DataVXACS Applied Materials & InterfacesPaper
journal article·2017-07-26

Robust Bioinspired Graphene Film via π–π Cross-linking

Hong Ni, Feiyu Xu, Antoni P. Tomsia, Eduardo Saiz, Lei Jiang, Qunfeng Cheng

ACS Applied Materials & Interfaces· Volume 9· Issue 29
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Source abstract

Abstract

Graphene composite films inspired by nacre are the subject of ongoing research efforts to optimize their properties for applications in flexible energy devices. Noncovalent interactions do not cause interruption of the delocalized conjugated π-electron system, thus preserving graphene's excellent properties. Herein, we synthesized a conjugated molecule with pyrene groups on both ends of a long linear chain (AP-DSS) from 1-aminopyrene (AP) and disuccinimidyl suberate (DSS). The AP-DSS molecules are used to cross-link adjacent graphene nanosheets via π-π interfacial interactions to improve properties of graphene films. The tensile strength and toughness of resultant graphene films were 4.1 and 6.4 times higher, respectively, than that of pure rGO film. More remarkably, the electrical conductivity showed a simultaneous improvement, which is rare to be achieved in other kinds of covalent or noncovalent functionalization. Such integration demonstrates the advantage of this work to previously reported noncovalent functionalization of graphene.
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Research context

NanomaterialsComposites

OpenAlex topics: Graphene research and applications · Graphene and Nanomaterials Applications · Supramolecular Self-Assembly in Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191, P. R. China

Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States

Department of Materials, Centre for Advanced Structural Ceramics, Imperial College London, London SW7 2AZ, U.K.

Funding

Program for New Century Excellent Talents in University · State Administration of Foreign Experts Affairs · Ministry of Education of the People's Republic of China · Fok Ying Tong Education Foundation · Aeronautical Science Foundation of China · National Natural Science Foundation of China · State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology

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