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Structures, photoluminescence and photocatalytic properties of three new metal–organic frameworks based on non-rigid long bridges.

Structures, photoluminescence and photocatalytic properties of three new metal–organic frameworks based on non-rigid long bridges.

Authors :
Dong-E Wang
Ke-Jian Deng
Kang-Le Lv
Cheng-Gang Wang
Source :
CrystEngComm. Jul2009, Vol. 11 Issue 7, p1442-1450. 9p.
Publication Year :
2009

Abstract

Three new metal–organic coordination polymers, [Cd3(5-NO2-bdc)2(5-NO2-bdcH)2(bpyo)2]n(1), [Mn(5-NO2-bdc)(bbim)]n(2) and {[Gd(5-NO2-bdc)(5-NO2-bdcH)](bpyo)0.5·2H2O}n(3) (5-NO2-bdcH2= 5-nitro-1,3-benzenedicarboxylic acid; bpyo = 4,4′-bipyridine-N,N′-dioxide; bbim = 1,1′-(1,4-butanediyl)bis(benzimidazole)), were obtained under hydrothermal conditions and characterized structurally. The networks exhibit a variety of topologies and coordination modes at the metal centers. Complex 1exhibits NaCl-type topology and contains the centrosymmetric trinuclear cluster SBU [Cd3(COO)4O2]. Complex 2adopts CsCl-type topology based on bimetallic cores and is the first example of compounds containing a cisbbim bridge. Moreover, complex 3possesses a 3D supramolecular framework by stronger contacts between 2D layers and non-rigid bpyo bridges. The thermal stabilities of 1–3, the photoluminescence properties of 1as well as the photocatalytic performance of 3were also examined, and the results indicated that 1seems to be a good candidate for novel hybrid inorganic–organic photoactive materials, especially, compound 3represents the rare example of coordination polymers with a 4f metal ion that exhibit good photocatalytic activity for dye degradation under UV light. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14668033
Volume :
11
Issue :
7
Database :
Academic Search Index
Journal :
CrystEngComm
Publication Type :
Academic Journal
Accession number :
43371284
Full Text :
https://doi.org/10.1039/b821263e