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: Ag-NP-decorated BDP fibers (BDP@Ag composites) have been evolved as a sensitive materials for the detection of trace amounts of 4-mercaptobenzoic acid and rhodamine 6G as an analyte of surface-enhanced Raman scattering (SERS), and the detection limit is down to nanomolar concentrations with excellent recyclability.
Abstract: Facile synthesis of polyaniline@Ag composite has been successfully demonstrated by a simple solution-dipping method using high-aspect-ratio benzene tetracarboxylic acid-doped polyaniline (BDP) fiber as a nontoxic reducing agent as well as template cum stabilizer. In BDP@Ag composite, BDP fibers are decorated with spherical Ag nanoparticles (Ag NPs), and the population of Ag NPs on BDP fibers is controlled by changing the molar concentration of AgNO3. Importantly, Ag-NP-decorated BDP fibers (BDP@Ag composites) have been evolved as a sensitive materials for the detection of trace amounts of 4-mercaptobenzoic acid and rhodamine 6G as an analyte of surface-enhanced Raman scattering (SERS), and the detection limit is down to nanomolar concentrations with excellent recyclability. Furthermore, synthesized BDP@Ag composites are applied simultaneously as an active SERS substrate and a superior catalyst for reduction of 4-nitrothiophenol.
118 citations
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TL;DR: Post-synthesis modification of SBA-15 has been carried out to design highly ordered acid functionalized hybrid mesoporous organosilica, AFS-1, which has been used as an efficient heterogeneous organocatalyst for the syntheses of xanthenes under mild conditions in the absence of any other metal co-catalyst.
118 citations
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TL;DR: In this paper, the Flory-Weaver theory of coil-to-helix transition was applied to the 3-hexylthiophene (P3HT) gel.
Abstract: Regioregular poly(3-hexylthiophene) (P3HT) produces thermoreversible gel in xylene. The gel is brownish-red in color. SEM and TEM studies indicate the presence of fibrillar network. WAXS and electron diffraction pattern indicate the presence of P3HT crystallites in the gel. The gels exhibit a first-order phase transition when heated in DSC. A time-dependent UV−vis study indicates that gelation in this system is probably accompanied by two different processes, e.g., (1) coil-to-rod transformation and (2) aggregation of rods to form the crystallites producing the gel. The gelation rate (tgel-1) measured from the test tube tilting method is analyzed using the equation tgel-1 = f(C) f(T), where f(c) = φn, φ being the reduced overlapping concentration and n is an exponent. The average “n” value determined is 0.52, which indicates that three-dimensional percolation is a suitable model for this gelation. The gelation rate is analyzed according to the Flory−Weaver theory of coil-to-helix transition, and the free ...
117 citations
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TL;DR: The overall data show that there is a change in the secondary as well as the tertiary structure of Hb after conjugation with silver.
Abstract: In this article, we report the results of the extent of interaction as well as the formation of a bioconjugate of human hemoglobin (Hb) with silver (Ag). The complexation process and conformational changes are characterized using different spectroscopic and microscopic techniques. The UV−vis study demonstrates the perturbation of the soret/heme band and generates conformational heterogeneity within the heme group in the presence of silver. A fluorescence study suggests that the Tryptophan (Trp) residues of Hb are in a more polar environment after conjugation. Initial fluorescence enhancement with addition of silver is due to metal-enhanced fluorescence. Moreover, the fluorescence quenching after the formation of the Hb−Ag bioconjugate follows the modified Stern−Volmer (S−V) plot. The S−V plot along with the time-resolved fluorescence study indicates the presence of both static and dynamic types of quenching. In addition, the reduction potential values of the entities (Hb−heme, Ag+, and Trp) indicate the p...
117 citations
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TL;DR: A room temperature ionic liquid, 1-pentyl-3methylimidazolium bromide, [pmIm]Br efficiently catalyzes the addition of thiols and diethyl dithiophosphate to a variety of conjugated alkenes such as α, β-unsaturated carbonyl compounds, carboxylic esters, nitriles and chalcones.
116 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 |