A Dynamically Nanoporous Metal-Organic Framework Functional Properties
3D nanoporous coordination framework [Ni2(nic)4(H2O)]n (nic=Nicotinic acid) was obtained hydrothermally from a mixture of NiCl2.6H2O and 3-cyanopyridine. X-ray single crystal analysis revealed that it consists of “mushroom-shaped” channels along a axis suitable for gas storage. N2-adsorption studies at 77 K revealed a Langmuir surface area of 200 m2/g and a pore volume of 0.12 cm3/g. The compound shows dynamic dehydration and rehydration behaviors with the formation of 0D coordination [Ni(nic)2(H2O)4], accompanied by crystal-to-crystal transformation. The structural transformation significantly changes the character of magnetic exchange interactions and gas storage.
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
X. Huang et al., "A Dynamically Nanoporous Metal-Organic Framework Functional Properties", Advanced Materials Research, Vols. 239-242, pp. 3150-3155, 2011