Instantaneous Functionalization of Chemically Etched Silicon Nanocrystal Surfaces.
Angew Chem Int Ed Engl
; 56(22): 6073-6077, 2017 05 22.
Article
in En
| MEDLINE
| ID: mdl-27862780
ABSTRACT
Remarkable advances in surface hydrosilylation reactions of C=C and C=O bonds on hydride-terminated silicon have revolutionized silicon surface functionalization. However, existing methods for functionalizing hydride-terminated Si nanocrystals (H-SiNCs) require long reaction times and elevated temperatures. Herein, we report a room-temperature method for functionalizing H-SiNC surfaces within seconds by stripping outermost atoms on H-SiNC surfaces with xenon difluoride (XeF2 ). Detailed analysis of the reaction byproducts by inâ
situ NMR spectroscopy and GC-MS provided unprecedented insight into NC surface composition and reactivity as well as the complex reaction mechanism of XeF2 activated hydrosilylation.
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MEDLINE
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En
Year:
2017
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Article