NDLI: Syntheses, structures, photoluminescence, photocatalysis, and photoelectronic effects of 3D mixed high-connected metal–organic frameworks based on octanuclear and dodecanuclear secondary building units

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Yang, Yan Ma, Jian-fang Yang, Jin Liu, Bing-kun Du, Peng
Description	Author Affiliation: Du P ( Key Lab of Polyoxometalate Science, Department of Chemistry, Northeast Normal University, Changchun 130024, People's Republic of China.)
Abstract	Four novel metal–organic frameworks (MOFs) based on high-nuclear metal carboxylate clusters, namely, $[Zn_{4}(L)_{2}(μ_{3}-OH)_{2}(H_{2}O)_{1.5}]·2H_{2}O$ (1), $[Zn_{5}Na(L)_{2}(μ_{3}-OH)_{4}(CH_{3}CH_{2}O)(H_{2}O)_{2}]$ (2), $[Cd_{4}(L)_{2}(BIME)_{0.5}(μ_{3}-OH)_{2}(H_{2}O)_{1.5}]·2H_{2}O$ (3), and $[Zn_{4}(L)_{2}(BET)_{0.5}(μ_{3}-OH)_{2}(H_{2}O)]$ (4), where $H_{3}L$ = (3,5-dicarboxyl-phenyl)-(4-(2′-carboxyl-phenyl)-benzyl)ether, BET = 1,1′-(2′-oxybis(ethane-2,1-diyl))bis(1,2,4-triazol-1-yl), BIME = 1,2-bis(imidazol-1-yl)ethane, have been synthesized under hydrothermal conditions. In 1, each planar octanuclear zinc cluster $[Zn_{8}(μ_{3}-OH)_{8}(CO_{2})_{12}(H_{2}O)_{3}]$ is linked by twelve L anions to give an unusual (3,12)-connected framework with $(4^{3})_{2}(4^{20}·6^{28}·8^{18})$ topology. In 2, dodecanuclear heterometallic clusters $[Zn_{10}Na_{2}(μ_{3}-OH)_{8}(CO_{2})_{12}(CH_{3}CH_{2}O)_{2}(H_{2}O)_{4}]$ are surrounded by twelve L anions to form a (3,12)-connected net with the same topology as 1. However, 3 exhibits a rare (3,14)-connected $(4^{3})(3^{2}4)(3^{4}·4^{20}·5^{14}·6^{34}·7^{11}·8^{8})$ net based on octanuclear cadmium cluster $[Cd_{8}(BIME)_{2}(μ_{3}-OH)_{4}(CO_{2})_{12}(H_{2}O)_{4}]·2H_{2}O$ as a 14-connected node and $H_{3}L$ as a 3-connected node. In 4, each octanuclear zinc cluster $[Zn_{8}(BET)_{2}(μ_{3}-OH)_{4}(CO_{2})_{12}(H_{2}O)_{2}]$ is linked by twelve L anions to furnish a (3,14)-connected net with the same topology as 3. The optical energy gaps and photoluminescence were investigated for the compounds. Moreover, compounds 1–4 exhibit good photocatalytic activities for degradation of methylene blue (MB) under UV irradiation and show good stability towards UV photocatalysis. In addition, 1 and 4 display a photocurrent density under several on–off cycles of illumination.
ISSN	14779226
Issue Number	5
Volume Number	42
e-ISSN	13645447
Journal	Dalton Trans.
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2013-02-07
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Carboxylic Acids Chemistry Coordination Complexes Chemical Synthesis Zinc Catalysis Crystallography, X-Ray Luminescent Measurements Methylene Blue Molecular Conformation Ultraviolet Rays Journal Article Research Support, Non-U.S. Gov't
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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