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Novel Fluorescent Silica Nanoparticles: Towards Ultrabright Silica Nanoparticles
Author(s) -
Sokolov Igor,
Naik Sajo
Publication year - 2008
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200700236
Subject(s) - fluorescence , nanoparticle , materials science , quenching (fluorescence) , nanotechnology , aqueous solution , molecule , chemical engineering , photochemistry , chemistry , organic chemistry , optics , physics , engineering
A new class of silica fluorescent nanoparticles (≈30‐nm diameter; see image) is described, in which organic fluorescent dyes are physically entrapped inside self‐sealed silica nanochannels. The 1D confinement of the dye molecules inside the channels means the dyes can be packed without quenching fluorescence, ≈250 times denser inside the nanoparticles than in aqueous medium. The synthesized particles are compatible with labeling biological cells.