插层(化学)
生物电子学
生物传感器
佩多:嘘
光电流
纳米技术
材料科学
晶体管
DNA
光电子学
组合化学
化学
电压
物理
无机化学
生物化学
图层(电子)
量子力学
作者
Peng Ju,Yu-Yue Zhu,Tiantong Jiang,Ge Gao,Shiliang Wang,Xingwu Jiang,Yi‐Tong Xu,Xiaofan Zhai,Hong Zhou,Weiwei Zhao
标识
DOI:10.1016/j.bios.2023.115543
摘要
DNA intercalation has increasingly been studied for various scenario implementations due to the diverse functions of DNA/intercalators. Nascent organic photoelectrochemical transistor (OPECT) biosensing taking place in organic electronics and photoelectrochemical bioanalysis represents a promising technological frontier in the arena. In this work, we first devise DNA intercalation-enabled OPECT for miRNA detection with a superior gain up to 17100. Intercalation of [Ru(bpy)2dppz]2+ within the miRNA-initiated hybrid chain reaction (HCR)-derived duplex DNA is realized for producing anodic photocurrent upon light stimulation, causing the corresponding target-dependent alternation in gate voltage (VG) and hence the modulated channel current (IDS) of poly (3,4-ethylenedioxythiophene) doped with poly (styrene sulfonate) (PEDOT:PSS) under specific drain voltage (VDS) for quantitative miRNA-21 analysis, which shows a wide linear relationship and a low detection limit of 5.5 × 10−15 mol L−1. This study features the DNA intercalation-enabled organic electronics with superior gain and is envisaged to attract more attention to explore DNA adducts for innovative bioelectronics and biosensing, given the diverse DNA binders with multiple functions.
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