Institution
Indian Association for the Cultivation of Science
Education•Kolkata, India•
About: Indian Association for the Cultivation of Science is a education organization based out in Kolkata, India. It is known for research contribution in the topics: Catalysis & Excited state. The organization has 3867 authors who have published 10457 publications receiving 220098 citations.
Topics: Catalysis, Excited state, Thin film, Ligand, Nanoparticle
Papers published on a yearly basis
Papers
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TL;DR: Using extensive state-of-the-art experiments over a wide range of synthesis parameters, qualitatively different growthKinetics for ZnO nanocrystals are established compared to all growth kinetics of semiconductor nanocry crystals, including Zn O, discussed so far in the literature.
Abstract: Using extensive state-of-the-art experiments over a wide range of synthesis parameters, such as the temperature and concentrations of different reactants, we establish qualitatively different growth kinetics for ZnO nanocrystals compared to all growth kinetics of semiconductor nanocrystals, including ZnO, discussed so far in the literature. The growth rate is shown to be strongly dependent on the concentration of (OH)- in an intriguing nonmonotonic manner as well as on temperature and is almost invariably much slower than well-known and generally accepted growth mechanisms based on a diffusion-controlled Ostwald ripening process or that expected in the surface reaction controlled regime. We show that these qualitatively different results arise from the unexpected role played by a part of the reactants by inhibiting rather than facilitating the reaction; we explain this extraordinary result in terms of an effective passivating layer around the growing nanocrystals formed by a virtual capping shell of Na+ ions.
164 citations
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TL;DR: In situ Ag nanoparticles are produced on reduction of Ag+ with N,N-dimethylformamide in the presence of poly(vinylidene fluoride) (PVF2).
Abstract: In situ Ag nanoparticles are produced on reduction of Ag+ with N,N-dimethylformamide in the presence of poly(vinylidene fluoride) (PVF2). The plasmon band transition is monitored with time in the reaction mixture for three sets of experiments by UV−vis spectroscopy. The plasmon band absorbance increases sigmoidally with log(time). Analysis of the data with the Avrami equation yields an exponent n value between 1.5 and 2.0, indicating two-dimensional nucleation with linear or diffusion controlled growth. The TEM study of the polymer nanocomposites (PNC) indicates both spherical and rodlike morphology for PNC0.5 and PNC2.5 samples, whereas the PNC11 sample has spherical and agglomerated structures (the numerical number associated with PNC indicates percentage (w/w) of Ag in the nanocomposite). The WAXS and FTIR studies indicate the formation of piezoelectric β-polymorphic PVF2 in the nanocomposites. The DSC study indicates some increase of the melting point and enthalpy of fusion of PVF2 in the nanocomposit...
164 citations
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TL;DR: In this paper, the authors proposed a condensation of aliphatic aldehyde with diethyl malonate, which is not very easy to achieve by conventional reagents, and was not addressed adequately in literature.
162 citations
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TL;DR: Water solubility enhancements of polycyclic aromatic hydrocarbons by micellar solutions at 25 degrees C using two series of surfactants, each involving two cationic and one nonionic surfactant in their single as well as equimolar binary and ternary mixed states, were measured and compared.
Abstract: Water solubility enhancements of polycyclic aromatic hydrocarbons (PAHs), viz., naphthalene, anthracene and pyrene, by micellar solutions at 25 °C using two series of surfactants, each involving two cationic and one nonionic surfactant in their single as well as equimolar binary and ternary mixed states, were measured and compared. The first series was composed of three surfactants, benzylhexadecyldimethylammonium chloride (C16BzCl), hexadecyltrimethylammonium bromide (C16Br), and polyoxyethylene(20)mono-n-hexadecyl ether (Brij-58) with a 16-carbon (C16) hydrophobic chain; the second series consisted of dodecyltrimethylammonium bromide (C12Br), dodecylethyldimethylammonium bromide (C12EBr), and polyoxyethylene(4)mono-n-dodecyl ether (Brij-30) with a 12-carbon (C12) chain. Solubilization capacity has been quantified in terms of the molar solubilization ratio, the micelle−water partition coefficient, the first stepwise association constant between solubilizate monomer and vacant micelle, and the average num...
162 citations
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TL;DR: In this paper, a highly regio-and stereoselective method for the synthesis of (Z)-3-aryl(alkyl)idene isoindolin-1-ones through palladium-copper catalysis is described.
161 citations
Authors
Showing all 3900 results
Name | H-index | Papers | Citations |
---|---|---|---|
Yves Pommier | 123 | 789 | 58898 |
Flemming Besenbacher | 114 | 728 | 51827 |
Katsuhiko Ariga | 112 | 864 | 45242 |
Shunichi Fukuzumi | 111 | 1256 | 52764 |
Rajdeep Mohan Chatterjee | 110 | 990 | 51407 |
Kwang S. Kim | 97 | 642 | 62053 |
Amar K. Mohanty | 81 | 538 | 31856 |
Nigel D. Browning | 81 | 646 | 23621 |
Andrea Caneschi | 80 | 435 | 25896 |
Rodolphe Clérac | 78 | 506 | 22604 |
Subrata Ghosh | 78 | 841 | 32147 |
Miaofang Chi | 77 | 304 | 22817 |
Yuan Ping Feng | 77 | 650 | 25846 |
D. D. Sarma | 70 | 521 | 18082 |
Asim Bhaumik | 69 | 466 | 16882 |