合成含有基基烯 (基烯) 桥梁的铁乙醇及其在金电极上的表征
S P Dudek1, H D Sikes, C E Chidsey
1Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA.
Journal of the American Chemical Society
|August 17, 2001
概括
铁素终结的烯乙烯 (OPV) 甲基醇在黄金上形成了密集的单层. 这些寡合体由于它们的高合率,显示出作为分子线的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 有机电子 有机电子
背景情况:
- 基烯烯 (OPV) 衍生品正在研究它们的电子特性.
- 溶解组对于合成较长的寡合物和促进其加工至关重要.
- 黄金表面上的自组合单层 (SAM) 是研究分子电子学的关键平台.
研究的目的:
- 用于合成具有或没有有氧溶解组的铁终结OPV甲基醇.
- 为了研究这些OPV寡合体在黄金上的SAM中的自组装行为和包装.
- 评估OPV寡合体作为电子运输分子线的潜力.
主要方法:
- 烯单体的正交联合合成OPV寡合体.
- 在黄金基板上沉积OPV硫醇和乙醇混合SAM.
- 循环电压测量用于研究SAM的电子特性和包装.
- 计时电压测量以评估电子传输速率 (尽管发现该技术的速度太慢).
主要成果:
- 铁素终结OPV甲基醇,有或没有乙氧基,在黄金上形成包装良好的SAM.
- 乙氧替代剂增强溶解性,使更长的OPV寡合物的合成成为可能.
- 溶解群的位置不会阻碍寡合体在单层中包装.
- 通过OPV寡合体的电子传输速率高达35 Å,对于传统的时光强度计来说太快了.
结论:
- 在黄金上,OPV寡合体,无论溶解群,都会形成有序的SAM.
- OPV结构的高合性表明它们适合用于分子电线应用.
- 需要进一步的研究来准确测量这些系统中的快速电子转移速率.
相关概念视频
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