五基[2,3-b]基,是有机薄膜晶体管的六基类型
Ming L Tang1, Stefan C B Mannsfeld, Ya-Sen Sun
1Department of Chemistry, Stanford University, Stanford, California 94305, USA.
Journal of the American Chemical Society
|January 8, 2009
概括
化学家们合成了一种新型的六烯样分子,五烯[2,3-b]烯,为有机电子提供低频段间隙. 这一突破使得先进的有机薄膜晶体管 (OTFT) 的开发成为可能,这些晶体管具有有前途的电荷传输特性.
科学领域:
- 有机化学 有机化学
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 六和较大的化芳是具有挑战性的合成目标.
- 扩展的pi结合系统对于有机电子应用至关重要.
研究的目的:
- 为了合成和表征一种类似六的分子,五[2,3-b]thiophene.
- 为了研究它的电子和光学特性.
- 制造和测试基于这种新材料的有机薄膜晶体管 (OTFT).
主要方法:
- 五二烯[2,3-b]二烯的化学合成.
- 频谱表征 (UV-Vis,NMR) 进行.
- 使用原子力显微镜 (AFM) 制造顶接触OTFT和表征.
主要成果:
- 五基[2,3-b]基因被成功合成并分离为稳定的紫黑粉末.
- 该分子具有较低的最高占有分子轨道 - 最低未占有分子轨道 (HOMO-LUMO) 间隙 (1.75 eV) 和光带间隙 (1.58 eV).
- OTFT显示出0.574cm2/Vs的移动性,具有树突薄膜生长.
结论:
- 五[2,3-b]烯代表了扩展多环芳的合成的重大进步.
- 其有利的电子和光学特性使其成为有机半导体应用的有希望的候选者.
- 该材料的稳定性和可加工性是设备制造的优势.
相关概念视频
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