Dual Functional Molecular Imprinted Polymer-Modified Organometal Lead Halide Perovskite: Synthesis and Application for Photoelectrochemical Sensing of Salicylic Acid

This work reports the synthesis of dual functional molecularly imprinted polymer (MIP)-modified organometal lead halide perovskite (CH3NH3PbI3) and its application for photoelectrochemical (PEC) bioanalysis of salicylic acid (SA). Specifically, the CH3NH3PbI3 was encapsulated into the MIPs via a sim...

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Published inAnalytical chemistry (Washington) Vol. 91; no. 15; pp. 9356 - 9360
Main Authors Yang, Xiaoyu, Gao, Yuan, Ji, Zhengping, Zhu, Li-Bang, Yang, Chen, Zhao, Ying, Shu, Yun, Jin, Dangqin, Xu, Qin, Zhao, Wei-Wei
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 06.08.2019
Subjects
Biosensors
Chemical synthesis
Chemistry
electrochemistry
electrodes
encapsulation
Feasibility studies
glass
Imprinted polymers
indium tin oxide
Indium tin oxides
Lead
Lead compounds
Light
lighting
Metal halides
molecular imprinting
Perovskites
photochemistry
Polymerization
Polymers
Salicylic acid
Selectivity
Sensitivity analysis
Stability analysis
Tin
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ISSN0003-2700
1520-6882
1520-6882
DOI10.1021/acs.analchem.9b01739

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Summary:This work reports the synthesis of dual functional molecularly imprinted polymer (MIP)-modified organometal lead halide perovskite (CH3NH3PbI3) and its application for photoelectrochemical (PEC) bioanalysis of salicylic acid (SA). Specifically, the CH3NH3PbI3 was encapsulated into the MIPs via a simple thermal polymerization process on the indium tin oxide (ITO) glass, and the as-obtained MIPs/CH3NH3PbI3/ITO electrode was characterized by various techniques, which revealed that the MIPs could not only stabilize CH3NH3PbI3 but also improve the electron–hole separation efficiency of CH3NH3PbI3 under light illumination. In the detection of model analyte SA, the PEC sensor, with numerous amounts of recognition sites to SA, exhibited desirable performance in terms of good sensitivity, selectivity, stability, and feasibility for real sample analysis. This work not only featured the use of MIPs/CH3NH3PbI3 for PEC detection of SA but also provided a new horizon for the design and implementation of functional polymers/perovskite materials in the field of PEC sensors and biosensors.
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ISSN:0003-2700
1520-6882
1520-6882
DOI:10.1021/acs.analchem.9b01739