CAJ | 학술논문

富勒烯与功能分子之间的电荷作用已经被广泛应用于功能性器件的构筑中.这些功能器件的性能与电极表面的薄膜排布结构有着密切关系.因此,研究电极表面的富勒烯和功能分子的组装结构对这些器件的构筑和功能的发挥有着重要意义.本文利用电化学扫描隧道显微镜技术,在HClO4溶液中系统研究了C60分子与有机电子给体-π-受体分子C16H33O-I3CNQ[Z-β-(5-hexadecyloxy-1,3,3-trimethy1-2-indolium)-α-cyano-4-styryl dicyanomethanide]在Au(111)电极表面的二维组装结构.研究发现:C16H33O-I3CNQ分子在Au(111)电极表面组装形成具有短程有序性的条陇状结构;而C60分子在C16H33O-I3CNQ模板之上组装形成了带状结构,C60分子带状结构的形成方向受到了C16H33O-I3CNQ分子中电子给体-π-受体部分排列结构的影响.C60分子与C16H33O-I3CNQ分子之间的π-π堆积作用和电荷转移作用对这种带状结构的形成有着密切关系.这一结果为利用富勒烯和功能分子之间的作用构筑功能器件提供了一种新的制备方法.
부륵희여공능분자지간적전하작용이경피엄범응용우공능성기건적구축중.저사공능기건적성능여전겁표면적박막배포결구유착밀절관계.인차,연구전겁표면적부륵희화공능분자적조장결구대저사기건적구축화공능적발휘유착중요의의.본문이용전화학소묘수도현미경기술,재HClO4용액중계통연구료C60분자여유궤전자급체-π-수체분자C16H33O-I3CNQ[Z-β-(5-hexadecyloxy-1,3,3-trimethy1-2-indolium)-α-cyano-4-styryl dicyanomethanide]재Au(111)전겁표면적이유조장결구.연구발현:C16H33O-I3CNQ분자재Au(111)전겁표면조장형성구유단정유서성적조롱상결구;이C60분자재C16H33O-I3CNQ모판지상조장형성료대상결구,C60분자대상결구적형성방향수도료C16H33O-I3CNQ분자중전자급체-π-수체부분배렬결구적영향.C60분자여C16H33O-I3CNQ분자지간적π-π퇴적작용화전하전이작용대저충대상결구적형성유착밀절관계.저일결과위이용부륵희화공능분자지간적작용구축공능기건제공료일충신적제비방법.
Fullerene has been extensively used in functional devices requiring electron transfer between fullerene and functional molecules.The investigation of multi-component assembly structures of fullerene and functional molecules on electrode surfaces will benefit the fabrication of fullerene based nanodevices as well as the study of their fundamental physical and chemical properties.The two dimensional(2D)self-assembly structure of C60 and the donorπ-acceptor molecule Z-β-(5-hexadecyloxy-1,3,3-trimethyl-2-indolium)-a-cyano-4-styryl dicyanomethanide(C16H33O13CNQ)on an Au(111)electrode surface was investigated by electrochemical scanning tunneling microscopy(ECSTM)in HClO4.The C16H33O-13CNQ molecules self-organized into a short-ranged ordered structure on the Au(111)surface.C60 molecules formed band-like assembly structures templated by the C16H33O-I3CNQ adlayer.The orientation of the C60 band structure is controlled by the arrangement of the donor-π-acceptor moieties.π-πstacking interactions and charge transfer between C60 and C16H33O-I3-I3CNQ may contribute to the formation of the C60 band-like assembly.The results reported here are expected to provide a new approach for the fabrication of fullerene films and functional devices.