Highly efficient sulfimidation of 1,3-dithianes by Cu(I) complexes

A series of four Cu(I) complexes were tested for sulfimidation of 1,3-dithianes in the presence of [N-(p-tolysulfonyl)imino]phenyliodinane (PhI=NTs) as the nitrene-transfer agent. Cu(TMPhen)(PPh3)Br is an efficient catalyst with more than 90% yield of the corresponding product with less reaction time as compared to the literature copper(I) complexes

Synthesis and photo electrochemical characterization of an extended π-conjugated heteroleptic ruthenium (II) complex

A new extended π-conjugate heteroleptic ruthenium(II) complex (m-HRD-1) that contains a 4,4'-bis-2-(5(3,5-di-tert-butylphenyl)thiophene-2-yl)vinyl)2,2'-bipyridine as ancillary ligand, 4,4’-dicaboxy-2,2'-bipyridine as anchoring group, and two thiocyanate ligands in its molecular structure have been designed, synthesized and characterized by CHN, Mass, 1H-NMR, UV-Vis, and fluorescence spectroscopies as well as cyclic voltammetry. Electrochemical and theoretical studies showed that the LUMO of the sensitizer is above TiO2 conduction band and the HOMO is below the redox potential of the electrolyte. This new sensitizer was tested in dye-sensitized solar cells using liquid redox couple (I-/I3-) and its performance was compared to the standard sensitizer N719

Affordable dye sensitizer by waste

Abstract The development of dye sensitizer is growing in line with the increasing demand for renewable energy. A research to obtain a dye sensitizer that is economical, safe, and produces a great value of DSSC efficiency is a challenge unresolved. On the other hand, the efforts for waste reduction are also intensively conducted to create better environment. In this paper, the variation of synthetic dye wastes from batik industries have been successfully applied as dye sensitizer and fabricated on DSSC cells. Congo red (1.0133%) yielded higher efficiency than rhodamine B (0.0126%), methyl orange (0.7560%), and naphthol blue black (0.0083%). The divergence of the efficiency of DSSC is very dependent upon the chromophore group owned by dye. This study has proven that the more chromophore group possessed by dye, the higher the efficiency of DSSC generated. This research concludes that the dye wastes have a bright future to be implemented as dye sensitizer on solar cells

Benchmarking the Self-Assembly of Surfactin Biosurfactant at the Liquid–Air Interface to those of Synthetic Surfactants

The adsorption of surfactin, a lipopeptide biosurfactant, at the liquid–air interface has been investigated in this work. The maximum adsorption density and the nature and the extent of lateral interaction between the adsorbed surfactin molecules at the interface were estimated from surface tension data using the Frumkin model. The quantitative information obtained using the Frumkin model was also compared to those obtained using the Gibbs equation and the Langmuir–Szyszkowski model. Error analysis showed a better agreement between the experimental and the calculated values using the Frumkin model relative to the other two models. The adsorption of surfactin at the liquid–air interface was also compared to those of synthetic anionic, sodium dodecylbenzenesulphonate (SDBS), and nonionic, octaethylene glycol monotetradecyl ether (C14E8), surfactants. It has been estimated that the area occupied by a surfactin molecule at the interface is about 3- and 2.5-fold higher than those occupied by SDBS and C14E8 molecules, respectively. The interaction between the adsorbed molecules of the anionic biosurfactant (surfactin) was estimated to be attractive, unlike the mild repulsive interaction between the adsorbed SDBS molecules

Not Available

Not AvailablePlants parasitic nematodes are one of the limiting constraints of banana production in India as annual yield losses due to them are 12%(Rs.296 crores).(jain et al.2007). Yield losses due to root -lesion nematode (Pratylenchus coffeae) on banana is 44%(Sundararaju and Cannayane, 2003).Managing nematodes using resistant cultivars is a simple economic and environmentally safe method.Popular banana cultivars viz. nandra, poovan,Virupakshi etc.were susceptible to p.coffeae.(Sundararaju 2010).Available resistant sources from wild Musa germplasm cannot be used directly as they are poor yielders and not preferred byconsumers.Therefore,a pot screening experiment was conducted ton find out resistant sources NRCB selections viz. Bangrier(NRCB selection 7) Saba (NRCB selection 9)and Namwakhom (NRCB selection 10) and local cultivars viz .kothia and Monthan.All these cultivars contain ABB genoname and belong to Monthan group except Namwakhom which belong to 'Pisang Awak' group.ICA

Not Available

Not AvailablePlant parasitic nematodes are one of the important biotic constraints of oilseed production in India. Safflower (Carthamus tinctorius L.) is one among the least studied crops in nematological perspective. Root-knot (Meloidogyne spp.) and reniform (Rotylenchulus reniformis) nematodes are reported to be potential phyto-nematodes of economic importance on safflower. On the other hand, safflower is proved to contain nematode antagonistic " polyacetylene compounds. Research gaps include survey of safflower growing areas for nematode hotspots, pathogenicity of potential nematode pests and association of nematodes with safflower wilt disease. Use of safflower as intercrop and oil cake as organic amendment are some nematode management strategies using this crop.Not Availabl

Not Available

Not AvailableIn vitro and greenhouse experiments were conducted to evaluate the biocontrol potential of Fusarium wilt suppressive biocontrol agents viz., endophytic Trichoderma asperellum (Prr-2), endophytic Penicillium pinophilum (Bc-2), rhizospheric Trichoderma sp. (NRCB-3) and Bacillus flexus (Tvpr1) against root-lesion nematode, Pratylenchus coffeae and root-knot nematode, Meloidogyne incognita infecting banana (Musa sp.). Under in vitro conditions, highest mortality of both root-lesion and root-knot nematodes was recorded with cell free culture filtrates (CFCF) of B. flexus (Tvpr1) followed by T. asperellum (Prr-2) at 24 hours of exposure. More than 80% nematode mortality was achieved by CFCF of all the four isolates at 48hours of exposure and 100% nematode mortality was achieved by CFCF of all the four biocontrol isolates at 75% and 100% concentrations at 72hours of exposure. In pot experiment, all the four biocontrol isolates reduced root nematode population and improved plant growth significantly over control. Among the biocontrol isolates, B. flexus (Tvpr1) and endophytic Trichoderma asperellum (Prr-2) were found better in reducing population of rootlesion nematode (62 percent over control) and root-knot nematode (67 percent over control) respectively. The results were on par with control check (cartap hydrochloride). These biocontrol isolates may further evaluated under field conditions for the management of wilt-nematode complex in banana.Not Availabl

Not Available

Not AvailableNot AvailableICAR, ICAR-NRC