@article { ISI:000240012600023, title = {Thermally assisted semiconductor-like to insulator transition in gold-poly(methyl methacrylate) nanocomposites}, journal = {Nanotechnology}, volume = {17}, number = {16}, year = {2006}, month = {AUG}, pages = {Article No. 4129-4134}, publisher = {IOP PUBLISHING LTD}, type = {Article}, address = {DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND}, abstract = {

Gold-polymethylmethacrylate ( PMMA) nanocomposites were fabricated by mixing gold nanoparticles capped with oleylamine in polymethylmethacrylate. The samples were analysed using UV-vis absorption spectroscopy, transmission electron microscopy, small angle x-ray scattering, Fourier transform infrared spectrometry ( FTIR) and x-ray photoelectron spectroscopy ( XPS). Electrical resistivity of nanocomposite samples was measured by a four-probe technique in the 70-300 K range. The nanocomposites showed a transition with an onset at similar to 160-165 K. They exhibited a semiconductor-like conductivity at higher temperatures and nearly temperature independent conductivity at lower temperatures. The interfacial interaction of Au nanoparticles and PMMA polymer is investigated using FTIR and XPS. A ligand-exchange process occurs when capped gold nanoparticles are incorporated in PMMA polymer.

}, issn = {0957-4484}, doi = {10.1088/0957-4484/17/16/023}, author = {Abyaneh, Majid Kazemian and Pasricha, Renu and Gosavi, S. W. and Kulkarni, S. K.} } @article { ISI:000252406100012, title = {CdS quantum dots: enzyme mediated in vitro synthesis, characterization and conjugation with plant lectins}, journal = {Journal of Biomedical Nanotechnology}, volume = {3}, number = {4}, year = {2007}, month = {DEC}, pages = {406-413}, publisher = {AMER SCIENTIFIC PUBLISHERS}, type = {Article}, address = {25650 NORTH LEWIS WAY, STEVENSON RANCH, CA 91381-1439 USA}, abstract = {

This paper presents the in vitro synthesis of CdS quantum dot nanoparticles using sulphite reductase and capping peptide in the presence of a co-factor alpha-NADPH, their characterization and conjugation with plant lectins, Jacalin and Chick pea lectin. Incubation of sulphite reductase with aqueous CdCl2, Na2SO3, and capping peptide in the presence of a-NADPH, which acts as a co-factor, resulted in the formation of CdS nanoparticles of dimensions 5-20 nm. These CdS nanoparticles were conjugated with plant lectins by EDAC mediated coupling. These observations are of significance, as it will help in the development of eco-friendly process for the formation of CdS nanoparticles and their application as fluorescent biolabels. Moreover the above studies will also help in designing a rational enzymatic strategy for the synthesis of nanomaterials of different chemical composition, shapes and sizes as well as their separation.

}, keywords = {bio-label, CdS quantum dots, conjugation, Enzyme, in vitro synthesis, Nanoparticles}, issn = {1550-7033}, doi = {10.1166/jbn.2007.045}, author = {Ansary, Abu Ayoobul and Kumar, S. Anil and Krishnasastry, M. V. and Abyaneh, Majid Kazemian and Kulkarni, Sulabha K. and Ahmad, Absar and Khan, Mohammad Islam} } @article { ISI:000244293000015, title = {Nitrate reductase-mediated synthesis of silver nanoparticles from AgNO3}, journal = {Biotechnology Letters}, volume = {29}, number = {3}, year = {2007}, month = {MAR}, pages = {439-445}, publisher = {SPRINGER}, type = {Article}, address = {VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS}, abstract = {

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.

}, keywords = {Capping Peptide, enzymatic method, nitrate reductase, silver nanoparticles}, issn = {0141-5492}, doi = {10.1007/s10529-006-9256-7}, author = {Kumar, S. Anil and Abyaneh, Majid Kazemian and Gosavi, S. W. and Kulkarni, Sulabha K. and Pasricha, Renu and Ahmad, Absar and Khan, Mohammad Islam} } @article { ISI:000248795100038, title = {Titania nanoparticles synthesis in mesoporous molecular sieve MCM-41}, journal = {Journal of Colloid and Interface Science}, volume = {314}, number = {1}, year = {2007}, month = {OCT}, pages = {310-316}, publisher = {ACADEMIC PRESS INC ELSEVIER SCIENCE}, type = {Article}, address = {525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA}, abstract = {

Nanocrystalline titanium oxide (TiO2) is one of the most useful oxide material, because of its widespread applications in photocatalysis, solar energy conversion, sensors and optoelectronics. The control of particle size and monodispersity of TiO2 nanoparticles is a challenging task. The use of MCM-41, an inorganic template of uniform pore size (2-10 nm), can overcome this difficulty and produce stable nanoparticles of uniform size and shape. Here, we demonstrate the synthesis of titania nanoparticles inside the pores of silica based MCM-41 forming a TiO2/Si-MCM composite. Composites are formed in the alcoholic medium by incipient wetness impregnation method. Titania particles of average 3 nm size are obtained. Effect of silica and titania precursors on the quality of nanoparticles has been investigated. The characterization of titania-MCM-41 composites has been carried out using a variety of techniques like UV-vis absorption spectroscopy, X-ray diffraction, FT-IR spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy and photoluminescence spectroscopy. It has been found that the titania particles are co-ordinated with Si-MCM by Si-O-Ti covalent bond. (C) 2007 Elsevier Inc. All rights reserved.

}, keywords = {incipient wetness impregnation, Mesoporous material, template, titania}, issn = {0021-9797}, doi = {10.1016/j.jcis.2007.05.069}, author = {Lihitkar, N. B. and Abyaneh, Majid Kazemian and Samuel, V. and Pasricha, R. and Gosavi, S. W. and Kulkarni, S. K.} } @article { ISI:000258195800007, title = {Low temperature synthesis of ZnSe nanoparticles}, journal = {Materials Letters}, volume = {62}, number = {23}, year = {2008}, month = {AUG}, pages = {3803-3805}, publisher = {ELSEVIER SCIENCE BV}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

Synthesis of thioglycerol capped zinc selenide nanoparticles with a relatively narrow size distribution by a simple and inexpensive low temperature (similar to 80 degrees C) wet chemical method is reported here. Main advantage of this method is the use of non-toxic precursors. The size of the nanoparticles can be varied easily by changing the concentration of the capping agent. The extracted nanoparticles remain stable under normal atmospheric conditions and can be redispersed in suitable solvents. The sharp absorption features obtained in the UV-Visible absorption spectra reveal the formation of monodispersed ZnSe nanoparticles. The nanoparticles were characterized using X-ray photoelectron spectroscopy, X-ray diffraction, UV-Visible absorption spectroscopy, photoluminescence and transmission electron microscopy. (C) 2008 Elsevier B.V. All rights reserved.

}, keywords = {Luminescence, Nanomaterials, Semiconductor, X-ray techniques}, issn = {0167-577X}, doi = {10.1016/j.matlet.2008.04.082}, author = {Deshpande, Aparna and Singh, Shashi B. and Abyaneh, Majid Kazemian and Pasricha, Renu and Kulkarni, S. K.} }