Acyclic water tetramer and discrete (H2O)28 cluster with a novel topknot-shaped (H2O)24 cluster coexist in the voids of a Ag(I) polymeric solid

作者：Zhao, Qing-Hua; Chen, Jun; Zhu, Rui-Min; Li, Ming-Zhi; Dai, Jing-Cao; Luo, Geng-Geng^*

来源：Inorganic Chemistry Communications, 2012, 22: 182-186.

DOI：10.1016/j.inoche.2012.06.005

• (H2O)(28) cluster
• (H2O)(24) cluster
• Water tetramer
• Photoluminescence
• CIE-1931

Two kinds of discrete water clusters, acyclic water tetramer and larger (H2O)(28) cluster with a novel topknot-shaped (H2O)(24) core formed from lattice water molecules, are captured in the voids of a Ag(I) polymeric solid [Ag-4(bpda)(2)(bPP)(4)center dot 18H(2)O](n) (1) (where bpp = 1.3-bis(4-pyridyl)propane and H(2)bpda = 1,1'-biphenyl-2,2'-dicarboxylate acid). The centrosymmetric (H2O)(24) cluster is basically an assembly of two (H2O)(12) subunits and each subunit (H2O)(12) has the shape of cage-like water monodecamer hydrogen bonded to one water monomer. The lattice of a crystal host provides two different sizes of hydrophilic environments for stabilizing these clusters. Moreover, the thermogravimetric curve and photoluminescence spectra of 1 were discussed. 1 exhibits strong photoluminescence maximized at 495 nm upon 390 nm excitation at ambient temperature, of which the CIE chromaticity ordinate (x = 0.23, y = 0.42) is close to that of the green component.

• 出版日期2012-8
• 单位华侨大学