Synthesis, Structure and Chromic Properties of 4,4 '-Bipyridine Polyoxomolybdate

	Synthesis, Structure and Chromic Properties of 4,4 '-Bipyridine Polyoxomolybdate
	Sun DH ; Zhang JL ; Ren HJ ; Cui ZF ; Sun DX
刊名	acta physico-chimica sinica
	2010
卷号	26 期号:5 页码:1264-1270
关键词	HYDROTHERMAL SYNTHESES CRYSTAL-STRUCTURES ORGANIC SUBSTRATE HYBRID MATERIALS POLYOXOMETALATE COMPLEXES CLUSTERS CHAINS FILMS
ISSN号	1000-6818
通讯作者	sun dh
中文摘要	we synthesized a 4,4'-bipyridine polyoxomolybdate ((4,4'-bipyridine) mo7o22 center dot h2o) single crystal supramolecular compound by a hydrothermal method and characterized its composition, thermostability, structure, spectra and electron properties by elemental analysis, thermal gravimetric and differential thermal analysis (tg-dta), powder x. ray diffraction (xrd), single crystal x. ray diffraction, fourier transform infrared (ftir) spectroscopy, uv-vis diffuse reflectance spectroscopy (uv-vis drs), and electron spin resonance (esr). experimental results show that the molecular formula of the supramolecular compound is c10h12mo7n2o23 and it does not decompose below 320 degrees c in air. it belongs to the monoclinic system(space group p-2/n) with a = 1.22561(19) nm, b = 0.55222(9) nm, c = 1.8385(3) nm, beta = 103.221(2)degrees, v = 1.2113(3) nm(3), z = 2 and d-c = 3.289 g . cm(-3). the final statistics based on f-2 are gof = 0.982, r-1 = 0.0228 and omega r-2 = 0.0557 for i > 2 sigma (i). the single crystal supramolecular compound consists of protonated 4,4'-bipyridine cations and polyoxomolybdate [mo7o22](2-) anions as well as lattice water. they form a two dimensional (2d) network through hydrogen bonds, electrostatic attraction, and intermolecular forces. the samples show photochromism under uv irradiation and thermochromism under annealing conditions. xrd and ftir verify that before and after the color changes, the crystal structure of the samples is almost unchanged except for distortion. esr spectra indicate that a difference exists between the thermochromic and photochromic mechanisms. this supramolecular compound with thermochromic and photochromic behaviors can serve as a reference model for a chromic mechanism and may have potential application in fields such as sensors and photosensitive materials.
收录类别	SCI收录期刊论文
语种	中文
WOS记录号	WOS:000277881600013
公开日期	2012-06-06
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/43717]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Sun DH,Zhang JL,Ren HJ,et al. Synthesis, Structure and Chromic Properties of 4,4 '-Bipyridine Polyoxomolybdate[J]. acta physico-chimica sinica,2010,26(5):1264-1270.
APA	Sun DH,Zhang JL,Ren HJ,Cui ZF,&Sun DX.(2010).Synthesis, Structure and Chromic Properties of 4,4 '-Bipyridine Polyoxomolybdate.acta physico-chimica sinica,26(5),1264-1270.
MLA	Sun DH,et al."Synthesis, Structure and Chromic Properties of 4,4 '-Bipyridine Polyoxomolybdate".acta physico-chimica sinica 26.5(2010):1264-1270.