2D Conductive Covalent Organic Frameworks with Abundant Carbonyl Groups for Electrochemical Sensing

• DOI: 10.1021/acssensors.2c02014
• Publication Date: 2022-10-21T00:15:26Z
• Authors: Kai Niu; Yuying Zhang; Jiping Chen; Xianbo Lu
• Keywords: Covalent organic framework

Due to their permanent porosity, robust chemical stability, and tunable structure, covalent organic frameworks (COFs) are very attractive in the application of energy storage, catalysis, sorption, sensing. However, low conductivity COFs severely restricts electrochemical Here, an aza-fused π-conjugated with abundant carbonyl groups (COF1) was synthesized deployed as electrode materials sensing for first time. The current response acetylcholinesterase biosensor based on COF1 increases three times when compared without COF1. effects signal enhancement were proved depth by a series characterization comparison experiments prepared COF2 groups. results demonstrated that exposed active sites can promote effective immobilization bioactivity preserving enzyme molecules contribute enrichment analytes. Together good derived from fully extended 2D aromatized system, all which improve performance. COF1-based exhibited fast speed, high sensitivity, selectivity practicability, stability organophosphorus pesticide detection be promising tool rapid onsite pesticides environment.