2008: Recent submissions

Now showing items 101-120 of 172

Polyurethane-oligo(phenylenevinylene) random copolymers: pi-conjugated pores, vesicles, and nanospheres via solvent-induced self-organization

Deepa, P; Jayakannan, M (Wiley, 2008)

We report a new series of polyurethane-oligo(phenylenevinylene) (OPV) random copolymers and their self-assembled nanomaterials such as pores, vesicles, and luminescent spheres. The polymers were synthesized through melt ...
Effects of organic solvents on immobilized lipase in pectin microspheres

Costas, L; Bosio, V E; Pandey, A; Castro, G R (Springer, 2008)

Lipase from Brevibacillus agri 52 was found stable up to 90% diethylenglycol (DEG), glycerol (GLY), and 1,2 propanediol (1,2 PRO) at 37 degrees C for 1 h and the stability was reduced only approximately 20% after 12 h ...
Batch fermentation model of propionic acid production by propionibacterium acidipropionici in different carbon sources

Coral, J; Karp, S G; Vandenberghe, Luciana P S; Parada, J L; Pandey, A; Soccol, C R (Springer, 2008)

Propionic acid (PA) is widely used as additive in animal feed and also in the manufacturing of cellulose-based plastics, herbicides, and perfumes. Salts of propionic acid are used as preservative in food. PA is mainly ...
Experimental results for the rheological and rheoloptical behavior of poly(ethylene terephthalate)/liquid-crystalline polymer blends

Cidade, M T; Menon, A R R; Leal, C R; Pillai, C K S (Wiley, 2008)

The use of thermoplastic/liquid-crystalline polymer (LCP) blends is recognized as a good strategy for reducing viscosity and improving mechanical properties relative to pure thermoplastics. This improvement, however, is ...
Solvent-induced aggregation and cation-controlled self-assembly of tripodal squaraine dyes: Optical, chiroptical and morphological properties

Chithra, P; Regi Varghese; Divya, K P; Ajayaghosh, A (Wiley, 2008)

The synthesis, characterisation, optical, chiroptical, aggregation, and alkaline earth metal cation assisted self-assembly properties of tripodal squaraine dyes have been described. In the tripodal geometry, these dyes ...
Thermodynamics and kinetics of the formation of Al(2)O(3)/MgAl(2)O(4)/MgO in al-silica metal matrix composite

Sreekumar, V M; Ravi, K R; Pillai, R M; Pai, B C; Chakraborty, M (Springer, 2008)

The formation of Al(2)O(3), MgAl(2)O(4), and MgO has been widely studied in different Al base metal matrix composites, but the studies on thermodynamic aspects of the Al(2)O(3)/ MgAl(2)O(4)/MgO phase equilibria have been ...
Microstructural development in Al/MgAl2O4 in situ metal matrix composite using value-added silica sources

Sreekumar, V M; Pillai, R M; Pai, B C; Chakraborty, M (IOP Publishing, 2008)

Al/MgAl2O4 in situ metal matrix composites have been synthesized using value-added silica sources (microsilica and rice husk ash) containing similar to 97% SiO2 in Al-5 wt.% Mg alloy. The thermodynamics and kinetics of ...
Evolution of MgAl2O4 crystals in Al-Mg-SiO2 composites

Sreekumar, V M; Pillai, R M; Pai, B C; Chakraborty, M (Springer, 2008)

The present study analyzes the morphological transformations of reaction products i.e., MgO, MgAl2O4 occurring during the reaction between SiO2 and Al-Mg alloy in Al-Mg-SiO2 composite processed by the liquid metallurgy ...
A near-infrared squaraine dye as a latent ratiometric fluorophore for the detection of aminothiol content in blood plasma

Sreejith, S; Divya, K P; Ajayaghosh, A (Wiley, 2008)
Detection of zinc ions under aqueous conditions using chirality assisted solid-state fluorescence of a bipyridyl based fluorophore

Sreejith, S; Divya, K P; Ajayaghosh, A (Royal Society of Chemistry, 2008)

A pyrrole end-capped bipyridyl ligand 1a incorporating a chiral handle exhibited high solid-state emission when compared to the achiral analogue 1b and to the racemic molecule 1c which allowed the design of a reusable ...
Phytase production using citric pulp and other residues of the agroindustry in SSF by fungal isolates

Spier, M R; Greiner, R; Rodriguez-Leon, J A; Woiciechowski, A L; Pandey, A; Soccol, V T; Soccol, C R (Faculty Food Technology, 2008)

Phytases have important applications in human and animal nutrition because they hydrolyze the phytate present in legumes, cereal grains and oil seeds. This results in an increased availability of minerals, trace elements ...
Molecular packing and solid-state fluorescence of alkoxy-cyano substituted diphenylbutadienes: Structure of the luminescent aggregates

Riju Davis; Saleesh Kumar, N S; Shibu Abraham; Suresh, C H; Rath, N P; Tamaoki, N; Suresh Das (American Chemical Society, 2008)

A detailed study on the photophysical properties of a series of alkoxy substituted diphenylbutadienes in solution and in the solid state providing a molecular level understanding of the factors controlling their solid-state ...
Antioxidant efficacy of phytochemical extracts from defatted rice bran in in-vitro model emulsions

Renuka Devi, R; Jayalekshmy, A; Arumughan, C (Wiley, 2008)

Defatted rice bran (DRB) is the byproduct of rice bran oil extraction. On HPLC analysis, methanolic extracts prepared from DRB was found to contain oryzanols (OYL), tocols and ferulic acid (FA). Solvent fractionation was ...
1D molecular ladder of the ionic complex of terbium-4-sebacoylbis(1-phenyl-3-methyl-5-pyrazolonate) and sodium dibenzo-18-crown-6: Synthesis, crystal structure, and photophysical properties

Remya, P N; Biju, S; Reddy, M L P; Cowley, A H; Findlater, M (American Chemical Society, 2008)

On the basis of the novel heterocyclic beta-diketone, 4-sebacoylbis(1-phenyl-3-methyl-5-pyrazolone (H2SbBP), three new lanthanide complexes Tb-2(SbBP)(3)(H2O)(2) (1), Gd-2(SbBP)(3)(H2O)(2) (2), and [Tb(SbBP)(2)] [Na(DB18C6)H2O] ...
Infrared absorbing croconaine dyes: Synthesis and metal ion binding properties

Rekha, R A; Jyothish, K; Ramaiah, D (American Chemical Society, 2008)

Quinaldine-based croconaine dyes synthesized by the condensation reaction between croconic acid and the respective quinaldinium salts are described. These dyes exhibit absorption maximum in the infrared region (840-870 nm) ...
Synthesis and FTIR spectroscopic investigation of the UV curing kinetics of telechelic urethane methacrylate crosslinkers based on the renewable resource-cardanol

Rekha, N; Asha, S K (Wiley, 2008)

UV curable telechelic urethane-methacrylate crosslinkers based on the natural resource-cardanol was synthesized in a one pot synthetic step involving end capping of isophorone diisocyanate with one equivalent of hydroxyethyl ...
Ca(4)La(2)Ti(5)O(17): a novel low loss dielectric ceramics in the CaO-La(2)O(3)-TiO(2) system

Rejini, R; Subodh, G; Sebastian, M T (Springer, 2008)

A novel low loss dielectric material Ca(4)La(2)Ti(5)O(17) was prepared by solid state ceramic route. The structure and microstructure of the Ca(4)La(2)Ti(5)O(17) ceramics was investigated using XRD, SEM and EDX techniques. ...
Synthesis and characterization of rubber-seed-oil-based polyurethanes

Bakare, I O; Pavithran, C; Okieimen, F E; Pillai, C K S (Wiley, 2008)

Novel biobased polyurethanes were synthesized from rubber seed oil (RSO), a renewable resource. The RSO monoglyceride, together with xylene and hexamethylene diisocyanate (HMDI), was employed to synthesize the desired ...
Self-assembly of oligo(para-phenylenevinylene)s through arene-perfluoroarene interactions: pi gels with longitudinally controlled fiber growth and supramolecular exciplex-mediated enhanced emission

Babu, S S; Praveen, V K; Prasanthkumar, S; Ajayaghosh, A (Wiley, 2008)

The arene-perfluoroarene (Ar(H)-Ar(F)) interaction. which has been extensively studied in the field of solid-state chemistry. is exploited in the hierarchical self-assembly of oligo(para-phenylenevinylcne)s (OPVs) with ...
Noncovalent macromolecular architectures of oligo(p-phenylenevinylene)s (OPVs): Role of end functional groups on the gelation of organic solvents

Babu, S S; Praveen, V K; Ajayaghosh, A (Wiley, 2008)

Self-assembly of a few OPV derivatives having different end functional groups to aggregates, fibrous networks and organogels are discussed. OPV1 and OPV2 functionalized with ester moieties form gels in nonpolar hydrocarbon ...

Now showing items 101-120 of 172

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