Multifunctional Fourfold Interpenetrating Diamondoid Network: Gas Separation and Fabrication of Pall
Multifunctional Fourfold Interpenetrating Diamondoid Network: Gas Separation and Fabrication of Palladium Nanoparticles.
A fourfold interpenetrating diamondoid network, [{[Ni(cyclam)](2)(mtb)}(n)]8n H(2)O4n DMF (1) (MTB=methanetetrabenzoate, DMF=dimethylformamide), has been assembled from [Ni(cyclam)][ClO(4)](2) (cyclam=1,4,8,11-tetraazacyclotetradecane) and methanetetrabenzoic acid (H(4)MTB) in DMF/H(2)O (7:3, v/v) in the presence of triethylamine (TEA). Despite the high-fold interpenetration, 1 generates 1D channels that are occupied by water and DMF guest molecules. Solid 1, after removal of guest molecules, exhibits selective gas adsorption behavior for H(2), CO(2), and O(2) rather than N(2) and CH(4), suggesting possible applications in gas separation technologies. In addition, solid 1 can be applied in the fabrication of small Pd (2.0+/-0.6 nm) nanoparticles without any extra reducing or capping agent because a Ni(II) macrocyclic species incorporated in 1 reduces Pd(II) ions to Pd(0) on immersion of 1 in the solution of Pd(NO(3))(2)2 H(2)O in MeCN at room temperature.
Cheon YE, Suh MP.
Department of Chemistry, Seoul National University, Seoul 151-747, Republic of Korea, Fax: (+82) 2-886-8516.