The molecule-electrode interface in single-molecule transistors

被引:138
作者
Yu, HB
Luo, Y
Beverly, K
Stoddart, JF
Tseng, HR
Heath, JR
机构
[1] CALTECH, Pasadena, CA 91125 USA
[2] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA
[3] Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USA
关键词
break junctions; differential conductance; molecular devices; molecule electrode contact; rotaxanes;
D O I
10.1002/anie.200352352
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
What's in the middle matters little! Differential conductance measurements made on single-molecule rotaxanes and their precursor dumbbells in transistors with platinum electrodes reflect the molecule-electrode contacts rather than the middle section of the molecules (see diagram; the color reflects the conductance, with dark corresponding to zero current). Interface states dominate electron transport. Molecular signatures are masked and even constitutional asymmetry in the molecule is difficult to detect.
引用
收藏
页码:5706 / 5711
页数:6
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