Direct visualization of the formation of single-molecule conjugated copolymers
Direct visualization of the formation of single-molecule conjugated copolymers
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DOI：
10.1126/science.1117990
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发表时间：
2005-11-11
期刊：
影响因子：
56.9
通讯作者：
Abouelwafa, AM
中科院分区：
文献类型：
--
作者：
Sakaguchi, H;Matsumura, H;Abouelwafa, AM
两种不同的噻吩单体在碘覆盖的金表面上进行电化学聚合，产生了具有不同电子结构的高度组装的共轭共聚物。扫描隧道显微镜显示了几种连接类型的图像：双块，三块和多块。单链共轭共聚物在表面表现出反常的摆动运动。该技术提供了在单分子尺度上理解不同单体共聚过程的可能性，以及通过可控电聚合在表面上构建单分子超晶格的可能性。
Electrochemical polymerization of two different kinds of thiophene monomers on an iodine-covered gold surface created highly assembled conjugated copolymers with different electronic structures. A scanning tunneling microscope revealed images of several linkage types: diblock, triblock, and multiblock. The single strand of conjugated copolymers exhibited an anomalous swinging motion on the surface. This technique presents the possibility of understanding the copolymerization process from the different monomers on the single-molecular scale and of building single-molecule superlattices on a surface through controlled electropolymerization.