Using Molecular Level Modification To Tune the Conductivity of Graphene Papers

• DOI: 10.1021/jp304374r
• Publication Date: 2012-08-02T15:20:59Z
• Authors: Jingquan Liu; Rui Wang; Liang Cui; Jianguo Tang; Zhen Liu; Qingshan Kong; Wenrong Yang; Justin Gooding
• Keywords: 02 engineering and technology; 0210 nano-technology

Graphene's excellent electrical conductivity benefits from its highly conjugated structure. Therefore, the manipulation of graphene's electronic and mechanical properties should be realized by controlled destruction in-sheet conjugation. Here, we report graphene papers, at molecular level, via either covalent bonding or π–π stacking interactions using monofunctional bifunctional molecules. The papers can tailored with controllable around 100 to below 0.001 S/cm. conjugation system monoaryl diazonium salts (MDS) resulted in a tunable decrease paper conductivity. However, when was modified aryl (BDS), more subtle observed. It is suggested that modification BDS linker showed changes because between-sheet electron communication, thus boosting collective Consequently, bipyrene terminal wire (BPMW) also synthesized used modify sheets interactions. BPMW afforded better than those MDS