TY  - JOUR
  - Collins, C.; Koleśnik, M.; Krstić, V.; Holmes, J. D.
  - 2010
  - September
  - Chemistry of Materials
  - Germanium nanowire synthesis from fluorothiolate-capped gold nanoparticles in supercritical carbon dioxide
  - Published
  - ()
  - 22
  - 5235
  - 5243
  - Ge nanowires seeded from Au nanoparticles capped with fluorothiolate ligands were synthesized in supercritical carbon dioxide (sc-CO2) by the thermal decomposition of diphenylgermane (DPG) at a temperature of 380 C and a pressure of 25.7 MPa. Both perfluorinated and semifluorinated capped Au nanoparticles acted as effective catalysts for growing Ge nanowires, with mean diameters of 11 nm (σ = 2.8) and 14 nm (σ = 3.5), respectively. The mean diameter of the Ge nanowires grown from the fluorous-capped Au nanoparticles were considerably smaller than those synthesized from dodecanethiol-capped nanoparticles in sc-toluene, under the same reaction conditions, i.e., 28 nm and σ = 10.3. Differences in the ligand conformations on the surface of the Au nanoparticles and phase separation of the fluorocarbon/CO2 and hydrocarbon/toluene systems gave rise to greater steric stabilization of the fluorous-capped Au nanoparticles in CO2, resulting in small diameter nanowires with a relatively narrow size distribution. Electrical analysis of the nanowires showed them to be p-type (hole) semiconductors.
  - http://pubs.acs.org/journal/cmatex
DA  - 2010/09
ER  - 

@article{V50557658,
   = {Collins, C. and  Koleśnik, M. and  Krstić, V. and  Holmes, J. D.},
   = {2010},
   = {September},
   = {Chemistry of Materials},
   = {Germanium nanowire synthesis from fluorothiolate-capped gold nanoparticles in supercritical carbon dioxide},
   = {Published},
   = {()},
   = {22},
  pages = {5235--5243},
   = {{Ge nanowires seeded from Au nanoparticles capped with fluorothiolate ligands were synthesized in supercritical carbon dioxide (sc-CO2) by the thermal decomposition of diphenylgermane (DPG) at a temperature of 380 C and a pressure of 25.7 MPa. Both perfluorinated and semifluorinated capped Au nanoparticles acted as effective catalysts for growing Ge nanowires, with mean diameters of 11 nm (σ = 2.8) and 14 nm (σ = 3.5), respectively. The mean diameter of the Ge nanowires grown from the fluorous-capped Au nanoparticles were considerably smaller than those synthesized from dodecanethiol-capped nanoparticles in sc-toluene, under the same reaction conditions, i.e., 28 nm and σ = 10.3. Differences in the ligand conformations on the surface of the Au nanoparticles and phase separation of the fluorocarbon/CO2 and hydrocarbon/toluene systems gave rise to greater steric stabilization of the fluorous-capped Au nanoparticles in CO2, resulting in small diameter nanowires with a relatively narrow size distribution. Electrical analysis of the nanowires showed them to be p-type (hole) semiconductors.}},
   = {http://pubs.acs.org/journal/cmatex},
  source = {IRIS}
}