Photoluminescent core-shell particles of organic dye in silica

Ethiraj, Anita S. ; Hebalkar, Neha ; Kharrazi, Sharmin ; Urban, J. ; Sainkar, S. R. ; Kulkarni, S. K. (2005) Photoluminescent core-shell particles of organic dye in silica Journal of Luminescence, 114 (1). pp. 15-23. ISSN 0022-2313

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Using a single silica precursor, Rhodamine 6G organic dye molecules have been entrapped in silica particles resulting into core-shell particles of ~500 nm diameter. Energy dispersive X-ray analysis, X-ray photoelectron spectroscopy and transmission electron microscopy analysis reveals that dye molecules are trapped inside the silica particles. Photoluminescence investigations show that highly luminescent and photostable core-shell particles are formed. Such core-shell particles can be easily suspended in water and would be useful for a variety of applications. However, there is a blue shift in the photoluminescence wavelength in case of core-shell particles compared to bare dye powder sample.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Core-shell; Nanoparticles; Tetraethylorthosilicate (TEOS); RHO6G Dye; Photoemission; Luminescence
ID Code:17954
Deposited On:17 Nov 2010 13:27
Last Modified:04 Jun 2011 08:43

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