Instantaneous Functionalization of Chemically Etched Silicon Nanocrystal Surfaces. (11th November 2016)

• Record Type: Journal Article
• Authors: Mobarok, Md Hosnay; Purkait, Tapas K.; Islam, Muhammad Amirul; Miskolzie, Mark; Veinot, Jonathan G. C.
• Is Part Of: Angewandte Chemie. Volume 129:Number 22(2017)
• Page Start: 6169
• Page End: 6173
• Publication Date: 2016-11-11
• Subjects: Funktionalisierungen -- Nanokristalle -- NMR-Spektroskopie -- Silicium -- Xenondifluorid; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201609651
• Languages: English
• ISSNs: 0044-8249

Abstract

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 in 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.