01568nas a2200265   4500008004100000022001400041245007600055210006900131260007400200300001200274490000700286520066600293653002000959653002100979653002201000653002501022100001601047700002901063700001901092700002601111700001901137700001701156700002601173856010301199       2007                        eng d  a0141-549200aNitrate reductase-mediated synthesis of silver nanoparticles from AgNO30 aNitrate reductasemediated synthesis of silver nanoparticles from  aVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDSbSPRINGERcMAR  a439-4450 v293 a<p>Synthesis of silver nanoparticles using alpha-NADPH-dependent nitrate reductase and phytochelatin in vitro has been demonstrated for the first time. The silver ions were reduced in the presence of nitrate reductase, leading to the formation of a stable silver hydrosol 10-25 nm diam. and stabilized by the capping peptide. The nanoparticles were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy and UV-Vis absorption. These studies will help in designing a rational enzymatic strategy for the synthesis of nanomaterials of different chemical composition, shapes and sizes as well as their separation.</p>10aCapping Peptide10aenzymatic method10anitrate reductase10asilver nanoparticles1 aKumar, Anil1 aAbyaneh, Majid, Kazemian1 aGosavi, S., W.1 aKulkarni, Sulabha, K.1 aPasricha, Renu1 aAhmad, Absar1 aKhan, Mohammad, Islam  uhttps://library.ncl.res.in/content/nitrate-reductase-mediated-synthesis-silver-nanoparticles-agno302017nas a2200265   4500008004100000022001400041245010000055210006900155260010200224300001200326490000700338520101700345653001801362653002301380653002201403653003101425100002401456700002801480700002201508700002201530700001901552700002601571700002401597856013001621       2008                        eng d  a0250-470700aNew route for preparation of luminescent mercaptoethanoate capped cadmium selenide quantum dots0 aNew route for preparation of luminescent mercaptoethanoate cappe  aC V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIAbINDIAN ACAD SCIENCEScJUN  a291-2960 v313 a<p>We report a synthesis of cadmium selenide quantum dots (Q-CdSe) by refluxing a mixture of cadmium acetate, selenium powder, sodium sulfite and 2-mercaptoethanol in N,N'-dimethyl formamide (DMF)/water solution. X-ray and electron diffractions suggest the formation of hexagonal phase of size quantized CdSe. Based on TEM analysis, the formation of nanoparticles with an average diameter of 3.5 +/- 0.5 nm is inferred. Their sols in DMF and dimethyl sulphoxide (DMSO) gave characteristic absorption peaks at 300 nm and 327 nm, which is attributed to the formation of high quality, size quantized CdSe particles. Extracted particles from the sol were readily redispersed in DMF and DMSO, which were diluted further with water without losing their optical and colloidal properties. FTIR spectroscopy suggested the formation of 2-mercaptoethanol thiolate on the particle surface, with free -OH groups available for linkage. Sols in DMSO and their solutions in water displayed an intense photoluminescence (PL).</p>10achalcogenides10aChemical synthesis10aphotoluminescence10asemiconductor quantum dots1 aWankhede, Manoj, E.1 aInamdar, Shaukatali, N.1 aDeshpande, Aparna1 aThete, Aniket, R.1 aPasricha, Renu1 aKulkarni, Sulabha, K.1 aHarani, Santosh, K.  uhttps://library.ncl.res.in/content/new-route-preparation-luminescent-mercaptoethanoate-capped-cadmium-selenide-quantum-dots-0