U-disk portable photoelectrochemical sensor based on bifunctional poly (o-phenylenediamine) for on-site detection of erythromycin

被引：8
作者：
Zheng, Qi [1 ]
Chen, Yang [1 ]
Cao, Yuyan [1 ]
He, Yuhui [1 ]
Lu, Kening [1 ]
Jia, Nengqin [1 ]
机构：
[1] Shanghai Normal Univ, Shanghai Key Lab Rare Earth Funct Mat, Joint Int Res Lab Resource Chem, Educ Minist,Key Lab Resource Chem,Shanghai Frontie, Shanghai 200234, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2024年 / 408卷
基金：
中国国家自然科学基金;
关键词：
Erythromycin; Photoelectrochemical sensor; Portable; Molecular imprinting; Poly(o-phenylenediamine); WSe2; LIQUID-CHROMATOGRAPHY; BAND-GAP; LAYER; NANOPARTICLES; CONDUCTIVITY; MACROLIDES; PLASMA; WSE2;
D O I：
10.1016/j.snb.2024.135531
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Developing portable sensing platform with robust signal intensity is essential for on -site detection. Here, a bifunctional poly(o-phenylenediamine) (PoPD)-involved portable photoelectrochemical (PEC) sensor is proposed for detecting erythromycin (Ery). Firstly, the PoPD polymer-semiconductor acts as a molecularly imprinted polymer for specific recognition of Ery and simultaneously serves as a key PEC-active component for constructing WSe2_ x nanosheets/PoPD p-n heterojunction to enhance the PEC response. Secondly, a greatly simplified PEC sensing platform is developed utilizing a household flashlight and a lightweight U-disk workstation that connects to a smartphone via Bluetooth. The portable PEC sensor achieves high sensitivity with an excellent linear relationship in the range of 0.01-200 mu M. It has a low detection limit of 3.9x10-3 mu M (S/N = 3) and exhibits great stability, selectivity, and reproducibility. This work not only highlights the use of photoactive polymer semiconductors in the design of novel signal-enhancement PEC sensors, but also showcases an efficient portable sensing platform for potential on -site and real-time detection.
引用
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页数：8
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