Structure and functionality in a new {Zn3[W(CN)8]2(DPNDI)}∞ hybrid porous coordination polymer Katarzyna Jędrzejowska 1 , Jędrzej Kobylarczyk, 2 Damian Jędrzejowski, 1 Beata Nowicka, 1 Dariusz Matoga, 1 Tadeusz Muzioł, 3 Robert Podgajny 1 1 Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland 2 Institute of Nuclear Physics PAN, Radzikowskiego 152, 31-342 Krakow, Poland 3 Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland Porous coordination polymers, 1 due to presence of various specific building blocks, might show either robust or flexible architectures, which underlays their application in gas separation, 2 storage and condensation, 3 selective adsorption of guest molecules, water treatment etc. 1 as well as design and construction of advance multifunctional switchable networks involving magnetic and optical properties. 4 In this work, we present a new 3-D I 2 O 1 hybrid porous coordination polymer (PCP) Zn 3 W 2 4DPNDI composed of 2-D cyanido-bridged Zn 3 W 2 layers pillared by organic 4-DPNDI linkers, a 4-pyridyl derivative of naphthalenediimide π -acidic core. Zn 3 W 2 layers exhibit 12- and 24-membered rings, the latter ones providing meshes. This material has a 3D porous space of interlinked channels. The voids ( ca. 45% of the crystal volume), are originally filled with the native DMA solvent molecules that might be removed and replaced by other solvents. Following the appropriate preliminary conditioning, the dynamic vapour sorption (DVS) indicated notable and calculable reversible sorption of H 2 O, MeOH, or CHCl 3 solvent vapours involving the formation of modified architectures, whereas n -hexane and toluene uptake is negligible. Additionally, the N 2 and CO 2 sorption isotherms obtained using a volumetric gas adsorption technique confirmed flexibility of the network.
Figure 1. Schematic illustration of structural flexibility upon desolvation/solvation processes in Zn 3 W 2 4DPNDI framework and representative H 2 O sorption/desorption isotherms. References 1. S. Kitagawa, R. Kitaura, S. Noro, Angew.Chem.Int.Ed. , 2004 , 43 , 2334–2375. 2. A. R. Jeong, J. W. Shin, J. H. Jeong, S. Jeoung, H. R. Moon, S. Kang, K. S. Min, Inorg. Chem. , 2020 , 59 , 15987–15999. 3. M. Inukai, M. Tamura, S. Horike, M. Higuchi, S. Kitagawa, K. Nakamura, Angew.Chem.Int.Ed. , 2018 , 57 , 8687-8690 4. M. Meneses-Sánchez, L. Piñeiro-López, T. Delgado, C. Bartual-Murgui, M. C. Muñoz, P. Chakraborty, J.A. Real, J. Mater. Chem. C , 2020 , 8, 1623-1633
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