| Title | Stereoelectronic Effect-Induced Conductance Switching in Aromatic Chain Single-Molecule Junctions |
| Authors | Xin, Na Wang, Jinying Jia, Chuancheng Liu, Zitong Zhang, Xisha Yu, Chenmin Li, Mingliang Wang, Shuopei Gong, Yao Sun, Hantao Zhang, Guanxin Liu, Zhirong Zhang, Guangyu Liao, Jianhui Zhang, Deqing Guo, Xuefeng |
| Affiliation | Peking Univ, Coll Chem & Mol Engn, State Key Lab Struct Chem Unstable & Stable Speci, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China. Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China. Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. Peking Univ, Dept Elect, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China. Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan. Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China. Peking Univ, Coll Chem & Mol Engn, State Key Lab Struct Chem Unstable & Stable Speci, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China. Zhang, DQ (reprint author), Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China. Guo, XF (reprint author), Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China. |
| Keywords | Single molecule junction switch biphenyl stereoelectronic effect CONFORMATIONAL-CHANGES ELECTRONIC DEVICES CHARGE-TRANSPORT SOLAR-CELLS BIPHENYL TRANSISTORS MOIETIES |
| Issue Date | 2017 |
| Publisher | NANO LETTERS |
| Citation | NANO LETTERS.2017,17(2),856-861. |
| Abstract | Biphenyl, as the elementary unit of organic functional materials, has been widely used in electronic and optoelectronic devices. However, over decades little has been fundamentally understood regarding how the intramolecular conformation of biphenyl dynamically affects its transport properties at the single-molecule level. Here, we establish the stereoelectronic effect of biphenyl on its electrical conductance based on the platform of graphene-molecule single-molecule junctions, where a specifically designed hexaphenyl aromatic chain molecule is covalently sandwiched between nanogapped graphene point contacts to create stable single-molecule junctions. Both theoretical and temperature-dependent experimental results consistently demonstrate that phenyl twisting in the aromatic chain molecule produces different microstates with different degrees of conjugation, thus leading to stochastic switching between high- and low-conductance states. These investigations offer new molecular design insights into building functional single-molecule electrical devices. |
| URI | http://hdl.handle.net/20.500.11897/475449 |
| ISSN | 1530-6984 |
| DOI | 10.1021/acs.nanolett.6b04139 |
| Indexed | SCI(E) |
| Appears in Collections: | å å¦ä¸ å å å·¥ç¨ å¦é ¢ 信息科学技术学院 工学院 纳米器件物理与化学教育部重点实验室 |
