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具有优良溶液可加工性的功能化石墨烯纳米带

Yinjuan Huang1, Yiyong Mai1, Uliana Beser2

  • 1School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan RD, Shanghai 200240, China.

Journal of the American Chemical Society
|July 28, 2016
PubMed
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我们用聚乙烯氧化物 (PEO) 侧链合成无缺陷的石墨烯纳米带 (GNR). 这种功能化大大提高了GNR的分散性,并使高性能场效晶体管成为可能.

科学领域:

  • 材料科学
  • 纳米技术
  • 聚合物化学

背景情况:

  • 石墨烯纳米带 (GNR) 是一个有前途的半导体材料.
  • 用聚合物实现GNR功能是一个尚未探索的领域.
  • 提高GNR的分散性是GNR应用的关键.

研究的目的:

  • 为聚合物移植的GNR开发一个自下而上的溶液合成.
  • 研究聚乙烯氧化物 (PEO) 接种对GNR属性的影响.
  • 评估电子设备中功能化的GNR的性能.

主要方法:

  • 基因基因组的自下而上的溶液合成.
  • 将聚乙烯氧化物 (PEO) 侧链植入GNR.
  • 使用扫描探针显微镜进行表征.
  • 薄膜场效应晶体管 (FET) 的制造和测试.

主要成果:

  • 合成无缺陷的座椅GNR (宽度为1.0-1.7nm,长度为15-60nm) 带有1.3 eV的带隙.
  • 通过PEO接种在有机溶剂和水中实现了创纪录的GNR分散性 (∼1 mg mL-1).
  • 在水中观察到超分子螺旋纳米线的形成.

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  • 在石墨上展示了自组装的GNR单层.
  • 基于GNR的FET表现出高载体流动性 (∼0.3cm2V-1s-1).

    • 结论:

    • PEO接种显著提高了GNR的分散性和可处理性.
    • 聚合物功能化的GNR显示了自我组装和纳米线形成的潜力.
    • 这些功能化的GNR对下一代电子设备具有前景.