2006: Recent submissions

Now showing items 121-140 of 197

Control of Molecular structure in the generation of Highly Luminescent Liquid Crystalline Perylenebisimide Derivatives: Synthesis, Liquid Crystalline and Photophysical Properties

Jancy, B; Asha, S K (American Chemical Society, 2006)

We report here, for the first time, the role of the molecular design on the liquid crystalline and solid-state photoluminescent properties of soluble and thermally stable liquid crystalline perylenebisimide derivatives. A ...
Photophysical and theoretical investigations of oligo(p-phenyleneethynylene)s: Effect of alkoxy substitution and alkyne-aryl bond rotations

James, P V; Sudeep, P K; Suresh, C H; George Thomas, K (American Chemical Society, 2006)

The unique photophysical, conformational, and electronic properties of two model phenyleneethynylene-based rigid rod molecular systems, possessing dialkoxy substitutions, are reported in comparison with an unsubstituted ...
Isodeoxyelephantopin, a novel sesquiterpene lactone, potentiates apoptosis, inhibits invasion, and abolishes osteoclastogenesis through suppression of nuclear factor-kappa B (NF-kappa B) activation and NF-kappa B-regulated gene expression

Ichikawa, H; Mangalam S Nair; Takada, Y; Alan Sheeja, D B; Suresh Kumar, M A; Oommen, O V; Aggarwal, B B (American Association for Cancer Research, 2006)

Purpose: Deoxyelephantopin (ESD) and isodeoxyelephantopin (ESI) are two sesquiterpene lactones derived from the medicinal plant Elephantopus scaber Linn. (Asteraceae). Although they are used for the treatment of a wide ...
Sugar end-capped polyethylene: Ceric ammonium nitrate initiated oxidation and melt phase grafting of glucose onto polyethylene and its microbial degradation

Gisha, E L; Lissy Jose; Prasad, V S; Pillai, C K S (Elsevier, 2006)

Low density polyethylene (LDPE) was modified to introduce biodegradability by grafting highly hydrophilic monomers (which can act as nutrients for microorganisms) such as glucose by a novel melt phase reaction using Brabender ...
Chitosan/oligo L-lactide graft copolymers: Effect of hydrophobic side chains on the physico-chemical properties and biodegradability

Gisha, E L; Pillai, C K S (Elsevier, 2006)

Graft copolymerization of L-lactide (LLA) onto chitosan (CS) was carried out by ring opening polymerisation using Ti(OBu)(4) as catalyst in DMSO at 90 degrees C in nitrogen atmosphere to obtain chitosan/oligo L-lactide ...
Synthesis and characterization of CeO2-TiO2-Pr6O11 solid solutions for environmentally benign nontoxic red pigments

Giable George; Prabhakar Rao, P; Reddy, M L P (Chemical Society of Japan, 2006)

New inorganic pigments Ce1-(x+y)TixPryO2 (x ranges from 0.05 to 0.195 and y ranges from 0.005 to 0.15) based on CeO2-TiO2-Pr6O11 solid solutions have been synthesized by solid-state route with a goal of preparing environmentally ...
Effect of caffeine and tannins on cultivation and fructification of Pleurotus on coffee husks

Fan, L; Soccol, A T; Pandey, A; de Souza Vandenberghe, L P; Soccol, C R (SOC Brasileira Microbiologia, 2006)

The objective of this work was to study the effect of caffeine and tannins on Pleurotus sp. cultivation and to evaluate the feasibility of using coffee husks as substrate for mushroom cultivation. Eight strains of P. ...
Electrical transport measurements on self-assembled organic molecular wires

Durkut, M; Mas-Torrent, M; Hadley, P; Jonkheijm, P; Schenning, A P H J; Meijer, E W; George, S; Ajayaghosh, A (American Institute of Physics, 2006)

The electrical properties of supermolecular assemblies of oligo(p-phenylene vinylene) were studied. These materials self-assemble into well-defined cylindrical structures in solution with lengths in the range of 100 nm-10 ...
Chemical substitution in Ba(RE1/2Nb1/2)O-3 (RE = La, Nd, Sm, Gd, Tb, and Y) microwave ceramics and its influence on the crystal structure and phonon modes

Dias, A; Abdul Khalam, L; Sebastian, M T; Paschoal, C W A; Moreira, R L (American Chemical Society, 2006)

Raman spectroscopy was employed to evaluate the crystal structure and phonon modes of chemically substituted Ba(RE1/2Nb1/2)O-3 microwave ceramics (RE = La, Nd, Sm, Gd, Tb, and Y). It was verified that these materials could ...
Solid culturing of Bacillus amyloliquefaciens for alpha amylase production

Dhanya, G; Swetha, S; Nampoothiri, K M; Pandey, A (Faculty of Food Technology and Biotechnology, 2006)

Fourteen different agroresidues were screened for alpha amylase production using Bacillus amyloliquefaciens ATCC 23842. Among them, wheat bran (WB) and groundnut oil cake (GOC) in mass ratio of 1:1 was proved as the best ...
Hydrogen bonding and rate enhancement in the photoinduced polymerization of telechelic urethane methacrylates based on a cycloaliphatic system: Tricyclodecane dimethanol

Deepak, V D; Rajan, J; Asha, S K (Wiley, 2006)

A new class of telechelic urethane methacrylic crosslinkers, based on a cycloaliphatic system (tricyclodecane dimethanol and tricyclodecane monomethanol), was synthesized. The synthesis was achieved by a two-step condensation ...
Microstructural imaging and characterization of the mechanical, chemical, thermal, and swelling properties of starch-chitosan blend films

Sindhu Mathew; Brahmakumar, M; Emilia Abraham, T (Wiley, 2006)

Chitosan has wide range of applications as a biomaterial, but barriers still exist to its broader use due to its physical and chemical limitations. The present study evaluated the properties of the polymeric blend films ...
Self-organization-induced three-dimensional honeycomb pattern in structure-controlled bulky methacrylate polymers: Synthesis, morphology, and mechanism of pore formation

Deepak, V D; Asha, S K (American Chemical Society, 2006)

Here we report, for the first time, a novel molecular design for three-dimensional honeycomb structures through a self-organization of hydrogen-bonded bulky anchoring group in a methacrylic polymer backbone. The polymerizable ...
Synthesis and investigation of the effect of nematic phases on the glass-transition behavior of novel cycloaliphatic liquid-crystalline poly(ester amide)s

Deepa, P; Sona, C; Jayakannan, M (Wiley, 2006)

We designed and developed novel cycloaliphatic liquid-crystalline (LC) poly(ester amide)s to investigate the effects of nematic LC phases and hydrogen-bonding interactions on the glass-transition behavior. Three series of ...
Synthesis and liquid crystalline properties of new amide-modified poly(1,4-cyclohexanedimethylene terephthalate)

Deepa, P; Divya, K; Jayakannan, M (Wiley, 2006)

New series of cycloaliphatic poly(ester-amide)s, poly(1,4-cyclohexanedime-thyleneterephthalate-co-1,3-cyclohexanedimethylene terephthalamide), were synthesized through solution polymerization route. The compositions of ...
Microporous polyurethanes: Synthesis and investigation of the mechanism of the pore formation

Deepa, P; Jayakannan, M (Wiley, 2006)

A new approach for microporous polymeric material is developed utilizing the secondary interactions such as hydrogen bonding in the polymer chains in polyurethane systems at ambient conditions. A new series of highly rigid, ...
Relation between growth, respirometric analysis and biopigments production from Monascus by solid-state fermentation

De Carvalho, J C; Pandey, A; Oishi, B O; Brand, D; Rodriguez-Leon, J A; Soccol, C R (Elsevier, 2006)

Solid-state fermentation was carried out to establish relation between growth, respirometric analysis and biopigments production from Monascus sp. in columns and in a drum-type bioreactor with forced air. In these reactors, ...
Role of Mg2+ and Ca2+ in DNA bending: Evidence from an ONIOM-based QM-MM study of a DNA fragment

Neethu Sundaresan; Pillai, C K S; Suresh, C H (American Chemical Society, 2006)

The binding of hydrated Mg2+ and Ca2+ ions with a DNA fragment containing two phosphate groups, three sugar units, and a G, C base pair is modeled in the anion and dianion states using a three-layer ONIOM approach. A ...
A supramolecular ON-OFF-ON fluorescence assay for selective recognition of GTP

Neelakandan, P P; Mahesh Hariharan; Ramaiah, D (American Chemical Society, 2006)
Analogues of the Quararibea metabolite chiral enolic-gamma-lactone from (2S,3S)- and (2S,3R)-tetrahydro-3-hydroxy-5-oxo-2,3-furandicarboxylic acids

Chithra Gopinath; Salini Thomas; Mangalam S Nair; Ibnusaud, I (Elsevier, 2006)

Reaction of dialkyl (2S,3S)- or (2S,3R)-tetrahydro-3-hydroxy-5-oxo-2,3-furandicarboxylates with POCl3 in pyridine followed by diazomethane resulted in the isolation of dialkyl 2S-4-methoxy-5-oxo-2,5-dihydro-2,3-furandica ...

Now showing items 121-140 of 197

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