Photostimulable fluorescent nanoparticles for biological imaging

Osvet A, Milde M, Dembski S, Rupp S, Gellermann C, Batentschuk M, Brabec C, Winnacker A (2012)

Publication Language: English

Publication Status: Published

Publication Type: Conference contribution, Conference Contribution

Publication year: 2012

Book Volume: 1342

Pages Range: 73-78

Conference Proceedings Title: 2011 MRS Spring Meeting

Event location: San Francisco, CA US

ISBN: 9781605113197

DOI: 10.1557/opl.2011.865


Spherical monodisperse core/shell-type nanoparticles, comprising an amorphous SiO core coated with a luminescent phosphor layer were synthesized by the modified Pechini processes. The sol-gel method allows covering the 50-500 nm core particles with different inorganic phosphor layers of about 10 nm thickness, doped with rare-earth or transition metal ions which determine the luminescent properties. Particles comprising a Zn SiO shell, doped with Mn ions, are not only fluorescent under UV irradiation (260 nm), but store the activation energy by trapping electrons/holes at lattice defects. This energy is released as phosphorescence in the time scale of seconds and minutes, or as photostimulated luminescence under the excitation of red light (650 nm). Traps related to these processes are different, and their concentration is affected by the preparation conditions of the particles. © 2011 Materials Research Society.

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Osvet, A., Milde, M., Dembski, S., Rupp, S., Gellermann, C., Batentschuk, M.,... Winnacker, A. (2012). Photostimulable fluorescent nanoparticles for biological imaging. In 2011 MRS Spring Meeting (pp. 73-78). San Francisco, CA, US.


Osvet, Andres, et al. "Photostimulable fluorescent nanoparticles for biological imaging." Proceedings of the 2011 MRS Spring Meeting, San Francisco, CA 2012. 73-78.

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