Continuous Electrical Conductivity Variation in M3(Hexaiminotriphenylene)2 (M = Co, Ni, Cu) MOF Alloys

被引：266

作者：

Chen, Tianyang ^{[1
]}

Dou, Jin-Hu ^{[1
]}

Yang, Luming ^{[1
]}

Sun, Chenyue ^{[1
]}

Libretto, Nicole J. ^{[2
]}

Skorupskii, Grigorii ^{[1
]}

Miller, Jeffrey T. ^{[2
]}

Dinca, Mircea ^{[1
]}

机构：

[1] MIT, Dept Chem, Cambridge, MA 02139 USA

[2] Purdue Univ, Davidson Sch Chem Engn, W Lafayette, IN 47907 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2020年 / 142卷 / 28期

基金：

美国国家科学基金会;

关键词：

X-RAY PHOTOELECTRON; METAL-ORGANIC FRAMEWORK; ABSORPTION-EDGE; SPECTROSCOPY; COMPLEXES; EPR; NICKEL;

D O I：

10.1021/jacs.0c04458

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report on the continuous fine-scale tuning of band gaps over 0.4 eV and of the electrical conductivity of over 4 orders of magnitude in a series of highly crystalline binary alloys of two-dimensional electrically conducting metal-organic frameworks M-3(HITP)(2) (M = Co, Ni, Cu; HITP = 2,3,6,7,10,11-hexaiminotriphenylene). The isostructurality in the M-3(HITP)(2) series permits the direct synthesis of binary alloys (MxM'(3-x))(HITP) 2 (MM' = CuNi, CoNi, and CoCu) with metal compositions precisely controlled by precursor ratios. We attribute the continuous tuning of both band gaps and electrical conductivity to changes in free-carrier concentrations and to subtle differences in the interlayer displacement or spacing, both of which are defined by metal substitution. The activation energy of (CoxNi3-x)(HITP)(2) alloys scales inversely with an increasing Ni percentage, confirming thermally activated bulk transport.

引用

页码：12367 / 12373

页数：7

共 46 条

[11] Thin Film Thermoelectric Metal-Organic Framework with High Seebeck Coefficient and Low Thermal Conductivity [J].