Interaction of biopolymers with graphene for bio-electronic applications

Author:

Bayoumy Ahmed M.,A. Ibrahim Medhat,Osman Ahmed,Abdelmoneim Ahmed

Abstract

AbstractMolecular modelling concepts always prove to be an efficient technique for studying the interaction between various substances prior to experimental work. They were utilized for investigating the interaction of chitosan (Cs) and carboxymethyl cellulose (CMC) biopolymers with a modified graphene structure (G). Geometry optimization calculations were carried out using PM6 method. Results illustrate that the proposed interactions are all stable; however, the interaction site has no role in the resulting energy values. The calculated energies for the G-CMC interactions are quite lower than those for the G-Cs ones indicating quite higher stability for the former group. On contrary to energy, the proposed interaction active site has a significant part in determining total dipole moment (TDM) and hence reactivity of the structures. The calculated quantitative structure-activity relationship (QSAR) parameters show that the interaction of graphene with these biopolymers lowers its hydrophobicity. Modification of Cs and CMC with graphene has a significant positive impact on enhancing their electrical features. The resulting bandgap of the proposed structures is lower than half of their original values. Bandgap values of the G-CMC proposed structures are quite lower than those of the G-Cs ones. An experimental trial was carried out by printing a sixty-layer simple electrode of both biocomposite inks via InkJet printing technique. Then, Sheet resistance and charge mobility measurements were conducted. Results demonstrate that the sheet resistance of the G-Cs printed electrode is about five times higher than that of the G-CMC one. Such result was confirmed by the measured Hall Effect measurement which showed that the charge mobility in the G-CMC electrode is much greater than that in the G-Cs one. Both theoretical and experimental parts agree that the G-CMC biocomposite has much more electrical conductivity than the G-Cs, proposing it as a potential candidate for bio-electronic applications.

Funder

National Research Centre Egypt

Publisher

Springer Science and Business Media LLC

Subject

Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3