Supramolecular interactions induced hinge-like motion of a metal-organic framework accompanied by anisotropic thermal expansion

被引：35

作者：

Zhang, Lei ^{[1
,2
]}

Kuang, Xiaofei ^{[1
]}

Wu, Xiaoyuan ^{[1
]}

Yang, Wenbin ^{[1
]}

Lu, Canzhong ^{[1
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

DALTON TRANSACTIONS | 2014年 / 43卷 / 19期

基金：

中国国家自然科学基金;

关键词：

NEGATIVE LINEAR COMPRESSIBILITY; FLEXIBILITY; NETWORKS;

D O I：

10.1039/c3dt53580k

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A novel three-dimensional metal-organic framework (MOF), Ag-4(tpt)(4){delta-[Mo8O26]}center dot 1.5H(2)O (A) (tpt = 2,4,6-tris(4-pyridyl)-1,3,5-triazine), possesses a ths-type topology with the hinge deformation mode. The single-crystal X-ray diffraction study shows that A and the dehydrated phase Ag-4(tpt)(4){delta-[Mo8O26]} (B) display distinct anisotropic thermal expansion with expansion in the b direction but contraction in the ac plane. This rare area negative thermal expansion (NTE) behavior is attributed to the hinged structure model and the supramolecular interactions (argentophilic interaction, pi-pi interaction) that act as the microscopic driving forces. In addition, supramolecular interactions also play a key role in thermochromic behavior of compound A.

引用

页码：7146 / 7152

页数：7

共 47 条

[1] Negative thermal expansion [J].