Facile Template-Free Fabrication of Aluminum-Organophosphorus Hybrid Nanorods: Formation Mechanism and Enhanced Luminescence Property

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• 作者：Yawen Huang ; Jiajun Ma ; Junxiao Yang ; Ke Cao ; Zhongyuan Lu
• 刊名：The Journal of Physical Chemistry C
• 出版年：2012
• 出版时间：October 25, 2012
• 年：2012
• 卷：116
• 期：42
• 页码：22518-22525
• 全文大小：541K
• 年卷期：v.116,no.42(October 25, 2012)
• ISSN：1932-7455

文摘

Recently, much effort has been directed toward fabrication of metal-organophosphorus hybrids with microporous, fibered, layered, and open structures to obtain desired mechanical, optical, electric, and catalytic properties. In this work, aluminum鈥損hosphorus hybrid nanorods (APHNRs) with regular morphology were prepared by a template-free hydrothermal reaction of aluminum hydroxide with diphenylphosphinic acid (DPPA). Structure characterization of APHNRs by Fourier transform infrared spectroscopy, laser Raman spectroscopy, and X-ray diffraction demonstrate a structure with aluminophosphate main chains and phenyl pendant groups, which enable self-assembly into nanorods. The reaction conditions and the structures of phosphinic acids appear to have a significant impact on the morphology and size of nanorods. Moreover, the evolution of morphology and structure assembly during the forming process of APHNRs, as monitored by SEM and XRD, reveal a decomposition-assembly propagation process where the driving force of assembly is attributed to 蟺鈥撓€ stacking interactions between phenyl pendant groups. APHNRs show a significant increase in light emission relative to pure DPPA due to their compact structure resulting from the 蟺鈥撓€ stacking interaction. Detailed investigation revealed that photoluminescence was remarkably amplified by enhancing the compactness of APHNRs.