Mono- and bilayered lead(II)-bpno polymers with unusual low energy emission properties (bpno=4,4′-bipyridine N,N′-dioxide)

被引：46

作者：

Xu, YQ ^{[1
]}

Yuan, DQ ^{[1
]}

Han, L ^{[1
]}

Ma, E ^{[1
]}

Wu, MY ^{[1
]}

Lin, ZZ ^{[1
]}

Hong, MC ^{[1
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fujian 350002, Peoples R China

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2005年 / 11期

关键词：

lead complexes; 4,4 '-bipyridine N,N '-dioxide; coordination polymers; phosphorescence;

D O I：

10.1002/ejic.200400921

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of 4,4'-bipyridine N,N'-dioxide (bpno) and lead(II) nitrate with or without dicyanamido ions (dca) in aqueous solution yielded polymeric complexes {Pb-2(bpno)(4)(dca)(2)(-)(NO3)(2)Pb-2(bpno)(4)(NO3)(4)center dot 5H(2)O}(n) (1) and {Pb(bpno)(NO3)(2)(center dot) H2O}, (2), respectively. The single-crystal X-ray analyses show that the structures of both complexes consist of dinuclear Pb-II units which are bridged through bpno ligands in novel modes to extend their topologies. Compound 1 exhibits a bilayered rhombus grid, while 2 displays a monolayered rhombus grid. The different excitations of solid samples of 1 and 2, at room temperature, produced intense emission bands which are almost the same in appearance with peak maxima at 616 nm and 617 nm, respectively. Both low-energy emissions were determined to be phosphorescence by their long decay lifetime at room temperature. (c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005.

引用

页码：2054 / 2059

页数：6

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