当前位置：
X-MOL 学术
›
J. Am. Chem. Soc.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Quantum Interference-Controlled Conductance Enhancement in Stacked Graphene-like Dimers
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2022-08-05 , DOI: 10.1021/jacs.2c05909 Peihui Li 1 , Songjun Hou 2 , Bader Alharbi 2, 3 , Qingqing Wu 2 , Yijian Chen 1 , Li Zhou 1 , Tengyang Gao 4 , Ruihao Li 4 , Lan Yang 1 , Xinyue Chang 1 , Gang Dong 4 , Xunshan Liu 5, 6 , Silvio Decurtins 5 , Shi-Xia Liu 5 , Wenjing Hong 4 , Colin J Lambert 2 , Chuancheng Jia 1, 7 , Xuefeng Guo 1, 7
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2022-08-05 , DOI: 10.1021/jacs.2c05909 Peihui Li 1 , Songjun Hou 2 , Bader Alharbi 2, 3 , Qingqing Wu 2 , Yijian Chen 1 , Li Zhou 1 , Tengyang Gao 4 , Ruihao Li 4 , Lan Yang 1 , Xinyue Chang 1 , Gang Dong 4 , Xunshan Liu 5, 6 , Silvio Decurtins 5 , Shi-Xia Liu 5 , Wenjing Hong 4 , Colin J Lambert 2 , Chuancheng Jia 1, 7 , Xuefeng Guo 1, 7
Affiliation
|
Stacking interactions are of significant importance in the fields of chemistry, biology, and material optoelectronics because they determine the efficiency of charge transfer between molecules and their quantum states. Previous studies have proven that when two monomers are π-stacked in series to form a dimer, the electrical conductance of the dimer is significantly lower than that of the monomer. Here, we present a strong opposite case that when two anthanthrene monomers are π-stacked to form a dimer in a scanning tunneling microscopic break junction, the conductance increases by as much as 25 in comparison with a monomer, which originates from a room-temperature quantum interference. Remarkably, both theory and experiment consistently reveal that this effect can be reversed by changing the connectivity of external electrodes to the monomer core. These results demonstrate that synthetic control of connectivity to molecular cores can be combined with stacking interactions between their π systems to modify and optimize charge transfer between molecules, opening up a wide variety of potential applications ranging from organic optoelectronics and photovoltaics to nanoelectronics and single-molecule electronics.
中文翻译：
堆叠的类石墨烯二聚体中的量子干涉控制电导增强
堆叠相互作用在化学、生物学和材料光电子学领域具有重要意义，因为它们决定了分子及其量子态之间的电荷转移效率。以往的研究已经证明，当两个单体π-堆叠串联形成二聚体时，二聚体的电导率明显低于单体的电导率。在这里，我们提出了一个强烈的相反情况，即当两个蒽单体在扫描隧道微观断裂结中 π 堆叠形成二聚体时，与源自室温的单体相比，电导增加多达 25量子干涉。值得注意的是，理论和实验都一致表明，这种效应可以通过改变外部电极与单体核心的连通性来逆转。
更新日期：2022-08-05
中文翻译：
堆叠的类石墨烯二聚体中的量子干涉控制电导增强
堆叠相互作用在化学、生物学和材料光电子学领域具有重要意义，因为它们决定了分子及其量子态之间的电荷转移效率。以往的研究已经证明，当两个单体π-堆叠串联形成二聚体时，二聚体的电导率明显低于单体的电导率。在这里，我们提出了一个强烈的相反情况，即当两个蒽单体在扫描隧道微观断裂结中 π 堆叠形成二聚体时，与源自室温的单体相比，电导增加多达 25量子干涉。值得注意的是，理论和实验都一致表明，这种效应可以通过改变外部电极与单体核心的连通性来逆转。
京公网安备 11010802027423号