结构定义的石墨烯纳米带的边缘功能化用于调节自组装结构
Ashok Keerthi1,2,3, Boya Radha2,3, Daniele Rizzo4
1Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany.
Journal of the American Chemical Society
|November 4, 2017
概括
研究人员使用特定单元功能化了石墨烯纳米带 (GNR),使其能够控制自我组装. 这一突破可以为高级材料设计编程GNR的超分子架构.
科学领域:
- 材料科学
- 有机化学
- 纳米技术
背景情况:
- 石墨烯纳米带 (GNR) 具有独特的电子和光学特性.
- 控制GNR边缘功能对于定制其属性和应用至关重要.
- 底层合成可以精确控制GNR的结构和尺寸.
研究的目的:
- 为了实现由下至上合成的GNR的边缘功能化,使用氨酸和氨酸/氨酸单胺单元.
- 研究边缘功能化对GNR自组装行为的影响.
- 探索通过功能单元调编程超分子架构的可能性.
主要方法:
- 含基的聚烯前体的木合物.
- 对于GNR形成的分子内氧化循环脱.
- 使用MALDI-TOF MS,FT-IR,拉曼,XPS和AFM进行表征.
主要成果:
- 用目标单位成功实现GNR的边缘功能化.
- 通过光谱和质谱分析证实了替代的高效率.
- AFM 发现用烯单一胺 (PMI) 功能化的 GNR 形成了一个独特的矩形网络,证明了模块化的自组装.
结论:
- 边缘功能化是控制GNR自组装的可行策略.
- 调整功能单元允许编程GNR的超分子架构.
- 这项工作为设计具有定制结构和功能的先进纳米材料开辟了道路.
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