@article { ISI:000230436500003, title = {Photoluminescent core-shell particles of organic dye in silica}, journal = {Journal of Luminescence}, volume = {114}, number = {1}, year = {2005}, month = {JUL}, pages = {15-23}, publisher = {ELSEVIER SCIENCE BV}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

Using a single silica precursor, Rhodamine 6G organic dye molecules have been entrapped in silica particles resulting into core-shell particles of similar to 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 photolumineseence wavelength in case of core-shell particles compared to bare dye powder sample. (c) 2004 Elsevier B.V. All rights reserved.

}, keywords = {core-shell, Luminescence, Nanoparticles, photoemission, RH06G dye, tetraethylorthosilicate (TEOS)}, issn = {0022-2313}, doi = {10.1016/j.jlumin.2004.11.005}, author = {Ethiraj, Anita S. and Hebalkar, Neha and Kharrazi, Sharmin and Urban, J. and Sainkar, S. R. and Kulkarni, S. K.} } @article { ISI:000249567000022, title = {Highly photostable dye entrapped core-shell particles}, journal = {Materials Letters}, volume = {61}, number = {25}, year = {2007}, month = {OCT}, pages = {4738-4742}, publisher = {ELSEVIER SCIENCE BV}, type = {Article}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

Organic dye namely Coumarin 7 has been entrapped in silica particles using a single silica precursor viz. tetraethylorthosilicate. Both bare Coumarin 7 dye and dye incorporated core-shell particles were studied. Investigations of these core-shell composites were carried out using different characterization techniques such as energy dispersive X-ray analysis, X-ray photoelectron spectroscopy and transmission electron microscopy. It has been shown that the photostability of dye molecules is improved along with an increase in photoluminescence. (c) 2007 Elsevier B.V. All rights reserved.

}, keywords = {core-shell, coumarin 7 dye, Luminescence, photostability, tetraethylorthosilicate}, issn = {0167-577X}, doi = {10.1016/j.matlet.2007.03.030}, author = {Ethiraj, Anita S. and Kharrazi, Sharmin and Hebalkar, Neha and Urban, J. and Sainkar, S. R. and Kulkarni, S. K.} } @article { ISI:000258195800007, title = {Low temperature synthesis of ZnSe nanoparticles}, journal = {Materials Letters}, volume = {62}, number = {23}, year = {2008}, month = {AUG}, pages = {3803-3805}, publisher = {ELSEVIER SCIENCE BV}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

Synthesis of thioglycerol capped zinc selenide nanoparticles with a relatively narrow size distribution by a simple and inexpensive low temperature (similar to 80 degrees C) wet chemical method is reported here. Main advantage of this method is the use of non-toxic precursors. The size of the nanoparticles can be varied easily by changing the concentration of the capping agent. The extracted nanoparticles remain stable under normal atmospheric conditions and can be redispersed in suitable solvents. The sharp absorption features obtained in the UV-Visible absorption spectra reveal the formation of monodispersed ZnSe nanoparticles. The nanoparticles were characterized using X-ray photoelectron spectroscopy, X-ray diffraction, UV-Visible absorption spectroscopy, photoluminescence and transmission electron microscopy. (C) 2008 Elsevier B.V. All rights reserved.

}, keywords = {Luminescence, Nanomaterials, Semiconductor, X-ray techniques}, issn = {0167-577X}, doi = {10.1016/j.matlet.2008.04.082}, author = {Deshpande, Aparna and Singh, Shashi B. and Abyaneh, Majid Kazemian and Pasricha, Renu and Kulkarni, S. K.} }