Preparation of TEMPO-modified PEDOT electrode via click reaction and its electrocatalytic properties for HMF oxidation

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers Pub Date : 2025-04-11 DOI:10.1016/j.reactfunctpolym.2025.106300

Haochen Wang, Xin Liu, Chenyang Ling, Zhenlu Shen, Meichao Li

引用次数: 0

Abstract

A novel TEMPO-modified poly(3,4-ethylenedioxythiophene) (PEDOT-T-TEMPO) electrode was prepared through click reaction between 4-(propargyloxy)-TEMPO and azide-functionalized poly(3,4-ethylenedioxythiophene). Successful modification of TEMPO on azide-functionalized PEDOT was verified by FTIR, SEM and cyclic voltammetry. PEDOT-T-TEMPO electrode exhibited high electrocatalytic activity for selective oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF), achieving HMF conversion of 92 % and selectivity towards DFF more than 99 %. In addition, PEDOT-T-TEMPO electrode showed excellent cyclic stability in CH₃CN solution. A plausible reaction mechanism for the conversion of HMF to DFF on PEDOT-T-TEMPO electrode with N-methylimidazole (NMI) as the base has been proposed.

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点击反应制备tempo修饰PEDOT电极及其对HMF氧化的电催化性能

通过4-（丙炔氧基）- tempo与叠氮化聚（3,4-乙烯二氧基噻吩）的咔嗒反应制备了一种新型tempo修饰聚（3,4-乙烯二氧基噻吩）（PEDOT-T-TEMPO）电极。通过红外光谱（FTIR）、扫描电镜（SEM）和循环伏安法验证了TEMPO在叠氮化PEDOT上的成功修饰。PEDOT-T-TEMPO电极对5-羟甲基糠醛（HMF）选择性氧化为2,5-二甲酰呋喃（DFF）具有较高的电催化活性，HMF的转化率达到92%，DFF的选择性超过99%。此外，PEDOT-T-TEMPO电极在CH3CN溶液中表现出良好的循环稳定性。提出了以n -甲基咪唑（NMI）为底物的PEDOT-T-TEMPO电极上HMF转化为DFF的合理反应机理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Reactive & Functional Polymers 工程技术-高分子科学

CiteScore

8.90

自引率

5.90%

发文量

259

审稿时长

27 days

期刊介绍： Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.