Increasing Applications of Graphite Thermoplastic Electrodes with Aryl Diazonium Grafting
Increasing Applications of Graphite Thermoplastic Electrodes with Aryl Diazonium Grafting
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DOI：
10.1002/celc.201901048
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发表时间：
2019-09-16
期刊：
影响因子：
4
通讯作者：
Henry, Charles S.
中科院分区：
文献类型：
--
作者：
Berg, Kathleen E.;Leroux, Yann R.;Henry, Charles S.
碳复合热塑性电极(TPE)由石墨和热塑性塑料组成，采用简单的溶剂辅助制造方法。热塑性弹性体具有高导电性、良好的电子转移动力学、低成本、可重复使用、易于图案化等优点，但由于其与聚甲基丙烯酸甲酯(PMMA)模板的溶剂相容性，目前仅用于水溶液中。有限的溶剂相容性阻碍了其应用范围和表面改性。在这里，环烯烃共聚物(COC)热塑性弹性体在玻璃模板中，可与其他溶剂相容。在乙腈中用芳基重氮盐接枝热塑性弹性体，首次对热塑性弹性体进行共价表面改性。用扫描电化学显微镜(SECM)对其进行了进一步的研究。通过点击化学方法，用二茂铁部分对TPE进行后官能化。重氮电接枝和点击化学修饰开辟了热塑性弹性体的未来研究和更广泛的应用。
Carbon composite thermoplastic electrodes (TPEs) consist of graphite and thermoplastic made using an easy, solvent-assisted fabrication. TPEs have the advantages of high conductivity, good electron transfer kinetics, low cost, reusability, and easy patterning, but have only been used with aqueous solvents due to solvent compatibility with the poly(methyl methacrylate) (PMMA) template. The limited solvent compatibility hinders the application range and surface modifications. Here, cyclic olefin copolymer (COC) TPEs in glass templates that are compatible with additional solvents are presented. TPEs are grafted with aryl diazonium salts in acetonitrile, showing covalent surface TPE modification for the first time. Further investigation is carried out with scanning electrochemical microscopy (SECM). The TPEs are post-functionalized with a ferrocene moiety via click chemistry. The diazonium electrografting and click chemistry modifications open up future studies and broader applications of TPEs.