Optical characteristics of 9, 10-diphenylanthracene nanocrystals fabricated by reprecipitation

Zhaolin Yuan; Junsheng Yu; Wenming Ma; Yadong Jiang

doi:10.1117/12.865961

22 October 2010 Optical characteristics of 9, 10-diphenylanthracene nanocrystals fabricated by reprecipitation

Zhaolin Yuan, Junsheng Yu, Wenming Ma, Yadong Jiang

Proceedings Volume 7658, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology; 76582H (2010) https://doi.org/10.1117/12.865961
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

Abstract

9,10-Diphenylanthracene (DPA) nanocrystals were prepared using a reprecipitation method. Morphologies and Optical properties of DPA nanocrystals were investigated by a scanning electron microscope (SEM), UV-Visible absorption and fluorescence emission spectra, respectively. The results showed that a large amount of DPA nanocrystals form and have a width of about 300-500 nm, a length of 500 nm, a thickness of a few tens of nanometers. Optical properties of the nanocrystals are obviously different from those of DPA monomer. All absorption peaks for DPA nanocrystals experience a bathochromic shift with respect to those of DPA monomer due to the formation of J-aggregates in the nanocrystals. The emission peaks of DPA nanocrystals are red-shifted compared with those of the diluted solution, which are attributed to the intermolecular force difference between the monomer and nanocrystals. In addition, the mechanisms of nanocrystals formation were also analyzed and discussed in detail.

Citation Download Citation

Zhaolin Yuan, Junsheng Yu, Wenming Ma, and Yadong Jiang "Optical characteristics of 9, 10-diphenylanthracene nanocrystals fabricated by reprecipitation", Proc. SPIE 7658, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, 76582H (22 October 2010); https://doi.org/10.1117/12.865961

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KEYWORDS

Nanocrystals

Absorption

Scanning electron microscopy

Optical properties

Luminescence

Molecules

Molecular aggregates

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