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• W1977445046 abstract "We have studied phosphor doping of core / shell nanocrystals (NCs) where the impurity emitter resides in the shell.We have found that a two step synthesis can be used to create these non-toxic materials that efficiently transfer energyfrom the core to the doped shell. These core / shell NCs retain ample brightness when solubilized in water. Weexplored the functionalization of these materials in water as well to create ratiometric sensing agents. First,we used a method of controlled polymerization to synthesize amphiphilic polymers to solubilize the intrinsicallyhydrophobic NCs into water. The polymer has a build in chemical handle which we use to functionalize the polymersclosely bound to the NC with a fluorescent dye in aqueous solution. We have found that there exists efficient Forsterresonant energy transfer from the shell doped phosphors to the surface bound dyes. Conjugation of the NC to anenvironmentally sensitive dye such as fluorescein has also demonstrated that non-toxic doped NCs can be used todevelop ratiometric sensing / biological imaging agents. Last, we have found that the same technique can be applied tofunctionalize non-emissive magnetic nanocrystals as well." @default.
• W1977445046 created "2016-06-24" @default.
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• W1977445046 date "2008-02-07" @default.
• W1977445046 modified "2023-09-23" @default.
• W1977445046 title "Synthesis and functionalization of non-toxic visible-emitting nanocrystals" @default.
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• W1977445046 doi "https://doi.org/10.1117/12.784058" @default.
• W1977445046 hasPublicationYear "2008" @default.
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