CSIR – National Institute for Interdisciplinary Science and Technology (NIIST)

Council of Scientific & Industrial Research (CSIR), Govt.Of India Thiruvananthapuram.

Research Highlights

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    Facile strategy for the development of polyglucopyranose–silver hydrogel/films for antimicrobial applications

    Reshma Lali Raveendran, Sudha J. Devaki* and K. Madhavan Nampoothiri
    In this paper, we report a facile strategy for the development of silver nanoparticle entrapped
    polyglucopyranose based green nanocomposite films/hydrogels through in situ polymerization and
    reduction and demonstrated its antimicrobial applications against Gram positive and Gram negative
    bacteria. The polyglucopyranose used for the preparation of the nanocomposite film was [...]

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    Catalyst controlled straightforward synthesis of highly substituted pyrroles/furans via propargylation/cycloisomerization of α-oxoketene-N,S-acetals

    DOI: 10.1021/acs.joc.6b02367
    Ganesh Chandra Nandi* and Soumini K.
    Abstract A facile and efficient InCl3 catalyzed one-pot synthesis of highly substituted pyrroles has been developed via a tandem propargylation/cycloisomerization reaction of α-oxoketene-N,S-acetals with propargyl alcohols. Notably, in the presence of Bronsted acid p-TSA.H2O, the reaction afforded the hydrolyzed product propargylated-1,3-dicarbonyl compounds, which upon treatment with Cs2CO3 underwent [...]

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    Licarin B from Myristica fragrance improves insulin sensitivity by activating PPARγ and subsequently up-regulating GLUT4 via PI3/AKT Signaling Pathway

    Peroxisome proliferator-activated receptors (PPARs) are ligand-dependent transcription factors regulating lipid and glucose metabolism. Ongoing drug discovery programs aim to develop partial PPARγ agonists devoid of the side effects of the marketed antidiabetic agents thiazolidinediones. Here, we evaluated the therapeutic potential of Licarin B (LB), a major bioactive constituent of Myristica fragrans in improving peroxisome proliferator-activated [...]

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    BF3•Et2O mediated one-step synthesis of N -substituted-1,2-dihydropyridines, indenopyridines and 5,6-dihydroisoquinolines

    C. T. Fathimath Salfeena, K. T. Ashithaa, and B. S. Sasidhar*
    A simple and efficient one-pot synthesis of N-substituted-1,2-dihydropyridines, indenopyridines and 5,6-dihydroisoquinolines by a BF3•Et2O mediated novel methodology, from easily available α,β-unsaturated ketones/arylidene ketones, phenyl acetylenes and substituted nitriles, has been described. This novel annulation provides quick access to complex polycyclic frameworks with an excellent substrate [...]

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    Graphene Oxide Sheathed ZIF 8 Microcrystals: Engineered Precursors of Nitrogen-doped Porous Carbon for Efficient Oxygen Reduction Reaction (ORR) Electrocatalysis

    Minju Thomas, Rajith Illathvalappil, Sreekumar Kurungot, Balagopal N. Nair,
    Abdul Azeez Peer Mohamed, Gopinathan M. Anilkumar*, Takeo Yamaguchi, and
    U. S. Hareesh*
    Nitrogen containing mesoporous carbon obtained by the pyrolysis of graphene oxide (GO) wrapped ZIF-8 (Zeolitic Imidazolate Frameworks-8) micro crystals is demonstrated to be an efficient catalyst for the oxygen reduction reaction (ORR). ZIF-8 synthesis in the [...]

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    Morphologically & compositionaly tuned lithium Silicate nanorods as high performance carbon dioxide sorbents

    P. V. Subha,Balagopal N. Nair*, A. Peer Mohamed, G. M. Anilkumar, K. G. K. Warrier, T. Yamaguchi and U. S. Hareesh*
    The effective capturing of carbon dioxide using regenarable high capacity sorbents is a prerequisite for industrial applications aiming CO2 capture and sequestration. The removal of CO2 directly from the chemical reaction environments at high temperature [...]

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    TEMPO Oxidized Nanocellulose Fiber Directed Stable Aqueous Suspension of Plasmonic Flowerlike Silver Nanoconstruct for UltraTrace Detection of Analytes

    Kallayi Nabeela, Reny Thankam Thomas, Jyothi B Nair, Kaustabh Kumar Maiti, Krishna Gopa Kumar Warrier, and Saju Pillai*

    ACS Appl. Mater. Interfaces,
    Just Accepted Manuscript • http://dx.doi.org/10.1021/acsami.6b07295 • Publication Date (Web): 06 Oct 2016
    Synthesis of shape-tuned silver (Ag) nanostructures with high plasmon characteristics has drawn significant importance in in-vitro diagnostic applications. Herein, we report a [...]

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    Formation of Coaxial Nanocables with Amplified Supramolecular Chirality through an Interaction between Carbon Nanotubes and a Chiral π-Gelator

    In an attempt to gather experimental evidence for the
    influence of carbon allotropes on supramolecular chirality, we
    found that carbon nanotubes (CNTs) facilitate amplification of
    the molecular chirality of a p-gelator (MC-OPV) to supramolecular
    helicity at a concentration much lower than that
    required for intermolecular interaction. For example, at
    a concentration 1.8×10¢4m, MC-OPV did not exhibit a CD
    signal; however, the addition [...]

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    A π-gel scaffold for assembling fullerene to photoconducting supramolecular rods

    Nonequilibrium self-assembly of molecules holds a huge prospect as a tool for obtaining new-generation materials for future applications. Crystallization of neutral molecules within a supramolecular gel matrix is one example in which two nonequilibrium processes occur orthogonal to each other. On the other hand, electronically interacting donor-acceptor two-component systems are expected to form phase-miscible hybrid [...]

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    Tweaking the Organization of Liquid Crystallinity and Molecular Gelation in Cholesterol Tagged Cardanol by Self-Assembly

    Neethu K. Sadanandhan, Sarojam Sivakala, and Sudha J. Devaki*
    This paper describes the effect of unsaturation, solvent, concentration
    and temperature on the specific modes of packing
    and the formation of supramolecular architectures in cholesterol
    tagged cardanol, 3-pentadecyl phenol. Influences were investigated
    using various microscopic techniques, UV-Vis spectroscopy,
    emission spectroscopy, Circular Dichroism (CD)
    spectroscopy, X-Ray Diffraction (XRD) and rheometry. Results
    revealed that the driving [...]

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