Selective recognition of Glutamate based on fluorescence enhancement of graphene quantum dot

Morteza Hosseini; Hossein Khabbaz; Amin Shiralizadeh Dezfuli; Mohammad Reza Ganjali; Mehdi Dadmehr

doi:10.1016/j.saa.2014.10.117

Selective recognition of Glutamate based on fluorescence enhancement of graphene quantum dot

Morteza Hosseini^*
, Hossein Khabbaz
, Amin Shiralizadeh Dezfuli
, Mohammad Reza Ganjali
, Mehdi Dadmehr

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

37 Citations (Scopus)

Abstract

Graphene quantum dots (GQDs) have successfully been utilized as an efficient nano-sized fluorescence chemosensor to detect selectively Glutamate (Glu) in Tris-HCl buffer solution (pH = 9). The fluorescence emission spectrum of graphene quantum dots was at about 430 nm. The study showed that fluorescence intensity of the quantum dot gradually enhanced with increase in concentration of Glutamate and any change in fluorescence intensity was directly proportional to the concentration of Glutamate. Under optimum conditions, the linear range for the detection of Glutamate was 1.6 × 10^-7 M to 1.0 × 10^-5 M with a detection limit of 5.2 × 10^-8 M. The sensor showed high selectivity toward Glutamate in comparison with other amino acids.

Original language	English
Pages (from-to)	1962-1966
Number of pages	5
Journal	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume	136
Issue number	PC
DOIs	https://doi.org/10.1016/j.saa.2014.10.117
Publication status	Published - 5 Feb 2015
Externally published	Yes
MoE publication type	A1 Journal article-refereed

Funding

The authors are grateful to the Research Council of University of Tehran for the financial support of this work.

Keywords

Amino acid
Fluorescence enhancement
Glutamate
Keywords Graphene
Quantum dot

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10.1016/j.saa.2014.10.117

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title = "Selective recognition of Glutamate based on fluorescence enhancement of graphene quantum dot",

abstract = "Graphene quantum dots (GQDs) have successfully been utilized as an efficient nano-sized fluorescence chemosensor to detect selectively Glutamate (Glu) in Tris-HCl buffer solution (pH = 9). The fluorescence emission spectrum of graphene quantum dots was at about 430 nm. The study showed that fluorescence intensity of the quantum dot gradually enhanced with increase in concentration of Glutamate and any change in fluorescence intensity was directly proportional to the concentration of Glutamate. Under optimum conditions, the linear range for the detection of Glutamate was 1.6 × 10-7 M to 1.0 × 10-5 M with a detection limit of 5.2 × 10-8 M. The sensor showed high selectivity toward Glutamate in comparison with other amino acids.",

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AU - Dezfuli, Amin Shiralizadeh

AU - Ganjali, Mohammad Reza

AU - Dadmehr, Mehdi

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AB - Graphene quantum dots (GQDs) have successfully been utilized as an efficient nano-sized fluorescence chemosensor to detect selectively Glutamate (Glu) in Tris-HCl buffer solution (pH = 9). The fluorescence emission spectrum of graphene quantum dots was at about 430 nm. The study showed that fluorescence intensity of the quantum dot gradually enhanced with increase in concentration of Glutamate and any change in fluorescence intensity was directly proportional to the concentration of Glutamate. Under optimum conditions, the linear range for the detection of Glutamate was 1.6 × 10-7 M to 1.0 × 10-5 M with a detection limit of 5.2 × 10-8 M. The sensor showed high selectivity toward Glutamate in comparison with other amino acids.

KW - Amino acid

KW - Fluorescence enhancement

KW - Glutamate

KW - Keywords Graphene

KW - Quantum dot

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JF - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

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Selective recognition of Glutamate based on fluorescence enhancement of graphene quantum dot

Abstract

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Keywords

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