期刊
DALTON TRANSACTIONS
卷 42, 期 37, 页码 13590-13598出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3dt51203g
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资金
- NSF of China [20931005, 91022004]
- Doctoral Program of Higher Education of China [20096101110005]
- NSF of Shaanxi, China [2009JZ001]
Three new solvent-directed three-dimensional (3D) lead(II) coordination polymers, [Pb-2(L)(2)](n) (1), [Pb-3(L)(3)](n) (2) and [Pb(L)]center dot H2O (3) [H3L = 2-(pyridine-2-yl)-1H-imidazole-4,5-dicarboxylic acid], have been synthesized solvothermally. As influenced by different solvent systems, compounds 1 and 3 exhibit varying architectures from a multi-nodal 3,3,4,4-connected to a uninodal 3-connected net, while 2 with helices represents a binodal 3,4-connected topological net. Moreover, 3 possesses a micropore which is decorated with pyridyl systems and uncoordinated carboxylate oxygen atoms. In addition, the small-sized and highly polar pores enable 3 to attract CO2 strongly, leading to a high sorption heat for CO2 and significant selectivity for CO2 over H-2 and N-2 at 293 K. The luminescent behaviors and emissive lifetimes of 1-3 are also discussed.
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