Nano/Microstructure Fabrication of Functional Organic Material: Polymorphic Structure and Tunable Luminescence

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• 作者：Savarimuthu Philip Anthony ; Sylvia M. Draper
• 刊名：Journal of Physical Chemistry C
• 出版年：2010
• 出版时间：July 15, 2010
• 年：2010
• 卷：114
• 期：27
• 页码：11708-11716
• 全文大小：545K
• 年卷期：v.114,no.27(July 15, 2010)
• ISSN：1932-7455

文摘

Nano/microstructure fabrication of 2-cyano-3(4-(diphenylamino)phenyl) acrylic acid (CDPA), an organic optoelectronic material, via a simple reprecipitation method produces particles with a different morphology, phase, and structure and a tailored luminescence. Spherical amorphous, diamond, and multifaceted microcrystals of CDPA were obtained by optimizing the fabrication conditions. CDPA with rod-like morphology was produced on the introduction of polymer additives to the growth solution. A polymorph of CDPA, not observed in the usual solution crystallization process, was obtained as 1D nanowires (200−400 nm (width) and 3−20 μm (length)). Powder X-ray diffraction and optical studies demonstrate the polymorphic structure of the nanowires. Scanning electron and confocal fluorescence microscopy, respectively, were used to demonstrate the different morphologies of fabricated nano/microstructures and the luminescence tuning (from 604 to 519 nm).