The synthesized derivatives were evaluated for in vitro anticancer activity against B16F10 and MCF-7 cell lines for the first time and showed promising anticancer activity. Quantum yields are found to be 75% and 42% for doped and core-shell samples, respectively. An efficient synthesis of 3-(3-oxoaryl) indole derivatives over existing methodology by using green chemistry approach was developed. Pushpal Ghosh Assistant Professor, Department of Chemistry, Dr. Energy transfer efficiencies from Ce 3+ to Tb 3+are 65% and 45% for doped Na(Y 1.5Na 0.5)F 6:Ce:Tb material and NaYF 4: Ce/ Tb core-shell materials, respectively. Pushpal Ghosh Project Manager at Verticurl (A WPP Company). The decay times are found to be 8.4 ms and 5.4 ms for doped nanorods and core-shell nanoparticles, respectively, which reveals that non-radiative decay is higher in the case of core-shell nanoparticles than doped nanorods. Cell volume, cell parameters and lattice strain have been modified due to core-shell structure. I am especially interested in history and literature. The hexagonal crystal phase of Ce 3+-doped sodium yttrium fluoride nanocrystals is converted to the cubic polymorph after surface coating by TbF 3. I have more than 20 yrs experience in writing about financial markets. The core-shell nanoparticles are confirmed by X-ray diffraction study and transmission electron microscopy ( TEM) analysis. Jeganathan Saravanakumar,a Sunita Barik,c and Pushpal Ghosha Dedicated to Prof. The optical properties of the obtained materials promises use for various optoelectronic applications.Here, we report the preparation of Ce 3+ and Tb 3+ co-doped sodium yttrium fluoride nanorods and NaYF 4: Ce 3+/ Tb 3+ core-shell nanoparticles by the emulsion method. For cubic NaREF₄ a tensile strain is observed, whilst for the hexagonal and trigonal binary fluoride a compressive strain is observed. The lattice strain changes with the rare-earth fluoride phase. 43 405401 View the article online for updates and enhancements. The growth mechanism behind this morphology change is explained from atomistic origin using electron microscope studies. To cite this article: Pushpal Ghosh et al 2010 J. This paper presents an overview of the recent results on upconversion andphotoluminescence of rare-earth ions in nanoenvironments. For rare earth ions with a larger radius than that of La³⁺ (1.216 Å), instead of ternary fluorides, binary fluorides REF₃ in the trigonal modification is obtained. PUSHPAL GHOSH and AMITAVA PATRA¤ Sol-Gel Division, Central Glass & Ceramic Research Institute, Jadavpur, Kolkata 700 032,India¤Corresponding author. Managing stock levels and making key decisions about stock control. Ensuring to earn maximum revenue for the store & Zone to meet company's targets and policies. For rare-earth cations with smaller ionic radii (below 1.075 Å), cubic NaREF₄ with a spherical morphology is obtained, whilst for rare-earth cations with radii between 1.08 Å and 1.13 Å, the formation of hexagonal NaREF₄ with a nanorod-like morphology is observed. Managing team, Mentoring the new team members regarding product & process knowledge. Paul Campbell, Alexander-von-Humboldt Fellow, Ruhr-Universität Bochum, Germany 2012-2014) Dr. In an ionic liquid assisted solvothermal synthesis developed by us for the synthesis of rare-earth (RE) fluorides, it is possible to control the product formation by the choice of the rare earth ion. Pushpal Ghosh, Alexander-von-Humboldt Fellow, Ruhr-Universität Bochum, Germany (2011-2013) Dr.
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