Thermally Induced Hydrosilylation at Deuterium-Terminated Silicon Nanoparticles: An Investigation of the Radical Chain Propagation Mechanism

Langmuir ◽  
2009 ◽  
Vol 25 (12) ◽  
pp. 7050-7056 ◽  
Author(s):  
Jason Holm ◽  
Jeffrey T. Roberts
Keyword(s):  
Silicon Nanoparticles ◽  
Chain Propagation ◽  
Propagation Mechanism ◽  
Radical Chain ◽  
Thermally Induced

Sulfamides Direct Radical-Mediated Chlorination of Aliphatic C–H Bonds

2019 ◽  
Author(s):  
Melanie Short ◽  
Mina Shehata ◽  
Matthew Sanders ◽  
Jennifer Roizen
Keyword(s):  
Hydrogen Atom ◽  
Transfer Reaction ◽  
Hydrogen Atom Transfer ◽  
Chain Propagation ◽  
Propagation Mechanism ◽  
Atom Transfer ◽  
Radical Chain ◽  
Radical Intermediates ◽  
Transfer Processes ◽  
Unusual Position

Sulfamides guide intermolecular chlorine transfer to gamma-C(sp<sup>3</sup>) centers. This unusual position-selectivity arises because accessed sulfamidyl radical intermediates engage in otherwise rare 1,6-hydrogen-atom transfer processes. The disclosed chlorine-transfer reaction relies on a light-initiated radical chain-propagation mechanism to oxidize C(sp<sup>3</sup>)-H bonds.

Sulfamides Direct Radical-Mediated Chlorination of Aliphatic C–H Bonds

2019 ◽  
Author(s):  
Melanie Short ◽  
Mina Shehata ◽  
Matthew Sanders ◽  
Jennifer Roizen
Keyword(s):  
Hydrogen Atom ◽  
Transfer Reaction ◽  
Hydrogen Atom Transfer ◽  
Chain Propagation ◽  
Propagation Mechanism ◽  
Atom Transfer ◽  
Radical Chain ◽  
Radical Intermediates ◽  
Transfer Processes ◽  
Unusual Position

Sulfamides guide intermolecular chlorine transfer to gamma-C(sp<sup>3</sup>) centers. This unusual position-selectivity arises because accessed sulfamidyl radical intermediates engage in otherwise rare 1,6-hydrogen-atom transfer processes. The disclosed chlorine-transfer reaction relies on a light-initiated radical chain-propagation mechanism to oxidize C(sp<sup>3</sup>)-H bonds.

Sulfamides Direct Radical-Mediated Chlorination of Aliphatic C–H Bonds

2019 ◽  
Author(s):  
Melanie Short ◽  
Mina Shehata ◽  
Matthew Sanders ◽  
Jennifer Roizen
Keyword(s):  
Hydrogen Atom ◽  
Transfer Reaction ◽  
Hydrogen Atom Transfer ◽  
Chain Propagation ◽  
Propagation Mechanism ◽  
Atom Transfer ◽  
Radical Chain ◽  
Radical Intermediates ◽  
Transfer Processes ◽  
Unusual Position

Sulfamides guide intermolecular chlorine transfer to gamma-C(sp<sup>3</sup>) centers. This unusual position-selectivity arises because accessed sulfamidyl radical intermediates engage in otherwise rare 1,6-hydrogen-atom transfer processes. The disclosed chlorine-transfer reaction relies on a light-initiated radical chain-propagation mechanism to oxidize C(sp<sup>3</sup>)-H bonds.

Sulfamides Direct Radical-Mediated Chlorination of Aliphatic C–H Bonds

2019 ◽  
Author(s):  
Melanie Short ◽  
Mina Shehata ◽  
Matthew Sanders ◽  
Jennifer Roizen
Keyword(s):  
Hydrogen Atom ◽  
Transfer Reaction ◽  
Hydrogen Atom Transfer ◽  
Chain Propagation ◽  
Propagation Mechanism ◽  
Atom Transfer ◽  
Radical Chain ◽  
Radical Intermediates ◽  
Transfer Processes ◽  
Unusual Position

Sulfamides guide intermolecular chlorine transfer to gamma-C(sp<sup>3</sup>) centers. This unusual position-selectivity arises because accessed sulfamidyl radical intermediates engage in otherwise rare 1,6-hydrogen-atom transfer processes. The disclosed chlorine-transfer reaction relies on a light-initiated radical chain-propagation mechanism to oxidize C(sp<sup>3</sup>)-H bonds.

Thermally induced silane dehydrocoupling on porous silicon nanoparticles for ultra-long-acting drug release

Nanoscale ◽  
2021 ◽  
Vol 13 (37) ◽  
pp. 15560-15568
Author(s):  
Ji Hyeon Oh ◽  
Rae Hyung Kang ◽  
Jaehoon Kim ◽  
Eun-Kyoung Bang ◽  
Dokyoung Kim
Keyword(s):  
Porous Silicon ◽  
Drug Release ◽  
Silicon Nanoparticles ◽  
Thermally Induced ◽  
Porous Silicon Nanoparticles ◽  
Long Acting ◽  
Nano Formulation ◽  
First Time

An ultra-long-acting drug-releasable (>2 weeks) nano-formulation based on porous silicon nanoparticles (pSiNPs) that are prepared using the thermally induced silane dehydrocoupling, an amphiphilic lipid-coating, and is disclosed for the first time.

A new thermoelectric concept using large area PN junctions

2013 ◽  
Vol 1543 ◽  
pp. 3-8 ◽  
Author(s):  
R. Chavez ◽  
A. Becker ◽  
V. Kessler ◽  
M. Engenhorst ◽  
N. Petermann ◽  
...  
Keyword(s):  
Silicon Nanoparticles ◽  
Electrical Contacts ◽  
Large Area ◽  
Charge Generation ◽  
Thermally Induced ◽  
Pn Junction ◽  
In Series ◽  
Working Principle ◽  
Pn Junctions ◽  
P Type

ABSTRACTA new thermoelectric concept using large area silicon PN junctions is experimentally demonstrated. In contrast to conventional thermoelectric generators where the n-type and p-type semiconductors are connected electrically in series and thermally in parallel, we demonstrate a large area PN junction made from densified silicon nanoparticles that combines thermally induced charge generation and separation in a space charge region with the conventional Seebeck effect by applying a temperature gradient parallel to the PN junction. In the proposed concept, the electrical contacts are made at the cold side eliminating the need for contacts at the hot side allowing temperature gradients greater than 100K to be applied. The investigated PN junction devices are produced by stacking n-type and p-type nanopowder prior to a densification process. The nanoparticulate nature of the densified PN junction lowers thermal conductivity and increases the intraband traps density which we propose is beneficial for transport across the PN junction thus enhancing the thermoelectric properties. A fundamental working principle of the proposed concept is suggested, along with characterization of power output and output voltages per temperature difference that are close to those one would expect from a conventional thermoelectric generator.

Toward Controlled Gilch Synthesis of Poly(p-phenylene vinylenes):  Anionic vs Radical Chain Propagation, a Mechanistic Reinvestigation

2007 ◽  
Vol 40 (25) ◽  
pp. 8842-8854 ◽  
Author(s):  
Thorsten Schwalm ◽  
Jens Wiesecke ◽  
Stefan Immel ◽  
Matthias Rehahn
Keyword(s):  
Chain Propagation ◽  
Radical Chain
Sign in / Sign up

Export Citation Format

Share Document