Self-Assembly of Clewlike ZnO Superstructures in the Presence of Copolymer

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• 作者：Peng Bai ; Pingping Wu ; Zifeng Yan ; Jinkai Zhou ; X. S Zhao
• 刊名：Journal of Physical Chemistry C
• 出版年：2007
• 出版时间：July 12, 2007
• 年：2007
• 卷：111
• 期：27
• 页码：9729 - 9733
• 全文大小：606K
• 年卷期：v.111,no.27(July 12, 2007)
• ISSN：1932-7455

文摘

Clewlike ZnO superstructures were synthesized using a copolymer-controlled self-assembly method in thepresence of urea. The structural properties were investigated using X-ray diffraction, scanning electronmicroscopy, transmission electron microscopy, and selected-area electron diffraction techniques. It was observedthat the concentrations of the copolymer and urea are the key parameters determining the superstructuremorphology. Experimental data also showed that the copolymer has played a dual function in the self-assemblyprocess; namely, one is to control the oriented attachment of the nanoparticles, and the other is to stabilizethe superstructures. Room-temperature photoluminescence data showed interesting optical properties of theZnO superstructures.