The guest-dependent thermal response of the flexible MOF Zn2(BDC)2(DABCO)

• DOI: 10.1039/c5dt03710g
• Publication Date: 2015-10-15T13:01:10Z
• Authors: Yonghwi Kim; Ritesh Haldar; Hyunuk Kim; Jaehyoung Koo; Kimoon Kim
• Keywords: DABCO; Negative Thermal Expansion

The guest-dependent thermal response of the flexible MOF Zn2(BDC)2(DABCO) (1) has been studied. A series temperature-dependent single crystallographic analyses revealed inherent structural responses 1. guest-free framework 1 exhibited interesting including anisotropic expansion (negative (NTE) along a- and b-axes, positive (PTE) c-axis) disorder-order phase transition. In addition, inclusion guest molecules (DMF benzene) brought distinct to from host-guest interactions. 1·4DMF showed altered responses, presenting transitions at a higher temperature PTE b-axes. Meanwhile, 1·3benzene displayed quite different type such as hinge like motion (breathing) without symmetry change.