文献类型：期刊文献

英文题名：Self-assembly and morphology change of four organic-polyoxometalate hybrids with different solid structures from 2D lamellar to 3D hexagonal forms

作者：Tan, Chunxia[1]

第一作者：谈春霞

通信作者：Tan, CX[1]

机构：[1]Gansu Univ Chinese Med, Chem Sci & Engn, Lanzhou 730000, Peoples R China

第一机构：甘肃中医药大学

通信机构：[1]corresponding author), Gansu Univ Chinese Med, Chem Sci & Engn, Lanzhou 730000, Peoples R China.|[10735]甘肃中医药大学;

年份：2017

卷号：1130

起止页码：276

外文期刊名：JOURNAL OF MOLECULAR STRUCTURE

收录：;EI(收录号：20164302953968);Scopus(收录号：2-s2.0-84992084031);WOS:【SCI-EXPANDED(收录号:WOS:000390731800033)】；

语种：英文

外文关键词：Organic-polyoxometalates; Self-assembly; Morphology; Lamellar structure; Hexagonal structure

摘要：A series of organic-polyoxometalate hybrids L-EuW11, L-EuW10, L-EuW22 and L-Mo-132 were fabricated by the same organic cations with different polyoxometalate anions from K-5[Eu(SiW11O39)(H2O)(2)], K-13[EU(SiW11O39)(2)]center dot 15H(2)O, Na-9[EuW10O36]center dot 36H(2)O to "Keplerate"-type (NH4)(72)[Mo132O372(-SO4)(30)(H2O)(72)]. The structures of hybrids were characterized by elemental analysis, thermogravimetric analysis (TGA), infrared spectra (IR) and small-angle X-ray scattering (SAXS). Self-assembly behaviors and aggregates morphology of these hybrids in mixed solution of chloroform-methanol are obtained by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). L-EuW11, L-EuW10 and L-EuW22 have different aggregation morphology but the similarly layered structures. Micron-sized vesicular structures of L-Mo132 rupture in solvent and eventually turn into approximate hexagon. SAXS analysis of L-EuW11, L-EuWio and L-EuW22 shows that these hybrids aggregates change from two-dimensional (2D) lamellar to three-dimensional (3D) hexagonal structure in solid state. (C) 2016 Elsevier B.V. All rights reserved.