手性DAD三联体分子中电子供体（D）和电子受体（A）部分的偏置依赖性可视化。

Bias-dependent visualization of electron donor (D) and electron acceptor (A) moieties in a chiral DAD triad molecule.

作者信息

Miura Atsushi, Chen Zhijian, Uji-I Hiroshi, De Feyter Steven, Zdanowska Magdalena, Jonkheijm Pascal, Schenning Albertus P H J, Meijer E W, Würthner Frank, De Schryver Frans C

机构信息

Katholieke Universiteit Leuven, Department of Chemistry, Celestijnenlaan 200 F, B-3001 Leuven, Belgium.

出版信息

J Am Chem Soc. 2003 Dec 10;125(49):14968-9. doi: 10.1021/ja037407z.

DOI:10.1021/ja037407z

PMID:14653714

Abstract

The 2D crystal lattice structure and bias-dependent contrast of a chiral electron donor-acceptor-donor triad system, composed of two oligo(p-phenylene vinylene) electron donors and a perylenediimide electron acceptor (OPV4-PDI-OPV4), have been studied by means of scanning tunneling microscopy (STM) at the liquid-graphite interface. OPV4-PDI-OPV4 is ordered in rows and forms a well-ordered 2D crystal lattice structure. The electrical properties of the donor and acceptor parts are distinguished by the contrast in bias-dependent STM imaging.

摘要

通过在液-石墨界面的扫描隧道显微镜（STM）研究了由两个低聚（对亚苯基乙烯基）电子供体和一个苝二酰亚胺电子受体（OPV4-PDI-OPV4）组成的手性电子供体-受体-供体三元体系的二维晶格结构和偏压依赖对比度。OPV4-PDI-OPV4呈行排列并形成有序的二维晶格结构。供体和受体部分的电学性质通过偏压依赖STM成像中的对比度来区分。