Electrochemiluminescent graphene quantum dots enhanced by MoS2 as sensing platform: a novel molecularly imprinted electrochemiluminescence sensor for 2-methyl-4-chlorophenoxyacetic acid assay

2017 ◽  
Vol 228 ◽  
pp. 107-113 ◽  
Author(s):  
Yukun Yang ◽  
Guozhen Fang ◽  
Xiaomin Wang ◽  
Fuyuan Zhang ◽  
Jingmin Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Molecularly Imprinted ◽  
Sensing Platform ◽  
Chlorophenoxyacetic Acid

Graphene Quantum Dots Modified Screen‐printed Electrodes as Electroanalytical Sensing Platform for Diethylstilbestrol

2019 ◽  
Vol 31 (5) ◽  
pp. 838-843 ◽  
Author(s):  
Ava Gevaerd ◽  
Craig E. Banks ◽  
Márcio F. Bergamini ◽  
Luiz Humberto Marcolino‐Junior
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Screen Printed Electrodes ◽  
Sensing Platform ◽  
Screen Printed

A sensing approach for dopamine determination by boronic acid-functionalized molecularly imprinted graphene quantum dots composite

2017 ◽  
Vol 423 ◽  
pp. 810-816 ◽  
Author(s):  
Xi Zhou ◽  
Xuexia Gao ◽  
Fengyan Song ◽  
Chunpeng Wang ◽  
Fuxiang Chu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Boronic Acid ◽  
Graphene Quantum Dots ◽  
Molecularly Imprinted ◽  
Dopamine Determination

A fluorometric assay for tyrosinase activity and its inhibitor screening based on graphene quantum dots

RSC Advances ◽  
2016 ◽  
Vol 6 (76) ◽  
pp. 72670-72675 ◽  
Author(s):  
X. E. Zhao ◽  
C. H. Lei ◽  
Y. H. Wang ◽  
F. Qu ◽  
S. Y. Zhu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Tyrosinase Activity ◽  
Fluorometric Assay ◽  
Pristine Graphene ◽  
Fluorescence Sensing ◽  
Inhibitor Screening ◽  
Sensing Platform ◽  
First Time

Pristine graphene quantum dots (GQDs) without any functionalization were used as probes to develop a sensitive and selective fluorescence sensing platform for the detection of tyrosinase (TYR) activity and its inhibitor screening for the first time.

scholarly journals Fluorescent Nanosensor based on Molecularly Imprinted Polymers Coated on Graphene Quantum Dots for Fast Detection of Antibiotics

2018 ◽  
Author(s):  
Tongchang Zhou ◽  
Arnab Halder ◽  
Yi Sun
Keyword(s):  
Quantum Dots ◽  
Fluorescence Intensity ◽  
Molecularly Imprinted Polymers ◽  
Limit Of Detection ◽  
Sol Gel ◽  
Graphene Quantum Dots ◽  
Carboxyl Groups ◽  
One Pot ◽  
Molecularly Imprinted ◽  
Imprinted Polymers

In this work, we firstly explored a mild, clean, and highly efficient approach for the synthesis of graphene quantum dots (GQDs). GQDs with carboxyl groups or amino groups, were prepared from one-pot environmentally friendly method assisted by hydrogen peroxide, respectively. It was proved that carboxyl groups played an important role in the fluorescence quenching. Based on these findings, we developed a novel fluorescent nanosensor by combining molecularly imprinted polymers (MIPs) with carboxyl functionalized GQDs for the determination of tetracycline (TC) in aqueous samples. The nanocomposite was prepared using a sol-gel process. GQDs-MIPs showed strong fluorescent emission at 410 nm when excited at 360 nm, which was subsequently quenched in the presence of TC. Under optimum conditions, the fluorescence intensity of GQDs-MIPs decreased in response to the increase of TC concentration with good linearity rage of 1.0-104 µg L-1. The limit of detection was determined to be 1 µg L-1. The fluorescence intensity of GQDs-MIPs was more strongly quenched by TC compared to the corresponding non-imprinted polymers, GQDs-NIPs. With the high sensitivity, the material was also successfully worked for the detection of TC in real spiked milk samples.

Sign in / Sign up

Export Citation Format

Share Document