Understanding the Photoelectrochemistry of Covalently Grafted Ionic Liquid–Graphene Nanosheets toward NADH Detection,ACS Applied Electronic Materials

当前位置： X-MOL 学术 › ACS Appl. Electron. Mater. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Understanding the Photoelectrochemistry of Covalently Grafted Ionic Liquid–Graphene Nanosheets toward NADH Detection
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2021-09-02 , DOI: 10.1021/acsaelm.1c00537
Prasenjit Bhunia ₁ , Kingshuk Dutta ₂

Affiliation

A completely unprecedented photoelectrochemical detection of β-nicotinamide adenine dinucleotide (NADH), using a covalently grafted imidazolium ionic liquid (IL) on reduced graphene oxide (RGO) nanosheets, has been explored in this study. Importantly, the developed hybrid probe is devoid of any metal or metal oxide nanoparticles, which are generally employed in photoelectrochemical detectors. The covalent grafting of the 1-(3-aminopropyl)-3-methylimidazolium bromide IL, and simultaneous removal of oxygen-containing functionalities from graphene oxide, was achieved in situ in a single step at 145–150 °C. The interesting photoelectrochemical behavior of the IL–RGO toward detection of NADH at an applied potential of +0.2 V has been demonstrated as a proof of concept. It was noted that the electron transfer kinetics of NADH oxidation got enhanced due to the presence of photogenerated holes and the grafted imidazolium moiety. One potential application of the proposed material can be the estimation of bioconversion of organic molecules, in which NADH is a cofactor.

中文翻译：

了解共价接枝离子液体-石墨烯纳米片对 NADH 检测的光电化学

本研究探索了一种完全前所未有的 β-烟酰胺腺嘌呤二核苷酸 (NADH) 光电化学检测方法，该方法使用共价接枝的咪唑离子液体 (IL) 在还原氧化石墨烯 (RGO) 纳米片上进行。重要的是，开发的混合探针不含任何通常用于光电化学检测器的金属或金属氧化物纳米颗粒。1-(3-氨基丙基)-3-甲基咪唑溴化物 IL 的共价接枝，同时从氧化石墨烯中去除含氧官能团，是在 145-150°C 下一步原位实现的。IL-RGO 在 +0.2 V 外加电位下检测 NADH 的有趣光电化学行为已被证明是概念的证明。注意到由于光生空穴的存在和接枝的咪唑鎓部分，NADH 氧化的电子转移动力学得到增强。所提出材料的一个潜在应用可以是估计有机分子的生物转化，其中 NADH 是辅助因子。

更新日期：2021-09-28

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11