The guest-dependent thermal response of the flexible MOF Zn2(BDC)2(DABCO).
The guest-dependent thermal response of the flexible MOF Zn2(BDC)2(DABCO) (1) has been studied. A series of temperature-dependent single crystallographic analyses revealed inherent structural thermal responses of 1. The guest-free framework 1 exhibited interesting thermal responses including anisotropic thermal expansion (negative thermal expansion (NTE) along the a- and b-axes, positive thermal expansion (PTE) along the c-axis) and disorder-order phase transition. In addition, inclusion of guest molecules (DMF and benzene) brought distinct thermal responses to 1 from host-guest interactions. 1·4DMF showed altered thermal responses, presenting disorder-order phase transitions at a higher temperature and PTE along the a- and b-axes. Meanwhile, 1·3benzene displayed a quite different type of thermal response such as a hinge like motion (breathing) without a symmetry change.
Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 790-784, Republic of Korea. kkim@postech.ac.kr.
Yonghwi
Y
Kim
Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 790-784, Republic of Korea. kkim@postech.ac.kr.
Ritesh
R
Haldar
Energy Materials Laboratory, Korea Institute of Energy Research, Daejeon, 305-343, Republic of Korea.
Hyunuk
H
Kim
Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 790-784, Republic of Korea. kkim@postech.ac.kr and Department of Chemistry, Pohang University of Science and Technology, Pohang, 790-784, Republic of Korea.
Jaehyoung
J
Koo
Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 790-784, Republic of Korea. kkim@postech.ac.kr and Department of Chemistry, Pohang University of Science and Technology, Pohang, 790-784, Republic of Korea and Division of Advanced Materials Science, Pohang University of Science and Technology, Pohang, 790-784, Republic of Korea.
Kimoon
K
Kim