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Thermoresponsive and Photoluminescent Hybrid Silicon Nanoparticles by Surface‐Initiated Group Transfer Polymerization of Diethyl Vinylphosphonate
Author(s) -
Kehrle Julian,
Höhlein Ignaz M. D.,
Yang Zhenyu,
Jochem AljoshaRakim,
Helbich Tobias,
Kraus Tobias,
Veinot Jonathan G. C.,
Rieger Bernhard
Publication year - 2014
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201405946
Subject(s) - photoluminescence , materials science , polymerization , nanoparticle , chemical engineering , polymer , nanocrystal , particle (ecology) , surface modification , silicon , polymer chemistry , nanotechnology , composite material , optoelectronics , oceanography , geology , engineering
We present a method to combine the functional features of poly(diethyl vinylphosphonate) (PDEVP) and photoluminescent silicon nanocrystals. The polymer–particle hybrids were synthesized in three steps through surface‐initiated group transfer polymerization using Cp 2 YCH 2 TMS(thf) as a catalyst. This pathway of particle modification renders the nanoparticle surface stable against oxidation. Although SiNC properties are known to be sensitive toward transition metals, the hybrid particles exhibit red photoluminescence in water. The temperature‐dependent coiling of PDEVP results in a change of the hydrodynamic radius of the hybrid particles in water. To the best of our knowledge, this is the first example of controlled catalytic polymerization reactions on a silicon nanocrystal surface.