01658nas a2200277   4500008004100000022001400041245006700055210006600122260007300188300001000261490000800271520076700279653001501046653001701061653001801078653001801096653001401114653003501128100002301163700001901186700002201205700001401227700002001241700002101261856009801282       2005                        eng d  a0022-231300aPhotoluminescent core-shell particles of organic dye in silica0 aPhotoluminescent coreshell particles of organic dye in silica  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUL  a15-230 v1143 a<p>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.</p>10acore-shell10aLuminescence10aNanoparticles10aphotoemission10aRH06G dye10atetraethylorthosilicate (TEOS)1 aEthiraj, Anita, S.1 aHebalkar, Neha1 aKharrazi, Sharmin1 aUrban, J.1 aSainkar, S., R.1 aKulkarni, S., K.  uhttps://library.ncl.res.in/content/photoluminescent-core-shell-particles-organic-dye-silica-001445nas a2200265   4500008004100000022001400041245005800055210005700113260007300170300001400243490000700257520060300264653001500867653001900882653001700901653001900918653002800937100002300965700002200988700001901010700001401029700002001043700002101063856009501084       2007                        eng d  a0167-577X00aHighly photostable dye entrapped core-shell particles0 aHighly photostable dye entrapped coreshell particles  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcOCT  a4738-47420 v613 a<p>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.</p>10acore-shell10acoumarin 7 dye10aLuminescence10aphotostability10atetraethylorthosilicate1 aEthiraj, Anita, S.1 aKharrazi, Sharmin1 aHebalkar, Neha1 aUrban, J.1 aSainkar, S., R.1 aKulkarni, S., K.  uhttps://library.ncl.res.in/content/highly-photostable-dye-entrapped-core-shell-particles-0