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

Journal of Materials Chemistry C, ISSN: 2050-7526, Vol: 9, Issue: 37, Page: 12877-12883
2021
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Article Description

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 (FCuPc) 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 FCuPc, 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 × 10g L, which is 5 orders of magnitude lower than the internationally permitted MRL value.

Bibliographic Details

Yunpeng Zhang; Bingjie Zhang; Yongqiang Ma; Junhua Kuang; Jicheng Dong; Longxian Shi; Qingyuan Li; Wei Shi; Xin Huang; Zhiheng Zhu; Yunlong Guo; Yunqi Liu

Royal Society of Chemistry (RSC)

Chemistry; Materials Science

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