Continuous negative-to-positive tuning of thermal expansion achieved by controlled gas sorption in porous coordination frameworks

被引：45

作者：

Auckett, Josie E. ^{[1
]}

Barkhordarian, Arnold A. ^{[2
]}

Ogilvie, Stephen H. ^{[2
]}

Duyker, Samuel G. ^{[2
]}

Chevreau, Hubert ^{[1
]}

Peterson, Vanessa K. ^{[1
]}

Kepert, Cameron J. ^{[2
]}

机构：

[1] Australian Nucl Sci & Technol Org, Australian Ctr Neutron Scattering, Lucas Heights, NSW 2234, Australia

[2] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia

来源：

NATURE COMMUNICATIONS | 2018年 / 9卷

基金：

澳大利亚研究理事会;

关键词：

METAL-ORGANIC FRAMEWORKS; CARBON-DIOXIDE CAPTURE; PRUSSIAN BLUE ANALOGS; DESIGN; ZERO; COMPRESSIBILITY; FUNCTIONALITY; DIFFRACTION; CRYSTAL; CYANIDE;

D O I：

10.1038/s41467-018-06850-6

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Control of the thermomechanical properties of functional materials is of great fundamental and technological significance, with the achievement of zero or negative thermal expansion behavior being a key goal for various applications. A dynamic, reversible mode of control is demonstrated for the first time in two Prussian blue derivative frameworks whose coefficients of thermal expansion are tuned continuously from negative to positive values by varying the concentration of adsorbed CO2. A simple empirical model that captures site-specific guest contributions to the framework expansion is derived, and displays excellent agreement with the observed lattice behaviour.

引用

页数：5

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