Metal-organic polymer enables efficient organic photoelectrochemical transistor biosensing

Biosens Bioelectron. 2024 Apr 27;257:116346. doi: 10.1016/j.bios.2024.116346. Online ahead of print.ABSTRACTThe field of organic photoelectrochemical transistor (OPECT) is newly emerged, with increasing efforts attempting to utilize its properties in biological sensing. Advanced materials with new physicochemical properties have proven important to this end. Herein, we report a metal-organic polymers-gated OPECT biosensing exemplified by Cuâ… -arylacetylide polymers (CuAs)-modulated poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) channel. Both the photoelectrochemical properties and gating capability of CuAs are explored and optimized for high-efficacy photogating. Morever, based on its inherent structure, the specific reaction between CuAs and sulfur ions (S2-) is revealed and S2--mediated microRNA-21 detection is realized by linking with nucleic acid amplification and alkaline phosphatase catalytic chemistry. This work introduces metal-organic polymers as gating materials for OPECT biosensing.PMID:38688230 | DOI:10.1016/j.bios.2024.116346
Source: Biosensors and Bioelectronics - Category: Biotechnology Authors: Source Type: research