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Incorporation of Luminescent Nanocrystals into Monodisperse Core–Shell Silica Microspheres
Author(s) -
Chan Y.,
Zimmer J. P.,
Stroh M.,
Steckel J. S.,
Jain R. K.,
Bawendi M. G.
Publication year - 2004
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200400237
Subject(s) - materials science , dispersity , microsphere , nanocrystal , fluorescence , coating , luminescence , nanotechnology , core (optical fiber) , excitation wavelength , wavelength , shell (structure) , chemical engineering , semiconductor , optoelectronics , polymer chemistry , composite material , optics , physics , engineering
Silica microspheres coated with a silica or titania shell containing fluorescent semiconductor nanocrystals are described. Since the coating process does not affect the monodispersity of the silica microspheres, microspheres of a defined size and emission wavelength, potentially useful for biological applications, can be fabricated. The Figure shows 100 nm diameter blue‐light‐emitting and 500 nm diameter red‐light‐emitting microspheres circulating in the brain of a mouse.