Novel Fluorescence Sensor Based on All-Inorganic Perovskite Quantum Dots Coated with Molecularly Imprinted Polymers for Highly Selective and Sensitive Detection of Omethoate

2018 ◽  
Vol 10 (45) ◽  
pp. 39056-39063 ◽  
Author(s):  
Shuyi Huang ◽  
Manli Guo ◽  
Jiean Tan ◽  
Yuanyuan Geng ◽  
Jinyi Wu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Molecularly Imprinted Polymers ◽  
Fluorescence Sensor ◽  
Sensitive Detection ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Inorganic Perovskite ◽  
Perovskite Quantum Dots

scholarly journals Deposition of CdTe quantum dots on microfluidic paper chips for rapid fluorescence detection of pesticide 2,4-D

The Analyst ◽  
2019 ◽  
Vol 144 (4) ◽  
pp. 1282-1291 ◽  
Author(s):  
Zhong Zhang ◽  
Xin Ma ◽  
Mengfan Jia ◽  
Bowei Li ◽  
Jianhui Rong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Fluorescence Detection ◽  
Molecularly Imprinted Polymers ◽  
Cdte Quantum Dots ◽  
Sensitive Detection ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Specific Recognition

Novel fluorescent microfluidic paper chips were developed by the combination of molecularly imprinted polymers and microfluidic paper chips with CdTe quantum dots for the specific recognition and sensitive detection of the pesticide 2,4-D.

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.

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