Facile construction of quasi 1D trimanganese tetraoxide nanostructures via soft templating  

作　　者：WANG Ning CAO Xia GUO Lin 

机构地区：[1]School of Chemistry and Environment, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2011年第11期1958-1962,共5页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 20973019,50725208 and 50902007);the Fundamental Research Funds for the Central Universities (Grant No. YMF1002016)

摘　　要：Self-assembly of nanocrystals can not only lead to a better understanding of inter-particle acting force, but also enable rational building of complex and functional materials for future nanodevices. Here by utilizing polyvinylpyrrolidone （PVP） as the as capping and structure directing agents, hierarchical Mn304 architectures involving coil-like nanorings, hexagonal nanoframes, and nanodisks are conveniently synthesized by a one-pot solution method. The sophisticated assemblies are proven to be me- diated by the PVP soft templates formed at varied concentrations. The driving forces of self-assembled complex nanostructures and the unique role of PVP concentration are discussed. Magnetic properties of the as assembled Mn3O4 rings are also studied by a SQUID system, which shows the typical side effect of Curie temperature.Self-assembly of nanocrystals can not only lead to a better understanding of inter-particle acting force,but also enable rational building of complex and functional materials for future nanodevices.Here by utilizing polyvinylpyrrolidone (PVP) as the as capping and structure directing agents,hierarchical Mn 3 O 4 architectures involving coil-like nanorings,hexagonal nanoframes,and nanodisks are conveniently synthesized by a one-pot solution method.The sophisticated assemblies are proven to be mediated by the PVP soft templates formed at varied concentrations.The driving forces of self-assembled complex nanostructures and the unique role of PVP concentration are discussed.Magnetic properties of the as assembled Mn 3 O 4 rings are also studied by a SQUID system,which shows the typical side effect of Curie temperature.

关 键 词：MN3O4 SELF-ASSEMBLY soft template MAGNETISM 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ137.12[化学工程—无机化工]