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Front Cover: Facile Formation of Stable Water‐Dispersed Luminescent Silicon Nanocrystals by Laser Processing in Liquid: Toward Fluorescent Labeling for Bio‐Imaging (ChemNanoMat 9/2019)
Author(s) -
Yuan Ze,
Nakamura Toshihiro,
Chinnathambi Shanmugavel,
Pu Yanbai,
Shirahata Naoto,
Matsuishi Kiyoto
Publication year - 2019
Publication title -
chemnanomat
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201900449
Subject(s) - biocompatibility , luminescence , fluorescence , porous silicon , silicon , materials science , nanocrystal , nanotechnology , aqueous solution , laser , chemical engineering , chemistry , optoelectronics , organic chemistry , optics , physics , engineering , metallurgy
A single‐step formation process has been developed for water‐soluble, highly biocompatible, red‐emitting silicon nanocrystals (Si‐nc) by using pulsed laser irradiation of porous silicon in an organic solution. The obtained Si‐nc shows excellent aqueous dispersibility and high photo‐ and pH‐stability due to robust surface hydrophilic terminations. The Si‐nc also has low cytotoxicity due to the biocompatibility of silicon and continues to exhibit a bright red luminescence after incubation with neuroblastoma cells. These properties make the present Si‐nc a promising candidate for fluorescent labelling in cellular imaging. More information can be found in the Full Paper by Toshihiro Nakamura et al. on page 1137 in Issue 9, 2019 (DOI: 10.1002/cnma.201900289).