研究进展

牛景杨教授课题组:J. Mater. Chem. C.,2015, 3, 4632-4639.

信息来源: 暂无 发布日期: 2015-03-16浏览次数:


题目:  Controllable assembly of multicarboxylic acids functionalized heteropolyoxomolybdates and allochroic properties

作者:  Yanfen Liang, Suzhi Li, Donghui Yang, Pengtao Ma, Jingyang Niu* and JingpingWang*

期刊:  J. Mater. Chem. C

年卷页:  2015, 3, 4632-4639

摘要:  A series of inorganic-organic hybrid heteropolyoxomolybdates built from [TeMo6O21]2∙polyoxoanions and multicarboxylic acids including (C3N2H5)4H6[(TeMo6O21)2{O2C(CH2)2CO2}3]∙9.5H2O (1), (C3N2H5)8H2- [(TeMo6O21)2{O2C(CH2)6CO2}3]∙3.5H2O (2) and (CN3H4)16H4[(TeMo6O21)4{C6H3(COO)3}4]∙16H2O (3) have been synthesized arising from the reactions of (NH4)6Mo7O24•4H2O, Na2TeO3/TeO2 and the corresponding multicarboxylic acids in an aqueous medium. X-ray single crystal diffraction, X-ray powder diffraction (XPRD), elemental analyses, inductively coupled plasma (ICP) spectra, IR spectra, UV spectra and thermogravimetric(TG) analyses have been implemented. Crystal structure analyses reveal that both compounds 1 and 2 are dimers, while 3 is a tetramer, however, they contain the same {TeMo6} unit which consists of a six-membered MoO6 octahedral ring capped by one {TeO3} trigonal pyramid. Compounds 1-3 exhibit intriguing allochroic properties. They can change color from white to blue/green when heated. Upon the irradiation of a xenon lamp (full wave-band, P=300 W), their color can change from white to reddish brown.