Bunker Bruce C, Huber Dale L, Kushmerick James G, Dunbar Timothy, Kelly Michael, Matzke Carolyn, Cao Jianguo, Jeppesen Jan O, Perkins Julie, Flood Amar H, Stoddart J Fraser
Sandia National Laboratories, Albuquerque, New Mexico 87185, USA.
Langmuir. 2007 Jan 2;23(1):31-4. doi: 10.1021/la0615793.
Tethered supramolecular machines represent a new class of active self-assembled monolayers in which molecular configurations can be reversibly programmed using electrochemical stimuli. We are using these machines to address the chemistry of substrate surfaces for integrated microfluidic systems. Interactions between the tethered tetracationic cyclophane host cyclobis(paraquat-p-phenylene) and dissolved pi-electron-rich guest molecules, such as tetrathiafulvalene, have been reversibly switched by oxidative electrochemistry. The results demonstrate that surface-bound supramolecular machines can be programmed to adsorb or release appropriately designed solution species for manipulating surface chemistry.
束缚型超分子机器代表了一类新型的活性自组装单分子层，其中分子构型可以通过电化学刺激进行可逆编程。我们正在使用这些机器来研究集成微流控系统中基底表面的化学性质。束缚型四阳离子环番主体环双（对二茂铁基对亚苯基）与溶解的富π电子客体分子（如四硫富瓦烯）之间的相互作用已通过氧化电化学进行了可逆切换。结果表明，表面结合的超分子机器可以被编程为吸附或释放经过适当设计的溶液物种，以操纵表面化学性质。
