期刊
INORGANIC CHEMISTRY
卷 50, 期 16, 页码 7618-7624出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic200640g
关键词
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资金
- 973 Program [2007CB815301]
- National Science Foundation of China [21073192, 20733003, 20871114, 20801055]
- Science Foundation of CAS [KJCX2-YW-H20]
- Science Foundation of Fujian Province [2009HZ0006-1, 2006L2005]
Three novel coordination polymers, [Cd-5(HTTHA)(2)(Hpt)(4)(H2O)]center dot 4H(2)O (1; H(6)TTHA = 1,3,5-triazine-2,4,6-triamine hexaacetic acid, Hpt = pyridinium-4-thiolate), {[Cd-3(TTHA)(dps)(H2O)(3)](2)}center dot H2O (2), and [Zn-3(TTHA)(dps)-(H2O)]center dot 5H(2)O (3; dps =4,4'-dipyridylsulfide), have been synthesized by the flexible hexapodal acid H(6)TTHA and in-situ-generated Hpt and dps ligands from a 4,4'-dipyridyldisulfide (dpds) precursor through cleavage of both S-S and S-C(sp(2)) bonds and temperature-dependent chemical rearrangement under hydrothermal conditions. Polymers 2 and 3 exhibit 3D frameworks, while in 1, the extended 3D network can be described as 2D layers further bridged via H-bond interaction. Intriguingly, the three compounds have shown an unusual luminescence thermochromism. Upon decreasing the temperature from 298 to 10 K, the emission bands grow in intensity and change in color dramatically.
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