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Ultra-sensitive boscalid sensors based on a β-cyclodextrin modified perfluorinated copper phthalocyanine field-effect transistor.

Authors :
Zhang, Yunpeng
Kuang, Junhua
Dong, Jicheng
Shi, Longxian
Li, Qingyuan
Zhang, Bingjie
Shi, Wei
Huang, Xin
Zhu, Zhiheng
Ma, Yongqiang
Guo, Yunlong
Liu, Yunqi
Source :
Journal of Materials Chemistry C; 10/7/2021, Vol. 9 Issue 37, p12877-12883, 7p
Publication Year :
2021

Abstract

The increasing use of pesticides has raised concerns about the risks of exposure to pesticides. Rapid, simple and sensitive detection of pesticides is still a challenge in the current analytical technology. Herein, a perfluorinated copper phthalocyanine (F<subscript>16</subscript>CuPc) organic field-effect transistor (OFET) modified by β-cyclodextrin (β-CD) was used to detect boscalid molecules in solution. As a molecular carrier, β-CD will capture boscalid to form an inclusion complex. The hydroxyl group in β-CD and the carbonyl group in boscalid form a dipole–dipole interaction with F<subscript>16</subscript>CuPc, which induces more carriers in the device channel, which finally manifests as a significant increase in the maximum current of the device. When using β-CD as the modification layer, the detection limit of the device can be as low as 2.40 × 10<superscript>−11</superscript> g L<superscript>−1</superscript>, which is 5 orders of magnitude lower than the internationally permitted MRL value. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20507526
Volume :
9
Issue :
37
Database :
Complementary Index
Journal :
Journal of Materials Chemistry C
Publication Type :
Academic Journal
Accession number :
152765882
Full Text :
https://doi.org/10.1039/d1tc02171k