Anderson, Ryan T. published the artcileDirect Conversion of Hydride- to Siloxane-Terminated Silicon Quantum Dots, Related Products of alcohols-buliding-blocks, the publication is Journal of Physical Chemistry C (2016), 120(45), 25822-25831, database is CAplus.
Peripheral surface functionalization of hydride-terminated silicon quantum dots (SiQD) is necessary in order to minimize their oxidation/aggregation and allow for solution processability. Historically thermal hydrosilylation addition of alkenes and alkynes across the Si-H surface to form Si-C bonds has been the primary method to achieve this. The authors demonstrate a mild alternative approach to functionalize hydride-terminated SiQDs using bulky silanols in the presence of free-radical initiators to form stable siloxane (∼Si-O-SiR3) surfaces with hydrogen gas as a byproduct. This offers an alternative to existing methods of forming siloxane surfaces that require corrosive Si-Cl based chem. with HCl byproducts. A 52 nm blue shift in the photoluminescent spectra of siloxane vs. alkyl-functionalized SiQDs is observed that we explain using computational theory. Model compound synthesis of silane and silsesquioxane analogs is used to optimize surface chem. and elucidate reaction mechanisms. Thorough characterization on the extent of siloxane surface coverage is provided using FTIR and XPS. TEM is used to demonstrate SiQD size and integrity after surface chem. and product isolation.
Journal of Physical Chemistry C published new progress about 597-52-4. 597-52-4 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic Chain, name is Triethylsilanol, and the molecular formula is C6H16OSi, Related Products of alcohols-buliding-blocks.
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