01315nas a2200217   4500008004100000022001400041245012200055210006900177260007100246300001600317490000700333520048100340100002000821700001800841700002000859700002500879700002100904700001900925700003000944856012300974       2007                        eng d  a0743-746300aMultiutility sophorolipids as nanoparticle capping agents: synthesis of stable and water dispersible Co nanoparticles0 aMultiutility sophorolipids as nanoparticle capping agents synthe  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcNOV  a11409-114120 v233 a<p>Sophorolipids are a class of glycolipids that can be obtained from fatty acids by simply treating them with yeast cells (Candida bombicola, ATCC 22214) and glucose. In this letter, we demonstrate the application of sophorolipids obtained from oleic acid as a capping agent for Co nanoparticles. Upon capping the nanoparticle surface, the sugar moiety of these sophorolipids is exposed to the solvent environment, making the nanoparticles stable and water-redispersible.</p>1 aKasture, Manasi1 aSingh, Sanjay1 aPatel, Pitamber1 aJoy, Pattayil, Alias1 aPrabhune, Asmita1 aRamana, C., V.1 aPrasad, Bhagavatula L. V.  uhttps://library.ncl.res.in/content/multiutility-sophorolipids-nanoparticle-capping-agents-synthesis-stable-and-water-001738nas a2200205   4500008004100000022001400041245022400055210006900279260011000348300001200458490000700470520079600477100001801273700002001291700002001311700002101331700001901352700003001371856013101401       2009                        eng d  a1144-054600aDirect method for the preparation of glycolipid-metal nanoparticle conjugates: sophorolipids as reducing and capping agents for the synthesis of water re-dispersible silver nanoparticles and their antibacterial activity0 aDirect method for the preparation of glycolipidmetal nanoparticl  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcDEC  a646-6520 v333 a<p>The production of a new class of glycolipid-metal nanoparticle conjugates, namely, sophorolipid reduced/capped silver nanoparticles is demonstrated for the first time, by unveiling the reducing and capping abilities of sophorolipid derived from oleic acid. It is also demonstrated that the sophorolipid capped Ag nanoparticles are highly potent antibacterial agents, against both Gram-positive and Gram-negative bacteria. The utilization of sophorolipid brings out several advantages, such as eliminating the necessity for exogenous reducing agent and imparting better stability to the silver nanoparticles as compared to their oleic acid capped analogues. These sophorolipid capped silver nanoparticles can be obtained as a stable powder that can be re-dispersed in water as desired.</p>1 aSingh, Sanjay1 aPatel, Pitamber1 aJaiswal, Swarna1 aPrabhune, Asmita1 aRamana, C., V.1 aPrasad, Bhagavatula L. V.  uhttps://library.ncl.res.in/content/direct-method-preparation-glycolipid-metal-nanoparticle-conjugates-sophorolipids-reducing-001629nas a2200181   4500008004100000245010100041210006900142260000800211490000800219520096000227100002001187700002001207700002001227700002401247700003001271700001601301856013001317       2010                        eng d00aInvestigation of magnetic anisotropy in Co nanoparticles using ferromagnetic resonance technique0 aInvestigation of magnetic anisotropy in Co nanoparticles using f  cJAN0 v2003 a<p>Using ferromagnetic resonance (FMR) technique, we have investigated the temperature dependence and angular dependence of line width and resonance magnetic field of Co nanoparticles capped with novel alkane carboxylic acids of varying chain lengths. The magnetic properties such as blocking temperature and anisotropy sensitively depend on the chain length as evidenced by the temperature dependence of line width. These results indicate that the magnetic properties of these samples are critically governed by the interparticle interactions which are decided by the chain length. The presence of anisotropy even up to very high temperature above the blocking temperature observed in these studies confirms the presence of inter-particle magnetic interactions as well as intra-particle exchange interaction between the core and shell regions as evidenced by our earlier ac susceptibility and transverse susceptibility measurements on similar system.</p>1 aSendilkumar, A.1 aKasture, Manasi1 aPatel, Pitamber1 aRamana, Chepuri, V.1 aPrasad, Bhagavatula L. V.1 aSrinath, S.  uhttps://library.ncl.res.in/content/investigation-magnetic-anisotropy-co-nanoparticles-using-ferromagnetic-resonance-technique