Single Crystals of Electrically Conductive Two-Dimensional Metal-Organic Frameworks: Structural and Electrical Transport Properties

被引：271

作者：

Day, Robert W. ^{[1
]}

Bediako, D. Kwabena ^{[2
,4
]}

Rezaee, Mehdi ^{[3
]}

Parent, Lucas R. ^{[5
,6
]}

Skorupskii, Grigorii ^{[1
]}

Arguilla, Maxx Q. ^{[1
]}

Hendon, Christopher H. ^{[7
]}

Stassen, Ivo ^{[1
]}

Gianneschi, Nathan C. ^{[5
]}

Kim, Philip ^{[2
]}

Dinca, Mircea ^{[1
]}

机构：

[1] MIT, Dept Chem, Cambridge, MA 02138 USA

[2] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[3] Harvard Univ, John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA

[4] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[5] Northwestern Univ, Int Inst Nanotechnol, Dept Chem Mat Sci & Engn, Biomed Engn, Evanston, IL 60208 USA

[6] Univ Connecticut, Innovat Partnership Bldg, Storrs, CT 06269 USA

[7] Univ Oregon, Dept Chem & Biochem, Eugene, OR 97401 USA

来源：

ACS CENTRAL SCIENCE | 2019年 / 5卷 / 12期

基金：

美国国家科学基金会;

关键词：

30;

D O I：

10.1021/acscentsci.9b01006

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Crystalline, electrically conductive, and intrinsically porous materials are rare. Layered two-dimensional (2D) metal-organic frameworks (MOFs) break this trend. They are porous crystals that exhibit high electrical conductivity and are novel platforms for studying fundamentals of electricity and magnetism in two dimensions. Despite demonstrated applications, electrical transport in these remains poorly understood because of a lack of single crystal studies. Here, studies of single crystals of two 2D MOFs, Ni-3(HITP)(2) and Cu-3(HHTP)(2), uncover critical insights into their structure and transport. Conductivity measurements down to 0.3 K suggest metallicity for mesoscopic single crystals of Ni-3(HITP)(2), which contrasts with apparent activated conductivity for polycrystalline films. Microscopy studies further reveal that these MOFs are not isostructural as previously reported. Notably, single rods exhibit conductivities up to 150 S/cm, which persist even after prolonged exposure to ambient conditions. These single crystal studies confirm that 2D MOFs hold promise as molecularly tunable platforms for fundamental science and applications where porosity and conductivity are critical.

引用

页码：1959 / 1964

页数：6

共 29 条

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