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Functionalization of Hydride‐Terminated Photoluminescent Silicon Nanocrystals with Organolithium Reagents
Author(s) -
Höhlein Ignaz M. D.,
Angı Arzu,
Sinelnikov Regina,
Veinot Jonathan G. C.,
Rieger Bernhard
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201405555
Subject(s) - hydrosilylation , surface modification , hydride , electrophile , nanocrystal , reagent , silicon , materials science , photoluminescence , quenching (fluorescence) , cleavage (geology) , silanes , nanotechnology , photochemistry , polymer chemistry , chemical engineering , chemistry , fluorescence , organic chemistry , catalysis , silane , optoelectronics , physics , quantum mechanics , engineering , fracture (geology) , composite material , metal , metallurgy
Hydride‐terminated photoluminescent silicon nanocrystals (SiNCs) were functionalized with organolithium compounds. The reaction is proposed to proceed through cleavage of SiSi bonds and formation of a SiLi surface species. The method yields colloidally stabilized SiNCs at room temperature with short reaction times. SiNCs with mixed surface functionalities can be prepared in an easy two‐step reaction by this method by quenching of the SiLi group with electrophiles or by addressing free SiH groups on the surface with a hydrosilylation reaction.