Fluorescence quenching between unbonded graphene quantum dots and gold nanoparticles upon simple mixing

Yi Liu; Wei Quan Loh; Arundithi Ananthanarayanan; Cheng Yang; Peng Chen; Chenjie Xu

doi:10.1039/c4ra06408a

Fluorescence quenching between unbonded graphene quantum dots and gold nanoparticles upon simple mixing

Yi Liu, Wei Quan Loh, Arundithi Ananthanarayanan, Cheng Yang, Peng Chen, Chenjie Xu^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

28 Citations (Scopus)

Abstract

Fluorescence quenching is an interesting phenomenon that has been widely utilized in developing fluorescence-based sensors. However, most of the research focuses on the quencher and fluorophore in the bonded states. The fluorescence quenching between two unbonded nanostructures has been rarely studied. In this work, we observed and studied the fluorescence-quenching phenomenon between the unbonded gold nanoparticles (Au NPs) and graphene quantum dots (GQDs) upon simple mixing. We observed that the fluorescence of GQDs gradually decreased with the increase of Au NP concentration. This fluorescence quenching between unbonded GQDs and Au NPs obeys the nonlinear form of the Stern-Volmer model, which suggests that the process contains both static and dynamic quenching. © 2014 the Partner Organisations.

Original language	English
Pages (from-to)	35673-35677
Journal	RSC Advances
Volume	4
Issue number	67
Online published	4 Aug 2014
DOIs	https://doi.org/10.1039/c4ra06408a
Publication status	Published - 2014
Externally published	Yes

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title = "Fluorescence quenching between unbonded graphene quantum dots and gold nanoparticles upon simple mixing",

abstract = "Fluorescence quenching is an interesting phenomenon that has been widely utilized in developing fluorescence-based sensors. However, most of the research focuses on the quencher and fluorophore in the bonded states. The fluorescence quenching between two unbonded nanostructures has been rarely studied. In this work, we observed and studied the fluorescence-quenching phenomenon between the unbonded gold nanoparticles (Au NPs) and graphene quantum dots (GQDs) upon simple mixing. We observed that the fluorescence of GQDs gradually decreased with the increase of Au NP concentration. This fluorescence quenching between unbonded GQDs and Au NPs obeys the nonlinear form of the Stern-Volmer model, which suggests that the process contains both static and dynamic quenching. {\textcopyright} 2014 the Partner Organisations.",

author = "Yi Liu and Loh, {Wei Quan} and Arundithi Ananthanarayanan and Cheng Yang and Peng Chen and Chenjie Xu",

year = "2014",

doi = "10.1039/c4ra06408a",

language = "English",

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pages = "35673--35677",

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T1 - Fluorescence quenching between unbonded graphene quantum dots and gold nanoparticles upon simple mixing

AU - Liu, Yi

AU - Loh, Wei Quan

AU - Ananthanarayanan, Arundithi

AU - Yang, Cheng

AU - Chen, Peng

AU - Xu, Chenjie

PY - 2014

Y1 - 2014

N2 - Fluorescence quenching is an interesting phenomenon that has been widely utilized in developing fluorescence-based sensors. However, most of the research focuses on the quencher and fluorophore in the bonded states. The fluorescence quenching between two unbonded nanostructures has been rarely studied. In this work, we observed and studied the fluorescence-quenching phenomenon between the unbonded gold nanoparticles (Au NPs) and graphene quantum dots (GQDs) upon simple mixing. We observed that the fluorescence of GQDs gradually decreased with the increase of Au NP concentration. This fluorescence quenching between unbonded GQDs and Au NPs obeys the nonlinear form of the Stern-Volmer model, which suggests that the process contains both static and dynamic quenching. © 2014 the Partner Organisations.

AB - Fluorescence quenching is an interesting phenomenon that has been widely utilized in developing fluorescence-based sensors. However, most of the research focuses on the quencher and fluorophore in the bonded states. The fluorescence quenching between two unbonded nanostructures has been rarely studied. In this work, we observed and studied the fluorescence-quenching phenomenon between the unbonded gold nanoparticles (Au NPs) and graphene quantum dots (GQDs) upon simple mixing. We observed that the fluorescence of GQDs gradually decreased with the increase of Au NP concentration. This fluorescence quenching between unbonded GQDs and Au NPs obeys the nonlinear form of the Stern-Volmer model, which suggests that the process contains both static and dynamic quenching. © 2014 the Partner Organisations.

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U2 - 10.1039/c4ra06408a

DO - 10.1039/c4ra06408a

M3 - RGC 21 - Publication in refereed journal

SN - 2046-2069

VL - 4

SP - 35673

EP - 35677

JO - RSC Advances

JF - RSC Advances

IS - 67

ER -

Fluorescence quenching between unbonded graphene quantum dots and gold nanoparticles upon simple mixing

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