Functionalization of Nanocrystalline Porous Silicon Surfaces with Aryllithium Reagents:  Formation of Silicon−Carbon Bonds by Cleavage of Silicon−Silicon Bonds

1998 ◽  
Vol 120 (10) ◽  
pp. 2376-2381 ◽  
Author(s):  
Jae Hee Song ◽  
Michael J. Sailor
Keyword(s):  
Porous Silicon ◽  
Silicon Surfaces ◽  
Silicon Carbon ◽  
Carbon Bonds ◽  
Silicon Silicon

Functionalization of Porous Silicon with Alkenes and Alkynes via Carbocation-Mediated Hydrosilylation

2002 ◽  
Vol 737 ◽  
Author(s):  
J. M. Schmeltzer ◽  
Lon A. Porter ◽  
Michael P. Stewart ◽  
Carmen M. López ◽  
Jillian M. Buriak
Keyword(s):  
Porous Silicon ◽  
Chemical Degradation ◽  
Silicon Surfaces ◽  
Silicon Substrates ◽  
Organic Monolayers ◽  
Chemical Methods ◽  
Silicon Carbon ◽  
Functionalized Materials ◽  
Hydride Abstraction ◽  
Solution Parameters

ABSTRACTEfforts to produce stable, derivatized porous silicon have yielded a number of chemical methods capable of functionalizing this interesting material with organic monolayers. Hydride-terminated porous silicon substrates react with alkenes and alkynes in the presence of dilute triphenylcarbenium salt solutions to respectively produce alkyl- and alkenyl-functionalized materials. Characterization by transmission FTIR and solid-state NMR suggests the formation of highly stable silicon-carbon bonds to yield covalently bound organic moieties. Porous silicon passivated in this fashion exhibits a greater resistance than that of the native material to chemical degradation, indicating that the organic functionalities may serve to sterically shield the nanocrystallites from nucleophiles. Hydrosilylation is proposed to proceed via hydride abstraction from the substrate followed by electrophilic attack by the subsequent species upon the alkene/alkyne, a mechanism previously hypothesized for the formation of stabilized β-silyl carbocations. The reaction is tolerant of a variety of substrate functional groups and native porous silicon surfaces but depends markedly upon the identity of the salt counteranion, among other solution parameters.

ChemInform Abstract: New Approaches Toward the Formation of Silicon-Carbon Bonds on Porous Silicon

ChemInform ◽  
2010 ◽  
Vol 33 (50) ◽  
pp. no-no
Author(s):  
Michael P. Stewart ◽  
Jillian M. Buriak
Keyword(s):  
Porous Silicon ◽  
New Approaches ◽  
Silicon Carbon ◽  
Carbon Bonds

New Approaches Toward the Formation of Silicon-Carbon Bonds on Porous Silicon

2002 ◽  
Vol 23 (3) ◽  
pp. 179-203 ◽  
Author(s):  
Michael P. Stewart ◽  
Jillian M. Buriak
Keyword(s):  
Porous Silicon ◽  
New Approaches ◽  
Silicon Carbon ◽  
Carbon Bonds

Investigation of Porous Silicon/Carbon Composite as Anodes for Lithium Ion Batteries

2015 ◽  
Vol 30 (4) ◽  
pp. 351 ◽  
Author(s):  
HUANG Yan-Hua ◽  
HAN Xiang ◽  
CHEN Hui-Xin ◽  
CHEN Song-Yan ◽  
YANG Yong
Keyword(s):  
Porous Silicon ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Carbon Composite ◽  
Silicon Carbon

FTIR Studies of H2O and D2O Decomposition on Porous Silicon Surfaces

1990 ◽  
Author(s):  
P. Gupta ◽  
A. C. Dillon ◽  
A. S. Bracker ◽  
S. M. George
Keyword(s):  
Porous Silicon ◽  
Silicon Surfaces ◽  
Ftir Studies
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