Browsing 2014 by Title

Now showing items 148-167 of 236

Offsetting the problem of charge trapping in white polymer light-emitting diodes using a fluorenone-based luminogen

Ananthakrishnan, S J; Varathan, E; Somanathan, N; Subramaniyan, V; Mandal, A B; Sudha, J D; Ramakrishnan, R (Royal Society of Chemistry, 2014-09)

In this study, we propose a strategy to offset charge trapping and to enhance the confinement of excitons in the emissive layer of white electroluminescent copolymer using a luminogen with aggregation-induced emission ...
Oligo(phenylenevinylene) hybrids and self-assemblies: Versatile materials for excitation energy transfer

Praveen, V K; Ranjith, C; Bandini, E; Ajayaghosh, A; Armaroli, N (Royal Society of Chemistry, 2014)

Oligo(phenylenevinylene)s (OPVs) are extensively investigated p-conjugated molecules that exhibit absorption and fluorescence in the UV-Vis spectral region, which can be widely tuned by chemical functionalisation and ...
Open access and impact factors revisited

Gangan Prathap (Indian Academy of Sciences, 2014-09-10)
Organic nanoparticles composed of Frechet-type dendrons: Synthesis, characterization, self-assembly and reversible guest encapsulation

Sreedevi, K; Gopidas, K R (Royal Society of Chemistry, 2014)

Novel organic nanoparticles composed of Frechet-type dendrons have been synthesized by a simple one-pot reaction, which involved etching off the gold core in a first generation gold nanoparticle-cored dendrimer (AuG(1)). ...
Palladium-catalyzed interceptive decarboxylative addition of allyl carbonates with carbonyl group

Baiju, T V; Nayana Joseph; Jainu Ajit; Praveen, P; Radhakrishnan, K V; Sunil Varughese; Yamamoto, Y (Georg Thieme Verlag, 2014)

The first palladium-catalyzed interceptive decarboxylative 1,4-addition of allyl carbonates with squarates is reported. Interestingly, the C-3 carbonyl group of N-substituted isatins undergoes smooth decarboxylative ...
Palladium-nanoparticle-linked organic frameworks: Heterogeneous recyclable catalysts in aqueous medium

Prakash, S P; Gopidas, K R (Wiley, 2014)

4,4'-Biphenylene-bisdiazonium tetrafluoroborate and a palladium salt were reduced simultaneously to result in the formation of palladium atoms and 4,4'-biphenylene biradicals. The palladium atoms underwent clustering forming ...
Parmotrema tinctorum exhibits antioxidant, antiglycation and inhibitory activities against aldose reductase and carbohydrate digestive enzymes: An in vitro study

Salin Raj, P; Prathapan, A; Jomon, S; Antu, K A; Riya, M P; Preetha Rani, M R; Biju, H; Priya, S; Raghu, K G (Taylor & Francis, 2014)

This study evaluated the inhibitory potential of ethyl acetate extract of Parmotrema tinctorum (PTEE), an edible lichen, against aldose reductase (AR) and carbohydrate digestive enzymes such as alpha-glucosidase and ...
Pathways of cylindrical orientations in PS-b-P4VP diblock copolymer thin films upon solvent vapor annealing

Bhoje Gowd, E; Koga, T; Endoh, M K; Kumar, K; Stamm, M (Royal Society of Chemistry, 2014)

The orientation changes of perpendicular cylindrical microdomains in polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) thin films upon annealing in different solvent vapors were investigated by in situ grazing incidence ...
Percolated conductive polyaniline-clay nanocomposite in polyvinyl chloride through the combined approach porous template and self-assembly

Sudha, J D; Sivakala, S; Chandrakanth, C K; Neethu, K S; Rohini, K N; Ramakrishnan, R (Budapest University of Technology and Economics, 2014)

In this paper, we are reporting a novel strategy for the preparation of conductive polyaniline-clay nanocomposite in Polyvinylchloride (PVC) matrix by admicellar emulsion polymerization using a low cost renewable resource ...
The performance of research-intensive higher educational institutions in India

Gangan Prathap (Indian Academy of Sciences, 2014)

The institutions belonging to the higher education sector taken together are the biggest contributor to India's academic research output. In this article we use the datasets from the 2013 release of SCImago Institutions ...
A phosphine-mediated reaction of cyclic 1,2-diones and 3-alkyl allenoates: an efficient protocol for benzannulation applicable to the synthesis of polycyclic aromatic hydrocarbons

Anu Jose; Jayakrishnan, A J; Vedhanarayanan, B; Rajeev S Menon; Sunil Varughese; Suresh, E; Vijay Nair, G (Royal Society of Chemistry, 2014)

A facile one-pot benzannulation strategy involving phosphine-3-alkyl allenoate zwitterions and cyclic 1,2-diones is described. The strategy is effectively utilized in the synthesis of fluoranthenes and benzo[a]aceanthrylenes ...
Photoenolization via excited state double proton transfer induces ‘‘turn on’’ fluorescence in diformyl diaryl dipyrromethane

Sreedevi, K C G; Ajesh P Thomas; Aparna, K H; Renuka, P; Reddy, M L P; Lourderaj, U; Srinivasan, A (Royal Society of Chemistry, 2014)

A light triggered enolization in diformyl diaryl dipyrromethane by excited state dual proton transfer (ESDPT) induces ‘‘turn on’’ fluorescence. The role of diaryl and diformyl groups in the enolization process was confirmed ...
Photoluminescent, self-cleaning titanium oxide nanocomposites with multifunctional properties

Smitha, V S; Saju Pillai; Hareesh, U N S; Nair, B N; Warrier, K P (RSC Advances, 2014-11-10)

Photoluminescent and self-cleaning properties of an Eu 3+ doped titania–silica–lanthanum phosphate nanocomposite (Eu-TSL) prepared by an aqueous sol–gel process and films fabricated on glass substrates by dip coating ...
Photoresponsive glycopolymer aggregates as controlled release systems

Sajith Menon; Rahul, M O; Suresh Das (Wiley, 2014-12)

The use of a new block copolymer made up of poly(azobenzene methacrylate) (PMAzo) and poly(3-O-4-vinylbenzoyl- D -glucopyranose) (PBG) is described for the solubilization of waterinsoluble dyes such as Nile Red in aqueous ...
Photoresponsive metal-organic materials: Exploiting the Azobenzene switch

Mukhopadhyay, R D; Praveen, V K; AjayaGhosh, A (Royal Society of Chemistry, 2014-07-11)

Photoinduced cis–trans isomerisation of azobenzene has been an inspiration to chemists to design smart materials that respond to light. Lately, this chemistry has also made a mark in the emerging area of metal– organic ...
Physical, mechanical, and tribological attributes of stir-cast AZ91/SiCp composite

Ajith Kumar, K K; Abhilash, V; Rajan, T P D; Pillai, U T S; Pai, B C (Springer, 2014-04-16)

In the present investigation, composites with silicon carbide particle (SiCp) as reinforcement and AZ91 magnesium alloy as matrix have been synthesized using liquid metal stir-casting technique with optimized processing ...
Physicochemical characterization of alkali pretreated sugarcane tops and optimization of enzymatic saccharification using response surface methodology

Sindhu, R; Kuttiraja, M; Binod, P; Rajeev K Sukumaran; Pandey, A (Elsevier, 2014)

Alkali pretreatment of sugarcane tops was carried out with 3% NaOH for 60 min at 121 degrees C in a laboratory autoclave. The effect of solid loading, enzyme loading, incubation time and surfactant concentration on enzymatic ...
Plant growth-promoting rhizobacterial strain-mediated induced systemic resistance in Tea (Camellia sinensis (L.) O. Kuntze) through defense-related enzymes against brown root rot and charcoal stump rot

Mishra, A K; Morang, P; Deka, M; Nishanth Kumar, S; Dileep Kumar, B S (Humana Press Inc., 2014)

Induction of systemic resistance in host plants through microbes and their bioactive metabolites are attaining popularity in modern agricultural practices. In this regard, individual application of two strains of Pseudomonas, ...
Poly(vinylidene fluoride)–La0.5Sr0.5CoO3-delta composites: the influence of LSCO particle size on the structure and dielectric properties

Deepa, K S; Shaiju, P; Sebastian, M T; Bhoje Gowd, E; Jose James (Royal Society of Chemistry, 2014)

Dielectric composites composed of poly(vinylidene fluoride) (PVDF) and La0.5Sr0.5CoO3-delta (LSCO) with high permittivity, low loss and high breakdown strength have been developed. The effects of particle size of LSCO (fine ...
Polyaryletherketone polymer nanocomposite engineered with nanolaminated Ti3SiC2 ceramic fillers

Mahesh, K V; Balanand, S; Raimond, R; Peep Mohamed, A; Ananthakumar, S (Elsevier, 2014-11)

Thermal, mechanical and tribological properties of a new ceramic–polymer nanocomposite in which polyaryletherketone (PAEK) polymer was reinforced with titanium silicon carbide (Ti3SiC2), a ceramic nanolaminate belonging ...

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