01983nas a2200241   4500008004100000022001400041245009600055210006900151260010500220300001200325490000700337520111900344653002301463653001501486653000901501653001801510653001801528100001901546700002101565700001701586700001501603856012301618       2005                        eng d  a0250-470700aSilver nanoparticles of variable morphology synthesized in aqueous foams as novel templates0 aSilver nanoparticles of variable morphology synthesized in aqueo  aC V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIAbINDIAN ACADEMY SCIENCEScAUG  a503-5100 v283 a<p>In this paper, we describe the synthesis of silver nanocrystals within aqueous foams as a template More specifically, we show that aqueous Ag+ ions may be electrostatically complexed with the anionic surfactants aerosol OT (sodium bis-2-ethylhexyl-sulfosuccinate, (AOT) and sodium dodecyl sulphate (SDS)) in a highly stable liquid foam. After drainage of the foam, the silver ions are reduced in situ by introducing sodium borohydride into the foam by capillary flow. This leads to the formation of silver nanoparticles of spherical, tape- and sheet-like morphology in the foam. The structure of the foam is extremely complex and presents reaction sites of different spatial extent. The differences in foam reaction-site geometry are believed to be responsible for the morphology variation in the silver nanoparticles observed. The silver nanoparticles are observed to be extremely stable in solution suggesting that the AOT or SDS molecules stabilize them. This approach appears promising for application in large-scale synthesis of nanoparticles and may be readily extended to other chemical compositions.</p>10aChemical synthesis10acomposites10afoam10aIntercalation10aNanoparticles1 aMandal, Sujata1 aArumugam, S., K.1 aPasricha, R.1 aSastry, M.  uhttp://library.ncl.res.in/content/silver-nanoparticles-variable-morphology-synthesized-aqueous-foams-novel-templates-001555nas a2200181   4500008004100000022001400041245004300055210004200098260007100140300001200211490000700223520097800230100003001208700002101238700002001259700001501279856007901294       2005                        eng d  a0743-746300aSolvent-adaptable silver nanoparticles0 aSolventadaptable silver nanoparticles  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcFEB  a822-8260 v213 a<p>A simple and efficient way of obtaining silver nanoparticles that are dispersible both in organic and in aqueous solvents using a single capping agent is described. The silver nanoparticles are initially prepared in water in the presence of aerosol OT [sodium bis(2-ethylhexyl)-sulfosuccinate, AOT]. Thereafter, transfer of the AOT-capped silver nanoparticles to an organic phase is induced by the addition of a small amount of orthophosphoric acid during shaking of the biphasic mixture. The AOT-stabilized silver nanoparticles could be separated out from the organic phase in the form of a powder. The hydrophobic nanoparticles thus prepared are stable and are readily resuspended in a variety of other polar (including water) and nonpolar solvents without further surface treatment. The amphiphatic nature of the silver surface is brought about by a small orientational change in the AOT monolayer on the silver surface in response to the polarity of the solvent.</p>1 aPrasad, Bhagavatula L. V.1 aArumugam, S., K.1 aBala, Tanushree1 aSastry, M.  uhttp://library.ncl.res.in/content/solvent-adaptable-silver-nanoparticles-1