Research Papers (Prof. C.N.R. Rao): Recent submissions

  • XPS evidence for molecular charge-transfer doping of graphene 
    Choudhury, Debraj; Das, Barun; Sarma, D D; Rao, C N R (Elsevier Science BV, 2010-09-10)
    By employing X-ray photoelectron spectroscopy (XPS), we have been able to establish the occurrence of charge-transfer doping in few-layer graphene covered with electron acceptor (TCNE) and donor (TTF) molecules. We have ...
  • Chemically Bonded Ceramic Oxide Coatings on Carbon Nanotubes and Inorganic Nanowires 
    Gomathi, A; Vivekchand, S R C; Govindaraj, A; Rao, C N R (WILEY-VCH Verlag GmbH, 2005-11-18)
    Acid-treated carbon nanotubes are reacted with metal halides and water and are then calcined to produce a chemically bonded oxide layer of controllable thickness on the nanotubes (see Figure). Similar coatings are prepared ...
  • Inorganic Analogues of Graphene 
    Rao, C N R; Nag, Angshuman (Wiley-VCH Verlag GmbH, 2010-09)
    The discovery of graphene has aroused great interest in the properties and phenomena exhibited by two-dimensional inorganic materials, especially when they comprise only a single, two or a few layers. Graphene-like MoS2 ...
  • Superionic Phase Transition in KHSO4: A Temperature-Dependent Raman Investigation 
    Swain, Diptikanta; Bhadram, Venkata Srinu; Pradhan, Gopal K; Bhat, S Venkataprasad; Narayana, Chandrabhas; Rao, C N R (American Chemical Society, 2010-09-23)
    Temperature-dependent Raman spectroscopic studies have been carried out on KHSO4 single crystals in the temperature range 298-493 K. A structural phase transition driven by the lattice and molecular disorder is observed ...
  • Covalent Functionalization Of Metal Oxide And Carbon Nanostructures With Polyocatasilesesquioxane(POSS) And Their Incorporation In Polymer Composites 
    Gomathia, A; Gopalakrishnan, K; Rao, C N R (Elsevier, 2010-12)
    Polyoctasilsesquioxane (POSS) has been employed to covalently functionalize nanostructures of TiO2, ZnO and Fe2O3 as well as carbon nanotubes, nanodiamond and graphene to enable their dispersion in polar solvents. Covalent ...
  • Synthesis, Structure, and Properties of Mesoporous B/C/N Microspheres 
    Raidongia, Kalyan; Hembram, K P S S; Waghmare, Umesh V; Eswaramoorthy, M; Rao, C N R (Wiley-VCH Verlag Gmbh, 2010)
    Reaction of low surface area carbon with a mixture of urea and boric acid at 930 degrees C yields a composition close to BC4N with a graphitic structure. BC4N was characterized by electron energy loss spectroscopy, X-ray ...
  • Kagome network compounds and their novel magnetic properties 
    Pati, Swapan K; Rao, C N R (Royal Society of Chemistry, 2008)
    Compounds possessing the Kagome network are truly interesting because of their unusual low-energy properties. They exhibit magnetic frustration because of the triangular lattice inherent to the hexagonal bronze structure ...
  • Organically-templated Kagom´e compounds containing two transition metal ions† 
    Nagaraja, C M; Behera, J N; Maji, Tapas K; Pati, Swapan K; Rao, C N R (Royal Society of Chemistry, 2010)
    Kagome compounds containing two transition metal ions, Co-II and Ni-II, in different proportions have been synthesized, and their magnetic properties have been found to exhibit interesting differences.
  • One-step synthesis of high-purity fluorous-capped inorganic nanoparticles 
    Voggu, Rakesh; Shireen, Ajmala; Rao, C N R (Royal Society of Chemistry, 2010)
    Making use of the fact that perfluorohydrocarbon, and hydrocarbon solvents become miscible at high temperatures, highly pure inorganic nanoparticles capped with fluorous labels have been generated in a one-step synthesis. ...
  • Electronic Phase Separation in Correlated Oxides: The Phenomenon,Its Present Status and Future Prospects 
    Shenoy, Vijay B; Sarma, D D; Rao, C N R (Wiley-VCH Verlag GmbH, 2006-10-13)
    Many transition metal oxide materials of high chemical purity are not necessarily monophasic. Thus, single crystals of chemically pure rate earth manganites and cobaltates of the general formula Ln(1-x)AxMO(3) (Ln = rare ...
  • Toward the Rational Design of Open- Framework Materials 
    Cheetham, Anthony K; Rao, C N R (Materials Research Society, 2005-02)
    In spite of the enormous level of interest in open-framework materials (materials with porous channel structures, such as zeolites), the mechanisms by which they are formed are in many cases poorly understood. As a ...
  • New Strategies for the Enrichment of Metallic Single-Walled Carbon Nanotubes 
    Voggu, Rakesh; Ghosh, Sandeep; Govindaraj, A; Rao, C N R (American Scientific Publishers, 2010-06)
    Enrichment of metallic single-walled carbon nanotubes (SWNTs) has been accomplished by several means, including new extraction and synthetic procedures and by interaction with metal nanoparticles as well as electron donor ...
  • Growth Kinetics of ZnO Nanorods: Capping-Dependent Mechanism and Other Interesting Features 
    Biswas, Kanishka; Das, Barun; Rao, C N R (American Chemical Society, 2008-02-21)
    Although the growth of nanocrystals has been investigated by several workers, investigations of the growth of 1-D nanostructures have been limited. We have investigated the growth kinetics of both uncapped and poly(vinyl ...
  • Synthesis and Magnetic Properties of CoO Nanoparticles 
    Ghosh, Moumita; Sampathkumaran, E V; Rao, C N R (American Chemical Society, 2005-05-03)
    Pure CoO nanoparticles in the 4.5-18 nm range have been prepared by the decomposition of Co(II) cupferronate in Decalin at 270 degrees C under solvothermal conditions. The particles have been characterized by X-ray ...
  • Multiferroic and magnetoelectric properties of core-shell CoFe2O4 @ BaTiO3 nanocomposites 
    Raidongia, Kalyan; Nag, Angshuman; Sundaresan, A; Rao, C N R (American Institute of Physics, 2010-08-09)
    Core-shell CoFe2O4@BaTiO3 nanoparticles and nanotubes have been prepared using a combination of solution processing and high temperature calcination. Both the core-shell nanostructures exhibit magnetic and dielectric ...
  • The Liquid–Liquid Interface as a Medium To Generate Nanocrystalline Films of Inorganic Materials 
    Rao, C N R; Kalyanikutty, K P (American Chemical Society, 2008-04)
    Unlike the air-water interface, the organic-aqueous (liquid-liquid) interface has not been exploited sufficiently for materials synthesis. In this Account, we demonstrate how ultrathin nanocrystalline films of metals such ...
  • Coordination Polymers and Hybrid Networks of Different Dimensionalities Formed by Metal Sulfites 
    Rao, K Prabhakara; Rao, C N R (American Chemical Society, 2007-04-02)
    In our effort to explore the use of the sulfite ion to design hybrid and open-framework materials, we have been able to prepare, under hydrothermal conditions, zero-dimensional [Zn(C12H8N2)(SO3)]center dot 2H(2)O, I (a = ...
  • Ferromagnetism in Mn-doped GaN nanocrystals prepared solvothermally at low temperatures 
    Biswas, Kanishka; Sardar, Kripasindhu; Rao, C N R (American Institute of Physics, 2006-08-25)
    3% and 5% Mn-doped GaN nanocrystals of different sizes, with the average diameters in the range of 4-18 nm, have been prepared by two independent routes under solvothermal conditions starting with two different precursors. ...
  • Synthesis of inorganic nanomaterials 
    Rao, C N R; Vivekchand, S R C; Biswasa, Kanishka; Govindaraja, A (Royal Society of Chemistry, 2007)
    Synthesis forms a vital aspect of the science of nanomaterials. In this context, chemical methods have proved to be more effective and versatile than physical methods and have therefore, been employed widely to synthesize ...
  • Hybrid inorganic–organic materials: a new family in condensed matter physics 
    Rao, C N R; Cheetham, A K; Thirumurugan, A (IOP Publishing Ltd, 2008-02-27)
    We review some recent trends in an emerging field at the interface between classical inorganic and organic materials. Hybrid inorganic–organic framework materials are crystalline systems in which both inorganic and organic ...

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