Highly Conductive Topologically Chiral Molecular Knots as Efficient Spin Filters

被引：47

作者：

Zhang, Dan-Yang ^{[1
,2
,3
]}

Sang, Yutao ^{[4
,9
]}

Das, Tapan Kumar ^{[4
]}

Guan, Zhao ^{[5
,6
]}

Zhong, Ni ^{[5
,6
,7
]}

Duan, Chun-Gang ^{[5
,6
,7
]}

Wang, Wei ^{[1
,2
,3
]}

Fransson, Jonas ^{[10
]}

Naaman, Ron ^{[4
]}

Yang, Hai-Bo ^{[1
,2
,3
,8
]}

机构：

[1] East China Normal Univ, Sch Chem & Mol Engn, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China

[2] East China Normal Univ, Shanghai Frontiers Sci Ctr Mol Intelligent Synth, Sch Chem & Mol Engn, Shanghai 200062, Peoples R China

[3] East China Normal Univ, Chang Kung Chuang Inst, Sch Chem & Mol Engn, Shanghai 200062, Peoples R China

[4] Weizmann Inst Sci, Dept Chem & Biol Phys, IL-7610001 Rehovot, Israel

[5] East China Normal Univ, Key Lab Polar Mat & Devices MOE, Shanghai 200241, Peoples R China

[6] East China Normal Univ, State Key Lab Precis Spect, Shanghai 200241, Peoples R China

[7] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 237016, Shanxi, Peoples R China

[8] Inst Ecochongming, Shanghai 202162, Peoples R China

[9] Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China

[10] Uppsala Univ, Dept Phys & Astron, S-75236 Uppsala, Sweden

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2023年 / 145卷 / 49期

关键词：

SELECTIVITY; POLARIZATION;

D O I：

10.1021/jacs.3c08966

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Knot-like structures were found to have interesting magnetic properties in condensed matter physics. Herein, we report on topologically chiral molecular knots as efficient spintronic chiral material. The discovery of the chiral-induced spin selectivity (CISS) effect opens the possibility of manipulating the spin orientation with soft materials at room temperature and eliminating the need for a ferromagnetic electrode. In the chiral molecular trefoil knot, there are no stereogenic carbon atoms, and chirality results from the spatial arrangements of crossings in the trefoil knot structures. The molecules show a very high spin polarization of nearly 90%, a conductivity that is higher by about 2 orders of magnitude compared with that of other chiral small molecules, and enhanced thermal stability. A plausible explanation for these special properties is provided, combined with model calculations, that supports the role of electron-electron interaction in these systems.

引用

页码：26791 / 26798

页数：8

共 40 条

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