01547nas a2200229   4500008004100000022001400041245012800055210006900183260007300252300001200325490000800337520068400345100001701029700002501046700001701071700001701088700002101105700001801126700002901144700001701173856012701190       2008                        eng d  a0009-261400aRapid phase-controlled microwave synthesis of nanostructured hierarchical tetragonal and cubic beta-In2S3 dandelion flowers0 aRapid phasecontrolled microwave synthesis of nanostructured hier  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcFEB  a301-3050 v4523 a<p>Phase controlled synthesis of hierarchical nanostructured beta-In2S3 dandelion flowers is realized by a rapid microwave solvothermal process using indium metal, nitric acid and thiourea as precursors. The tetragonal and cubic phases of the compound have been successfully and separately stabilized in the same type of dandelion morphology by using aqueous-mediated and methanol-mediated synthesis, respectively. The possible mechanism responsible for phase control is discussed. Optical properties of the flowers as well as their hydrogen generation capability by photodecomposition of H2S under visible light are also reported. (c) 2007 Elsevier B.V. All rights reserved.</p>1 aNaik, S., D.1 aJagadale, Tushar, C.1 aApte, S., K.1 aSonawane, S.1 aKulkarni, M., V.1 aPatil, S., I.1 aOgale, Satishchandra, B.1 aKale, B., B.  uhttps://library.ncl.res.in/content/rapid-phase-controlled-microwave-synthesis-nanostructured-hierarchical-tetragonal-and-002729nas a2200241   4500008004100000022001400041245011500055210006900170260007300239300001400312490000800326520182600334653002502160653002702185653001602212100002002228700002102248700002102269700002402290700001802314700002302332856013202355       2010                        eng d  a0304-885300aCobalt nanoparticles doped emaraldine salt of polyaniline: a promising room temperature magnetic semiconductor0 aCobalt nanoparticles doped emaraldine salt of polyaniline a prom  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcDEC  a3926-39310 v3223 a<p>Incorporation of magnetic nanoparticles in polymers with organic functional groups working as semiconducting substrate is of immense interest in the field of dilute magnetic semiconductors (DMS) and spintronics. In this article we report on synthesis and evaluation of dilutely doped (0-10 wt%) cobalt nanoparticles in emaraldine salt (ES) of polyaniline in the presence of dodecyl benzene sulfonic acid (DBSA) and p-toluene sulfonic acid (p-TSA) using a sonochemical-assisted-reduction approach as a possible DMS candidate. The X-ray diffraction pattern and high resolution transmission electron microscopy (HRTEM) image show the ES to be polycrystalline, in which 10 nm sized Co nanoparticles get embedded in its FCC structural form. From Fourier transform infrared (FT-IR) and UV-visible (UV-vis) spectroscopy studies, it is predicted that cobalt particles get electrostatically bound to the specific SO(3)(-) ion sites of ES, thereby modifying torsional degrees of freedom of the system. The applied field dependent magnetization study shows that the sample exhibits hysteresis loop with a minimal doping of 3 wt% of Co nanoparticles and increases with the amount of Co nanoparticles in ES due to dipolar interaction. The electron transport data show that with increase in Co wt% there is a gradual shift from ohmic to non-ohmic response to the sample bias, accompanied by opening of electrical hysteresis and an increased resistance. The non-linear response of higher doped systems has been attributed to the combination of direct and Fowler-Nordheim tunneling phenomena in these systems. Persistence of optical and transport properties of the polymer, with an introduction of magnetic moment in the system, envisages the system to be a fine magnetic semiconductor. (C) 2010 Elsevier B.V. All rights reserved.</p>10aCobalt nanoparticles10aMagnetic semiconductor10apolyaniline1 aHatamie, Shadie1 aKulkarni, M., V.1 aKulkarni, S., D.1 aNingthoujam, R., S.1 aVatsa, R., K.1 aKale, Sangeeta, N.  uhttps://library.ncl.res.in/content/cobalt-nanoparticles-doped-emaraldine-salt-polyaniline-promising-room-temperature-magnetic-0