Robust Bioinspired Graphene Film via π–π Cross-linking

• DOI: 10.1021/acsami.7b07748
• Publication Date: 2017-07-06T20:18:53Z
• Authors: Hong Ni; Feiyu Xu; Antoni P. Tomsia; Eduardo Saiz; Lei Jiang; Qunfeng Cheng
• Keywords: Technology; 0306 Physical Chemistry (Incl. Structural); POLYMER NANOCOMPOSITES; Materials Science; 0904 Chemical Engineering; Materials Science, Multidisciplinary; 02 engineering and technology; MEMBRANES; 530; robust; conductive; NANOFILLER; COMPOSITES; bioinspired; π-conjugated; Nanoscience & Nanotechnology; CONDUCTIVITY; ULTRASTRONG; Multidisciplinary; Science & Technology; STABILITY; MECHANICAL-PROPERTIES; 540; OXIDE SHEETS; Science & Technology - Other Topics; CARBON NANOTUBE; 0210 nano-technology; pi-conjugated; graphene films; 0303 Macromolecular And Materials Chemistry

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 delocalized conjugated π-electron system, thus preserving graphene's excellent properties. Herein, we synthesized a molecule with pyrene groups on both ends long linear chain (AP-DSS) from 1-aminopyrene (AP) and disuccinimidyl suberate (DSS). The AP-DSS molecules used cross-link adjacent graphene nanosheets via π-π interfacial improve films. tensile strength toughness resultant were 4.1 6.4 times higher, respectively, than that pure rGO film. More remarkably, electrical conductivity showed simultaneous improvement, which is rare be achieved other kinds covalent or noncovalent functionalization. Such integration demonstrates advantage this work previously reported functionalization graphene.