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

^*Korresponderande författare för detta arbete

Forskningsoutput: Tidskriftsbidrag › Artikel › Vetenskaplig › Peer review

37 Citeringar (Scopus)

Sammanfattning

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.

Originalspråk	Engelska
Sidor (från-till)	1962-1966
Antal sidor	5
Tidskrift	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volym	136
Nummer	PC
DOI	https://doi.org/10.1016/j.saa.2014.10.117
Status	Publicerad - 5 feb. 2015
Externt publicerad	Ja
MoE-publikationstyp	A1 Tidskriftsartikel-refererad

Finansiering

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

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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.",

keywords = "Amino acid, Fluorescence enhancement, Glutamate, Keywords Graphene, Quantum dot",

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AU - Dadmehr, Mehdi

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KW - Quantum dot

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

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