Prof. C.N.R. Rao's Publications: Recent submissions

  • Solution-mediated synthesis of a three-dimensional zinc phosphate in the presence of a monoamine 
    Ayi, Ayi A; Choudhury, Amitava; Natarajan, Srinivasan; Rao, C N R (Royal Society of Chemistry, 2000)
    A new open-framework zinc phosphate of the formula [C2H5NH3](2)[Zn-2(HPO4)(3)], I, has been synthesized at 60 degreesC in a THF-water medium in the presence of ethylamine. The structure consists of a network of strictly ...
  • An Experimental Charge Density Study of the Effect of the Noncentric Crystal Field on the Molecular Properties of Organic NLO Materials 
    Gopalan, R Srinivasa; Kulkarni, G U; Rao, C N R (WILEY-VCH Verlag GmbH, 2000-11-03)
    The structure, packing, and charge distribution in molecules of nonlinear optical materials have been analysed with reference to their counterparts in centrosymmetric structures based on low temperature X-ray measurements. ...
  • An experimental charge density study of aliphatic dicarboxylic acids 
    Gopalan, R Srinivasa; Kumaradhas, P; Kulkarni, G U; Rao, C N R (Elsevier Science BV, 2000-03-28)
    By employing reliable structural data on malonic, succinic, glutaric, adipic and pimelic acids, obtained by a single crystal Xray crystallographic study of these systems (using a CCD detector), the total electron densities ...
  • A novel hybrid layer compound containing silver sheets and an organic spacer 
    Rao, C N R; Ranganathan, Anupama; Pedireddi, V R; Raju, A R (Royal Society of Chemistry, 2000)
    A novel compound of the formula Ag-2. CA (CA = cyanuric acid) possessing Ag sheets and hydrogen-bonded CA chains, exhibits anisotropic conductivity and acts as an infinite parallel plate capacitor with a high dielectric constant.
  • Formation of One-, Two-, and Three-Dimensional Open-Framework Zinc Phosphates in the Presence of a Tetramine 
    Choudhury, Amitava; Natarajan, Srinivasan; Rao, C N R (American Chemical Society, 2000-09-18)
    Five new open-framework zinc phosphates, encompassing the entire hierarchy of open-framework structures, have been synthesized hydrothermally in the presence of triethylenetetramine. The structures include one-dimensional ...
  • Experimental and theoretical electronic charge densities in molecular crystals 
    Kulkarni, G U; Gopalan, R S; Rao, C N R (Elsevier Science BV, 2000-04-03)
    Electronic charge density distribution in molecular systems has been described in terms of the topological properties. After briefly reviewing methods of obtaining charge densities from X-ray diffraction and theory, typical ...
  • Metal nanoparticles, nanowires, and carbon nanotubes 
    Rao, C N R; Kulkarni, G U; Govindaraj, A; Satishkumar, B C; Thomas, P John (International Union Pure Applied Chemistry, 2000-01)
    The size-dependent metal to nonmetal transition in metal nanoparticles has been investigated using photoelectron and tunneling spectroscopic techniques. Metal nanoparticles capped by thiols are shown to organize into ordered ...
  • Metal nanoparticles and their assemblies 
    Rao, C N R; Kulkarni, G U; Thomas, P John; Edwards, Peter P (Royal Society of Chemistry, 2000-01)
    Metal nanoparticles of varying sizes can be prepared by physical as well as chemical methods. They exhibit many fascinating properties, the size-dependent metal to nonmetal transition being an important one. Metal nanoparticles ...
  • Interaction of carbon monoxide with Cu-Pd and Cu-Ni bimetallic clusters 
    Vinod, C P; Harikumar, K R; Kulkarni, G U; Rao, C N R (Baltzer Science Publishers BV, 2000)
    Interaction of CO with Cu-Pd and Cu-Ni bimetallic clusters deposited on a ZnO substrate has been investigated by core-level spectroscopy. The surface reactivity of both these alloy clusters increases with the decrease in ...
  • An indigenous cluster beam apparatus with a reflectron time-of-flight mass spectrometer 
    Raina, G; Kulkarni, G U; Yadav, R T; Ramamurthy, V S; Rao, C N R (Indian Academy of Sciences, 2000-04)
    The design and fabrication of a Smalley-type cluster source in combination with a reflectron based time-of-flight (TOF) mass spectrometer are reported. The generation of clusters is based on supersonic jet expansion of ...
  • Effect of size on the Coulomb staircase phenomenon in metal nanocrystals 
    Thomas, P John; Kulkarni, G U; Rao, C N R (Elsevier Science BV, 2000-04-21)
    The Coulomb staircase in polymer-covered Pd and Au nanocrystals of varying diameters in the 1.7-6.4 nm has been investigated by employing tunneling conductance measurements. Charging up to several electrons is observed at ...
  • An Investigation of Two-Dimensional Arrays of Thiolized Pd Nanocrystals 
    Thomas, P John; Kulkarni, G U; Rao, C N R (American Chemical Society, 2000-08-31)
    Two-dimensional arrays of Pd nanocrystals of varying diameters (1.8-6.0 nm) have been obtained after thiolization with alkane thiols of different chain lengths (C-4-C-16) The stability and structure of these arrays have ...
  • Nanotubes and nanowires 
    Rao, C N R; Govindaraj, A (Indian Academy of Sciences, 2001-09)
    Synthesis and characterization of nanotubes and nanowires constitute an important part of nanoscience since these materials are essential building units for several devices. We have prepared aligned carbon nanotube bundles ...
  • Graphene: Synthesis, Functionalization and Properties 
    Rao, C N R; Subrahmanyam, K S; Matte, H S S Ramakrishna; Govindaraj, A (World Scientific Publishing Co PTE Ltd, 2011-03-20)
    Graphenes with varying number of layers can be synthesized by different strategies. Thus, single-layer graphene is obtained by the reduction of single layer graphene oxide, CVD and other methods besides micromechanical ...
  • Pressure-induced reversible transformation in single-wall carbon nanotube bundles studied by Raman spectroscopy 
    Teredesai, Pallavi V; Sood, A K; Muthu, D V S; Sen, R; Govindaraj, A; Rao, C N R (Elsevier Science BV, 2000-03-17)
    We report our high-pressure Raman studies on single-wall carbon nanotube bundles carried out up to 25.9 GPa. The intensity of the radial modes decreases more drastically as compared to that of the tangential modes. The ...
  • Science and technology of nanomaterials: current status and future prospects 
    Rao, C N R; Cheetham, A K (Royal Society of Chemistry, 2001)
    The science and technology of nanomaterials has created great excitement and expectations in the last few years. By its very nature, the subject is of immense academic interest, having to do with very tiny objects in the ...
  • Simple Synthesis of MoS2 and WS2 Nanotubes 
    Nath, Manashi; Govindaraj, Achutharao; Rao, C N R (WILEY-VCH Verlag GmbH, 2001-02-19)
    Trisulfide molybdenum complexes have been employed to produce nanotubes by simple heating in a stream of hydrogen. Bamboo-like stacking (see Figure) was observed, suggesting that the stimulus for the growth of MoS2 nanotubes ...
  • Ferromagnetism Exhibited by Nanoparticles of Noble Metals 
    Maitra, Urmimala; Das, Barun; Kumar, Nitesh; Sundaresan, Athinarayanan; Rao, C N R (Wiley-Blackwell, 2011-08-22)
    Gold nanoparticles with average diameters in the range 2.515 nm, prepared at the organic/aqueous interface by using tetrakis( hydroxymethyl) phosphonium chloride (THPC) as reducing agent, exhibit ferromagnetism whereby the ...
  • Optical limiting in single-walled carbon nanotube suspensions 
    Mishra, S R; Rawat, H S; Mehendale, S C; Rustagi, K C; Sood, A K; Bandyopadhyay, Ranjini; Govindaraj, A; Rao, C N R (Elsevier Science BV, 2000-01-04)
    Optical limiting behaviour of suspensions of single-walled carbon nanotubes in water, ethanol and ethylene glycol is reported. Experiments with 532 nm, 15 ns duration laser pulses show that optical limiting occurs mainly ...
  • Synthesis, characterization and spectroscopy of composites of graphene with CdSe and CdS nanoparticles 
    Moses, Kota; Panchakarla, L S; Matte, H S S Ramakrishna; Govindarao, Bolla; Rao, C N R (National Institute of Science Communication and Information Resources, 2011-09)
    Nanocomposites of few-layer graphene with nanoparticles of CdSe and CdS have been synthesized by two different methods, one involving ultrasonication of a mixture of graphene and the chalcogenide nanoparticles, and another ...

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