Polyoxometalate immobilization in Cu{sup I}/Ag-pz porous coordination polymers: The influences of them on the structural properties of frameworks
- Key Laboratory of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, Jilin 130024 (China)
Three new high dimensional Cu{sup I}/Ag-pz porous coordination polymers (PCPs) with different Keggin polyoxometalate templates have been hydrothermally synthesized: [Cu{sup I}{sub 5}(pz){sub 6}Cl][HPMo{sup VI}{sub 10}Mo{sup V}{sub 2}O{sub 40}] (1) [Ag{sub 5}(pz){sub 7}(BW{sub 12}O{sub 40})] (2) and [Cu{sup I}{sub 5}(pz){sub 6}H(H{sub 2}W{sub 12}O{sub 40})].4H{sub 2}O (3) (pz=pyrazine). The choice of the particular Keggin POM templates is shown to influence the structural properties of the Cu/Ag PCPs. Compound 1 shows a Cl-bridged Cu-pz-Cl double layer, between which two kinds of [HPMo{sup VI}{sub 10}Mo{sup V}{sub 2}O{sub 40}]{sup 4-}(PMo{sub 12}) polyanions are located. Compound 2 presents a 3D Ag-pz framework with parallelogram-like voids, into which BW{sub 12}O{sub 40}{sup 5-} (BW{sub 12}) Keggin ions are incorporated. Compound 3 contains a Cu-pz cationic layer framework, between which are located [H(H{sub 2}W{sub 12}O{sub 40})]{sup 5-} (W{sub 12}) Keggin ions. Primary photocatalytic experiment indicates that compound 1 presents excellent photocatalytic activity. The photoluminescence properties and electrochemistry properties of the compounds are also discussed. -- Graphical abstract: The choice of the particular Keggin template is shown to influence the structural properties of the Cu/Ag PCPs. Their photocatalytic activities have been studied. Display Omitted highlights: > In this paper, three Keggin POM-templated metal-pyrazine frameworks are reported. > The choice of template can influence the structural properties of the frameworks. > Further, compound 1 exhibits excellent photocatalytic activity.
- OSTI ID:
- 21504068
- Journal Information:
- Journal of Solid State Chemistry, Vol. 184, Issue 5; Other Information: DOI: 10.1016/j.jssc.2011.03.030; PII: S0022-4596(11)00127-7; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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PHOTOLUMINESCENCE
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