文献类型：期刊文献

英文题名：Resonant Charge Transport in Conjugated Molecular Wires beyond 10 nm Range

作者：Kuang, Guowen[1];Chen, Shi-Zhang[2];Wang, Weihua[1];Lin, Tao[1];Chen, Keqiu[2];Shang, Xuesong[3,4];Liu, Pei Nian[3,4];Lin, Nian[1]

机构：[1]Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China;[2]Hunan Univ, Sch Phys & Elect, Dept Appl Phys, Changsha 410082, Hunan, Peoples R China;[3]East China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Meilong Rd 130, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Inst Fine Chem, Meilong Rd 130, Shanghai 200237, Peoples R China

年份：2016

卷号：138

期号：35

起止页码：11140

外文期刊名：JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

收录：;EI(收录号：20163702800192);WOS:【SCI-EXPANDED(收录号:WOS:000382901800019)】；

基金：This work was supported by the Hong Kong RGC (16301415, N_HKUST601/15) and the National Natural Science Foundation of China (Projects 11274105, 21421004, 21561162003, and 21190033).

语种：英文

外文关键词：Nanowires - Wire

摘要：Using a scanning tunneling microscope, we measured high-bias conductance of single polyporphyrin molecular wires with lengths from 1.3 to 13 nm. We observed several remarkable transport characteristics, including multiple sharp conductance peaks, conductances as high as 20 nS in wires with lengths of >10 nm, and nearly length-independent conductance (attenuation <0.001 angstrom(-1)). We carried out first-principles simulations on myriad metal molecule metal junctions. The simulations revealed that the measured conductance is coherent resonant transport via a delocalized molecular orbital.