Document Detail


Syntheses, structures, photoluminescence, photocatalysis, and photoelectronic effects of 3D mixed high-connected metal-organic frameworks based on octanuclear and dodecanuclear secondary building units.
MedLine Citation:
PMID:  23138531     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
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 (), [Zn(5)Na(L)(2)(μ(3)-OH)(4)(CH(3)CH(2)O)(H(2)O)(2)] (), [Cd(4)(L)(2)(BIME)(0.5)(μ(3)-OH)(2)(H(2)O)(1.5)]·2H(2)O (), and [Zn(4)(L)(2)(BET)(0.5)(μ(3)-OH)(2)(H(2)O)] (), 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 , 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 , 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 . However, 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 , 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 . The optical energy gaps and photoluminescence were investigated for the compounds. Moreover, compounds exhibit good photocatalytic activities for degradation of methylene blue (MB) under UV irradiation and show good stability towards UV photocatalysis. In addition, and display a photocurrent density under several on-off cycles of illumination.
Authors:
Peng Du; Yan Yang; Jin Yang; Bing-Kun Liu; Jian-Fang Ma
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-9
Journal Detail:
Title:  Dalton transactions (Cambridge, England : 2003)     Volume:  -     ISSN:  1477-9234     ISO Abbreviation:  Dalton Trans     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101176026     Medline TA:  Dalton Trans     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Key Lab of Polyoxometalate Science, Department of Chemistry, Northeast Normal University, Changchun 130024, People's Republic of China. yangjinnenu@yahoo.com.cn jianfangma@yahoo.com.cn.
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