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Aggregation‐Enhanced Fluorescence in Organically Modified Silica Nanoparticles: A Novel Approach toward High‐Signal‐Output Nanoprobes for Two‐Photon Fluorescence Bioimaging
Author(s) -
Kim S.,
Pudavar H. E.,
Bonoiu A.,
Prasad P. N.
Publication year - 2007
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.200700098
Subject(s) - fluorescence , chromophore , materials science , nanoparticle , signal (programming language) , absorption (acoustics) , anthracene , two photon excitation microscopy , photochemistry , photon , ormosil , nanotechnology , optics , chemistry , computer science , sol gel , physics , composite material , programming language
Phase‐separated nanoaggregation of a highly loaded 9,10‐bis[4'‐(4''‐aminostyryl)styryl]anthracene dye in organically modified silica (ORMOSIL) nanoparticles boosts intracellular two‐photon fluorescence signal by virtue of enhanced two‐photon absorption and emission, high chromophore number density in the nano‐space, and noninvasive cellular uptake.