منابع مشابه
Bridging silicon nanoparticles and thermoelectrics: phenylacetylene functionalization.
Silicon is a promising alternative to current thermoelectric materials (Bi(2)Te(3)). Silicon nanoparticle based materials show especially low thermal conductivities due to their high number of interfaces, which increases the observed phonon scattering. The major obstacle with these materials is maintaining high electrical conductivity. Surface functionalization with phenylacetylene shows an ele...
متن کاملLocalized Electronic Excitations in Phenylacetylene Dendrimers
Electron-hole pairs created upon optical excitation of conjugated dendrimers (fractal antenna macromolecules) are shown to be localized within segments connected by benzene rings substituted at the meta-position. The absorption spectra of two families of dendrimers are analyzed using collective electronic normal modes representing the changes in charge and bond-order distributions induced by th...
متن کاملLewis acid double metal cyanide catalysts for hydroamination of phenylacetylene.
Double metal cyanides (DMCs) are highly active recyclable heterogeneous catalysts for hydroamination of phenylacetylene with 4-isopropylaniline. The best hydroamination yields are obtained with Zn-Co DMCs, especially if the particle size is decreased by a reverse emulsion synthesis technique.
متن کاملEnantio and diastereoselective addition of phenylacetylene to racemic α-chloroketones.
In this report, we have presented the first diastereoselective addition of phenylacetylene to chiral racemic chloroketones. The addition is controlled by the reactivity of the chloroketones that allowed the stereoselective reaction to be performed at -20 °C. Chiral racemic chloroketones are used in the reaction. By carefully controlling the temperature and the reaction time we were able to isol...
متن کاملTheoretical examination of picosecond phenol migration dynamics in phenylacetylene solution
The time-dependent dynamics of phenol dissolved in liquid phenylacetylene is theoretically investigated through first-principles calculations and molecular dynamics. By modeling the hydroxyl functional group with a Morse potential, the bond becomes site-sensitive, vibrating at distinct frequencies when bound at the phenylacetylene triple bond and aromatic ring. This can be exploited to simulate...
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ژورنال
عنوان ژورنال: Synlett
سال: 2014
ISSN: 0936-5214,1437-2096
DOI: 10.1055/s-0033-1339082