期刊
INORGANIC CHEMISTRY
卷 50, 期 22, 页码 11403-11411出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic2011666
关键词
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资金
- MOST [2007CB815304, 2010CB933501]
- National Natural Science Foundation of China [20873150, 20821061, 20973173, 50772113, 91022008]
- Chinese Academy of Sciences [KJCX2-EW-H01, KJCX2-YW-M319]
- Natural Science Foundation of Fujian Province [2007HZ0001-1, 2009-HZ0004-1, 2009HZ0006-1, 2006L2005]
Two new complexes [Cu-3(I)(L1)I-3] (1, L1 = 2,5-bis(4-pyridyl)-1,3,4-oxadiazole) and [Cu-3(I)(L2)12], (2, L2 = 2,5-bis(4-pyridyl)-1,2,4-triazolate) are controllably formed by using aqueous ammonia to regulate the pH value of the reaction involving CuI and L1. Interestingly, L2 of 2 is in situ generated from the ring transform of L1 when increase the pH value of the reaction. 1 exhibits 2-D layer, while 2 shows 3-D MOFs with a novel 3-nodal 4,4,5-connected net topology of an unprecedented Point (Schlafli) symbol: (4.5(2).6(2).7)(5(4).8(2))(4(3).5.6(6)). Although both 1 and 2 are built of CuI and similar ligands, different arrangements of CuI chains and ligands endow them with different physical properties. 1 displays a strong pure red luminescence emission, while 2 is nonluminescent and shows a broad absorption band covering the whole UV-vis-NIR spectrum range. The emissive excited states of 1 and the charge transitions of the optical absorption for 2 are solved by DFT calculations.
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