2010: Recent submissions

Now showing items 81-100 of 165

Thermal properties of low loss PTFE-CeO2 dielectric ceramic composites for microwave substrate applications

Anjana, P S; Uma, S; Philip, J; Sebastian, M T (Wiley, 2010)

Polytetrafluroethylene (PTFE) composites filled with CeO2 were prepared by powder processing technique. The PTFE is used as the matrix and the loading fraction of CeO2 in the composite varied up to 0.6 volume fraction. The ...
Conformational control in a bipyridine linked pi-conjugated oligomer: Cation mediated helix unfolding and refolding

Divya, K P; Sreejith, S; Suresh, C H; Ajayaghosh, A (Royal Society of Chemistry, 2010)

A chiral pi-conjugated oligomer having alternate bipyridine and carbazole moieties connected through acetylinic bonds undergoes helical folding in chloroform-acetonitrile (40/60, v/v) as evident by fluorescence and circular ...
Functional cyclophanes: Promising hosts for optical biomolecular recognition

Ramaiah, D; Prakash, P N; Akhil, K N; Rekha, R A (Royal Society of Chemistry, 2010)

Cyclophanes possess a defined cavity size and are efficient in encapsulating and stabilising guest molecules inside the cavity through various non-covalent interactions. This unique property of the cyclophanes has been ...
Polymer-Ceramic composites of 0-3 connectivity for circuits in electronics: A review

Sebastian, M T; Jantunen, H (Wiley, 2010)

Composite technology, where a novel artificial material is fabricated by combining, for example, ceramic and polymer materials in an ordered manner or just by mixing, was earlier used widely for sonar, medical diagnostics, ...
Molecular cloning and homology modelling of a subtilisin-like serine protease from the marine fungus, Engyodontium album BTMFS10

Jasmin, C; Sreeja, C; Rajeev K Sukumaran; Elyas, K K; Sarita, G. B; Chandrasekaran, M (Springer, 2010)

An alkaline protease gene (Eap) was isolated for the first time from a marine fungus, Engyodontium album. Eap consists of an open reading frame of 1,161 bp encoding a prepropeptide consisting of 387 amino acids with a ...
Micropatterned surfaces through moisture-induced phase-separation of polystyrene-clay nanocomposite particles

Bindu, P N; Pavithran, C (American Chemical Society, 2010)

We report micropatterned polystyrene-clay nanocomposite (PCN) surfaces with concavities by moisture-induced phase separation of PCN particles. Micropatterned film with concavity size of 800 nm to 1.3 mu m and a high number ...
Solution phase epitaxial self-assembly and high charge-carrier mobility nanofibers of semiconducting molecular gelators

Prasanthkumar, S; Saeki, A; Seki, S; Ajayaghosh, A (American Chemical Society, 2010)

Trithienylenevinylenes having amide end functional groups form supramolecular gels in nonpolar solvents, comprised of self-assembled nanowires. These gels exhibit the unique property of solution phase epitaxy leading to ...
Palladium-catalyzed bis-functionalization of isatylidenes: A facile route towards spiro-indol-2-ones

George, S C; Jubi John; Anas, S; Joshni John; Yamamoto, Y; Suresh, E; Radhakrishnan, K V (Wiley, 2010)

An effective protocol has been developed for the construction of 3,3-disubstituted indol-2-ones from isatylidenes by utilizing amphiphilic bis-pi-allylpalladium and related intermediates. The developed strategy is a new ...
Production of a highly glucose tolerant beta-glucosidase by Paecilomyces variotii MG3: optimization of fermentation conditions using Plackett-Burman and Box-Behnken experimental designs

Joseph Job; Rajeev K Sukumaran; Jayachandran, K (Springer, 2010)

Beta-Glucosidases (beta-d-glucoside glucohydrolase, 3.2.1.21) are a group of enzymes mainly involved in the hydrolysis of beta-glycosidic bonds connecting carbohydrate residues in different classes of beta-d glycosides. ...
Crystal structure and microwave dielectric properties of LaLuO3 ceramics

Jobin Varghese; Tony Joseph; Sebastian, M T; Reeves-McLaren, N; Feteira, A (Wiley, 2010)

Dense LaLuO3 ceramics were prepared by the conventional solid-state reaction route. Their room-temperature (RT) crystal structure and microwave (MW) dielectric properties were investigated. Rietveld refinements performed ...
Piezoelectric and ferroelectric properties of new Pb9Ce2Ti12O36 and lead-free Ba2NdTi2Nb3O15 ceramics

Burianova, L; Panos, S; Stennett, M C; West, A R; Subodh, G; Sebastian, M T; Kamba, S (Springer, 2010)

In this paper, measurements of the nonlinear ferroelectric, piezoelectric and dielectric properties of Pb9Ce2Ti12O36 (Pb9CTO) and Ba2NdTi2Nb3O15 (BNTN) ferroelectric ceramics are presented. Hysteresis P(E) loops were ...
Long-lived photoinduced charge separation due to the inverted region effect in 1,6-Bis(phenylethynyl)pyrene-phenothiazine dyad

Suneesh, C V; Gopidas, K R (American Chemical Society, 2010)

Photoinduced electron-transfer processes in a 1,6-bis(phenylethynyl)pyrene-phenothaiazine dyad, BPEP-PT, are examined using various techniques. The BPEP singlet excited state is quenched by electron transfer from PT leading ...
Comparison of Aromatic NH ...pi, OH...pi, and CH ...pi Interactions of Alanine using MP2, CCSD, and DFT methods

Neetha, M; Vijayalakshmi, K P; Koga, N; Suresh, C H (John Wiley, 2010)

A comparison of the performance of various density functional methods including long-ranee corrected and dispersion corrected methods [MPW1PW91, B3LYP, B3PW91, B97-D, B1B95, MPWB1K, M06-2X, SVWN5, omega B97XD, long-range ...
Photoinduced charge separation in two Bis(phenylethynyl)anthracene-based triads: Inverted region effect vs distance effect on back electron transfer

Suneesh, C V; Vinayak, M V; Gopidas, K R (American Chemical Society, 2010)

Photoinduced electron transfer processes in two bis(phenylethynyl)anthracene (BPEA)-based triads were investigated to identify the dominating factors that lead to long-lived charge-separated (CS) states in BPEA-based ...
Temperature-compensated LiMgPO(4): A new glass-free low-temperature cofired ceramic

Dhanesh, T; Sebastian, M T (Wiley, 2010)

The feasibility of LiMgPO(4) (LMP) ceramic for low-temperature cofired ceramic (LTCC) application was investigated. The ceramic was prepared by the conventional solid-state ceramic method. The ceramic sintered at 950 degrees ...
NMR studies into colloidal stability and magnetic order in fatty acid stabilised aqueous magnetic fluids

Ghosh, S K; Carty, D; Clarke, S P; Corr, S A; Tekoriute, R; Gun'ko, Y K; Brougham, D F (Royal Society of Chemistry, 2010)

We report the physico-chemical characterisation of fatty acid stabilised aqueous magnetic fluids, which are ideal systems for studying the influence of nanoparticle aggregation on the emergent magnetic resonance properties ...
Appraisal of through-bond and through-space substituent effects via molecular electrostatic potential topography

Sayyed, F B; Suresh, C H; Gadre, S R (American Chemical Society, 2010)

Through-bond (TB) and through-space (TS) substituent effects in substituted alkyl, alkenyl, and alkynyl arenes are quantified separately using molecular electrostatic potential (MESP) topographical analysis. The deepest ...
Novel nontoxic nanopigments based on zirconia and rare earth mixed oxides

Chandini Sam, S P; Prasad, V S; Kumar, K S (Wiley, 2010)

This paper embodies the result of the investigations carried out on the synthesis of zirconia- rare earth mixed oxide pigments: ZrCe(1-x)Y(x)O(4-delta) and ZrCe(1-x)Pr(x)O(4-delta) by the solution combustion method and ...
Highly luminescent poly(methyl methacrylate)-incorporated europium complex supported by a carbazole-based fluorinated beta-diketonate ligand and a 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene oxide co-ligand

Ambili Raj, D B; Biju Francis; Reddy, M L P; Butorac, R R; Lynch, V M; Cowley, A H (American Chemical Society, 2010)

A novel efficient antenna complex of Eu(3+) [Eu(CPFHP)3(DDXPO)] supported by a highly fluorinated carbazole-substituted P-diketonate ligand, namely, 1-(9H-carbazol-2-yl)-4,4,5,5,5-pentafluoro-3-hydroxypent-2-en-1-one (CPFHP) ...
Electrical conductivity and impedance spectroscopy studies of cerium based aeschynite type semiconducting oxides: CeTiMO6 (M = Nb or Ta)

Sumi, S; Prabhakar Rao, P; Deepa, M; Peter Koshy (American Institute of Physics, 2010)

Complex ceramic oxides, CeTiMO6 (M=Nb or Ta) having aeschynite type mineral structure were prepared by the conventional ceramic route. Complex impedance analysis in the frequency range 10 Hz-1 MHz over a wide temperature ...

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