Multifunctionality and crystal dynamics of a highly stable, porous metal-organic framework [Zn4O(NTB)2 |
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Authors: | Lee Eun Young Jang Seung Yeon Suh Myunghyun Paik |
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Institution: | Department of Chemistry, Seoul National University, Seoul 151-747, Republic of Korea. |
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Abstract: | A porous metal-organic framework Zn(4)O(NTB)(2)].3DEF.EtOH (1), in which (3,6)-connected nets are doubly interpenetrated to generate curved three-dimensional channels, has been prepared. Framework 1 exhibits high permanent porosity (Langmuir surface area, 1121 m(2)/g; pore volume, 0.51 cm(3)/cm(3)), high thermal stability (up to 430 degrees C), high hydrogen adsorption capacity (1.9 wt % at 77 K and 1 atm), selective organic guest binding ability (K(f)()( )(): MeOH > pyridine > benzene > dodecane), and guest-dependent blue luminescence (lambda(max) depending on guest identity). Most interestingly, the framework sustains single crystallinity even at 400 degrees C and 10(-)(5) Torr, and the framework components undergo reversible dynamics, mainly rotational motion, in response to removal and rebinding of the guest molecules. |
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