2005: Recent submissions

Now showing items 21-40 of 107

Self-assembled nanotapes of oligo(p-phenylene vinylene)s: Sol-gel controlled optical properties in fluorescent pi-electronic gels

Subi J George; Ajayaghosh, A (Wiley, 2005)

A rational approach to the design of supramolecular organogels of all-trans oligo(p-phenylene vinylene)(OPV) derivatives, a class of well-known organic semiconductor precursors, is reported. Self-assembly of these molecules ...
L-strip-fed wideband rectangular dielectric resonator antenna

Sreedevi K Menon; Lethakumary, B; Bijumon, P V; Sebastian, M T; Mohanan, P (Wiley-Blackwell, 2005)

In this paper, the advantages of using L-shaped microstrip feed to excite a rectangular dielectric resonator antenna (DRA) by electromagnetic coupling are presented. This feeding technique enhances the bandwidth and gain ...
Synthesis of heterogeneous phosphine-free palladium-based catalyst assemblies via solid phase extraction and their characterization

Sobhi Daniel; Prabhakara Rao, P; Nandakumar, M; Prasada Rao, T (Elsevier Science, 2005)

The synthesis of heterogeneous phosphine-free palladium-based catalyst materials was accomplished in a straightforward, two-step reaction using solid phase extraction. This involves functionalization of solid inorganic ...
Preconcentrative separation of palladium(II) using palladium(II) ion-imprinted polymer particles formed with different quinoline derivatives and evaluation of binding parameters based on adsorption isotherm models

Sobhi Daniel; Prem E J Babu; Prasada Rao, T (Elsevier Science, 2005)

Palladium(II) ion-imprinted polymer (IIP) materials were synthesized by thermally polymerizing the ternary complexes of palladium(II) with amino (AQ) or hydroxy (HQ) or mercapto (MQ) derivatives of quinoline and 4-vinyl-pyridine. ...
Synthesis, characterization, and hyperpolarizability measurements of main-chain azobenzene molecules

Smitha, P; Asha, S K; Pillai, C K S (Wiley-Blackwell, 2005)

A series of new AB type azobenzene monomers based on various substituted phenols and higher order fused/extended aromatic rings were synthesized and their hyper-polarizability tensor beta determined by hyper-Rayleigh ...
Montmorillonite K10 clay-catalyzed synthesis of substituted 1-aryl indenes from Baylis-Hillman adducts

Shanmugam, P; Rajasingh, P (The Chemical Society of Japan, 2005)

An eco-friend method for the synthesis of 1-aryl indenes from Baylis-Hillman adducts using Mont. K10 and microwave combination as catalyst system and a procedure for the synthesis of beta- phenyl-substituted-protected ...
Stereoselective synthesis of tri- and tetrasubstituted oxepanes via n-Bu3SnH mediated 7-endo-trig vinyl radical cyclisation

Shanmugam, P; Rajasingh, P (Pergamon-Elsevier Science, 2005)

A stereoselective 7-endo-trig cyclisation of homopropargyl and phenyl homopropargyl] derivatives of Baylis-Hillman adducts using n-Bu3SnH/AlBN mediated vinyl radical cyclisation affords tri- and tetrasubstituted oxepanes, ...
Comparative evaluation of neutral protease production by Aspergillus oryzae in submerged and solid-state fermentation

Sandhya, C; Sumantha, A; Szakacs, G; Pandey, A (Elsevier Science, 2005)

A comparative study was carried out on the production of neutral protease using agro-industrial residues as substrate in solid-state fermentation (SSF) and submerged fermentation (SmF). Seven fungal cultures, viz. three ...
Dye sensitization of nanocrystalline TiO2: enhanced efficiency of unsymmetrical versus symmetrical squaraine dyes

Saji Alex; Santhosh, U; Suresh Das (Elsevier Science, 2005)

A series of novel symmetrical and unsymmetrical squaraine dyes have been synthesized and their comparative efficiencies as photosensitizers in dye sensitized solar cells (DSSCs) containing nanocrystalline TiO2 photoelectrodes ...
Studies on the production of feruloyl esterase from cereal brans and sugar cane bagasse by microbial fermentation

Sindhu Mathew; Emilia Abraham, T (Elsevier Science, 2005)

Production of ferulic acid. a precursor of vanillin from cereal bran is an attractive option due to the high price and demand for natural vanillin in the international arena and feruloyl esterase has been identified as the ...
L(+)-Lactic acid production using Lactobacillus casei in solid-state fermentation

Rojan, P J; Nampoothiri, K M; Athira Syamaprasad Nair; Pandey, A (Springer, 2005)

Lactobacillus casei was grown at 37 degrees C on sugarcane bagasse (5 g) soaked with cassava starch hydrolysate (final moistening volume 34 ml) containing 3 g reducing sugar in a solid-state condition. The maximum yield ...
Fluorescent aggregates of 1-(p-butyloxyphenyl)-4-(p-cyanophenyl)buta-1E,3E-diene: Temperature sensing and photoimaging applications

Riju Davis; Suresh Das (Springer/Plenum Publishers, 2005)

The use of fluorescent solid films of a 1-(p-butyloxyphenyl)-4-(p-cyanophenyl)buta-1E, 3E-diene as an efficient temperature sensor is described. The fluorescence changes in these films are proposed to occur due to a ...
Effect of polymethylene chain length of 4-acylbis(1-phenyl-3-methyl-5-pyrazolones) on the extraction of vanadium(V): Synergistic effect with neutral organophosphorus extractants

Remya, P N; Rani Pavithran; Reddy, M L P (Taylor & Francis Inc., 2005)

Various 4-acylbis(1-phenyl-3-methyl-5-pyrazolones), namely, 4-adipoylbis(1-phenyl-3-methyl-5-pyrazolone) (H(2)AdBP), 4-sebacoylbis(1-phenyl-3-methyl-5-pyrazolone) (H2SbBP) and 4-dodecandioylbis(1-phenyl-3-methyl-5-pyrazolone) ...
Purification and characterization of tannin acyl hydrolase from Aspergillus niger ATCC 16620

Sabu, A; Kiran, G S; Pandey, A (Faculty of Food Technology and Biotechnology, University of Zagreb, 2005)

Tannin acyl hydrolase produced extracellularly by the fungal strain Aspergillus niger ATTC 16620 in solid state fermentation was purified from the cell free culture broth by ammonium sulphate fractionation followed by ...
Photoisomerisation of dibenzobarrelenes - a facile route to polycyclic synthons

Ramaiah, D; Sajimon, M C; Joshy Joseph; George, M V (Royal Society of Chemistry, 2005)

Triplet state mediated di-pi-methane rearrangements of dibenzobarrelenes give a variety of interesting synthons, formed as primary and secondary photoproducts. These synthons could find use for the synthesis of complex ...
A novel process for physically refining rice bran oil through simultaneous degumming and dewaxing

Rajam, L; Soban Kumar, D R; Sundaresan, A; Arumughan, C (American Oil Chemists' Society, 2005)

A new process for the physical refining of rice bran oil through combined degumming and dewaxing was developed on a laboratory scale and then demonstrated on a commercial scale. The simultaneous degumming and dewaxing of ...
[6+3] cycloaddition of fulvenes with 3-oxidopyrylium betaine: a novel methodology for the synthesis of fused cyclooctanoid natural products

Radhakrishnan, K V; Syam Krishnan, K; Bhadbhade, M M; Bhosekar, G V (Elsevier, 2005)

Fulvenes undergo an easy [6+3] cycloaddition with 3-oxidopyrylium betaines leading to 5-8 fused oxabridged cyclooetanoids.
Correlation between surface properties and catalytic activity of clay catalysts

Pushpaletha, P; Rugmini Sukumar; Lalithambika, M (Elsevier Science, 2005)

Surface properties always have a strong hearing on catalytic activity. Modification using mineral acids results in the variation of properties like acidity, cation exchange capacity, Surface area and porosity of a clay ...
Solid phase extraction preconcentration of cobalt and nickel with 5,7-dichloroquinone-8-ol embedded styrene-ethylene glycol dimethacrylate polymer particles and determination by flame atomic absorption spectrometry (FAAS)

Praveen, R S; Sobhi Daniel; Prasada Rao, T (Elsevier Science, 2005)

This article explores the synthesis of styrene-divinyl benzene (DVB)/ethylene glycol dimethacrylate (EGDMA) polymers embedded with quinoline-8-ol (Q) or its dihalo derivatives by thermal means in the presence and absence ...
A convenient protocol for C-H oxidation mediated by an azido radical culminating in Ritter-type amidation

Vijay Nair, G; Suja, T D; Kishor Mohanan (Elsevier, 2005)

Cerium(IV) ammonium nitrate in combination with sodium azide reacts with Unactivated hydrocarbons in acetonitrile to furnish acetamides in one pot. The strategy can be used to introduce nitrogen functionality into a variety ...

Now showing items 21-40 of 107

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