Rotation of a single molecule within a supramolecular bearing

被引：348
作者：
Gimzewski, JK
Joachim, C
Schlittler, RR
Langlais, V
Tang, H
Johannsen, I
机构：
[1] IBM Corp, Div Res, Zurich Res Lab, CH-8803 Ruschlikon, Switzerland
[2] CNRS, CEMES, F-31055 Toulouse, France
[3] Riso Natl Lab, Condensed Matter Phys & Chem Dept, DK-4000 Roskilde, Denmark
来源：
SCIENCE | 1998年 / 281卷 / 5376期
关键词：
D O I：
10.1126/science.281.5376.531
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Experimental visualization and verification of a single-molecule rotor operating within a supramolecular bearing is reported. Using a scanning tunneling microscope, single molecules were observed to exist in one of two spatially defined states Laterally separated by 0.26 nanometers. One was identified as a rotating state and the other as an immobilized state. Calculations of the energy barrier for rotation of these two states show that it is below the thermal energy at room temperature for the rotating state and above it for the immobilized state.
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页码：531 / 533
页数：3
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