of the Tyr isomers can be achieved. Also, L-Tyr but not D-Tyr induced agglomeration of the chiral AuNPs is confirmed by the larger association constant between L-Tyr and the chiral sensor.

Graphical abstract: Fluorometric discrimination of tyrosine isomers based on the inner filter effect of chiral Au nanoparticles on MoS2 quantum dots

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Article information


Submitted
27 Jan 2021
Accepted
15 Apr 2021
First published
16 Apr 2021

Anal. Methods, 2021,13, 2290-2296
Article type
Paper

Fluorometric discrimination of tyrosine isomers based on the inner filter effect of chiral Au nanoparticles on MoS2 quantum dots

Q. Zhao, D. Wu, Z. Yin, W. Cai, H. Zhou and Y. Kong, Anal. Methods, 2021, 13, 2290
DOI: 10.1039/D1AY00145K

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