Syntheses, structures and properties of a series of photochromic hybrids based on Keggin tungstophosphates

Syntheses, structures and properties of a series of photochromic hybrids based on Keggin tungstophosphates
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基于 Keggin 钨磷酸盐的一系列光致变色杂化物的合成、结构和性能

DOI:
10.1016/j.jssc.2009.01.037
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发表时间:
2009-05
影响因子:
3.3
通讯作者:
Liu, Mei-Ling
Liu, Mei-Ling
中科院分区:
化学3区
文献类型:
--
作者:
Zhang, Li-Zhi;Dong, Zhili;Gu, Wen;Liu, Xin;Li, Bing;Liu, Mei-Ling

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合成了三种Keggin钨磷酸盐与镧系元素的无机-有机杂化物[Pr(NMP)6(PW 12 O 40)]n(1),[Eu(NMP)6(PW 12 O 40)]n(2)和[Er 2(NMP)12(PW 12 O 40)][PW 12 O 40](3)(NMP= N-甲基-2-吡咯烷酮),并通过元素分析,IR,UV-vis和单晶X射线衍射进行了表征。化合物1和2具有一维无限锯齿链结构,而化合物3由于镧系收缩而具有离子不对称结构。这三种化合物都是光致变色的。在2- 300 K范围内测量的1的磁化率表明,在化合物中存在占主导地位的反铁磁相互作用。发光性质的研究结果表明,化合物2对Zn ~(2+)离子具有很好的选择性。
Three inorganic–organic hybrids based on Keggin tungstophosphates and lanthanides, [Pr(NMP)6(PW12O40)]n(1), [Eu(NMP)6(PW12O40)]n(2), and [Er2(NMP)12(PW12O40)][PW12O40] (3) (NMP=N-methyl-2-pyrrolidone), have been synthesized and characterized by elemental analysis, IR, UV–vis, and single-crystal X-ray diffraction. Compounds 1 and 2 exhibit 1D infinite zigzag chain structures, while compound 3 exhibits an ionic asymmetric structure due to lanthanide contraction. The three compounds are all photochromic. The magnetic susceptibility for 1 measured over the range 2–300K shows that there is the dominant antiferromagnetic interaction in the compound. The results of luminescent properties show that compound 2 displays an interesting selectivity for Zn2+ions.
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