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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    Processing of thermally stable 3D hierarchical…

    Minju Thomas, Balagopal N. Nair, G. M. Anilkumarc, A. Peer Mohamed, K.G.K. Warrier and U.S. Hareesh*

    Processing of thermally stable 3D hierarchical ZIF-8@ZnO structures and their CO2 adsorption studies
    Core-shell hybrid structures of ZnO-Zeolitic Imidazolate Framework-8 (ZIF@ZnO) were obtained by the solvothermal treatment of ZnO hierarchical structures having an average cluster size of ~3 μm and surface [...]

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    Hydrophobic and Metallophobic Surfaces: Highly Stable…

    Sasidharan Sankar, Balagopal N. Nair, Takehiro Suzuki, Gopinathan M. Anilkumar,Moothetty Padmanabhan, Unnikrishnan Nair S. Hareesh* & Krishna G. Warrier*

    Hydrophobic and Metallophobic Surfaces: Highly Stable Non-wetting Inorganic Surfaces Based on Lanthanum Phosphate Nanorods
    Metal oxides, in general, are known to exhibit significant wettability towards water molecules because of the high feasibility of synergetic hydrogen-bonding interactions possible at [...]

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    Nanostructured Semiconducting PEDOT−TiO2/ZnO…

    Rajaraman Ramakrishnan,Sudha J. Devaki*,A. Aashish, Senoy Thomas, Manoj Raama Varma, Najiya KPP

    Nanostructured Semiconducting PEDOT−TiO2/ZnO Hybrid Composites for Nanodevice Applications
    In this paper, we have developed a simple strategy for the preparation of hybrid nanocomposites of poly(3,4-ethylenedioxythiophene)–TiO2/ZnO (PZT) and demonstrated its application in a thermoelectric device. Hierarchical hetero-nanostructured TiO2/ZnO (ZTO) was prepared by a facile sol–gel process [...]

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    Color-Tunable Cyano-Substituted Divinylene Arene…

    F. Aparicio, S. Cherumukkil, A. Ajayaghosh* and L. Sánchez*
    Color-Tunable Cyano-Substituted Divinylene Arene Luminogens as Fluorescent pi-Gelators
    The synthesis of three cyano-substituted divinylene pi-gelators is reported. The modulation of the color is achieved by placing the cyano groups in appropriate position of the conjugated backbone, thus modulating the donor−acceptor interaction. Variable-temperature UV/Vis data have been utilized to [...]

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    Molecular,Crystalline,and Lamellar Length-Scale…

    P.Shaiju, N. Sanjeeva Murthy and E. Bhoje Gowd*
    Molecular, Crystalline, and Lamellar Length-Scale Changes in the Poly(l-lactide) (PLLA) during Cyclopentanone (CPO) Desorption in PLLA/CPO Cocrystals
    Polymer−solvent complexes, poly(L-lactide) (PLLA) with cyclopentanone (CPO), were studied at multiple length scales using differential scanning calorimetry, small-angle neutron scattering, Fourier transform infrared spectroscopy, and temperature-dependent wide- and small-angle X-ray scattering. PLLA [...]

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    Cross-Linkable Fluorene-Diphenylamine Derivatives For

    Silja Abraham, Gayathri Prabhu T. Ganesh, Sunil Varughese, Biswapriya Deb, and Joshy Joseph*
    Cross-Linkable Fluorene-Diphenylamine Derivatives for Electrochromic Applications
    Multicolor electrochromic systems based on heat cross-linkable arylamine-substituted fluorene derivatives, FD and FDOMe, are reported. These derivatives with pendant vinyl groups have been synthesized by the Buchwald–Hartwig amination reaction and were well-characterized using various analytical and spectroscopic techniques [...]

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    Heteroatom induced contrasting effects on the stimuli responsive properties of anthracene based donor-pi-acceptor fluorophores

    Karattu Chali Naeem, Akhila Subhakumari, Sunil Varughese and Vijayakumar C. Nair*
    Two donor--acceptor type fluorophores consisting of anthracene as the donor and benzoxazole (ABO) or benzothiazole (ABT) as the acceptors are designed and synthesised. Both fluorophores exhibit excellent solid state luminescence, and respond to external stimuli such as mechanical force (mechanochromism) and protons (acidochromism). Though the [...]

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    Shape controlled synthesis of multi-branched gold nanocrystals through a facile one-pot bifunctional biomolecular approach

    M. Sajitha, A. Vindhyasarumi, A. Gopi, and K. Yoosaf *
    Anisotropic nanocrsytals of gold and silver are promising candidates for sensing and therapeutic applications because of their high extinction coefficient, increased NIR response and localization of hot spots at their tips. Herein, we report a viable room temperature synthetic strategy to prepare multi-branched gold nanocrystals of [...]

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    Light Driven Mesoscale Assembly of a Coordination Polymeric Gelator into Flowers and Stars with Distinct Properties

    R. D. Mukhopadhyay, V. K. Praveen, A. Hazra, T. K. Maji and A. Ajayaghosh*
    Control over the self-assembly process of porous organic–inorganic hybrids often leads to unprecedented polymorphism and properties. Herein we demonstrate how light can be a powerful tool to intervene in the kinetically controlled mesoscale self-assembly of a coordination polymeric gelator. Ultraviolet light induced [...]

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    Pyridyl-Amides as a Multimode Self-assembly Driver for the Design of a Stimuli Responsive π-Gelator

    K. K. Kartha, V. K. Praveen, S. S. Babu, S. Cherumukkil and A. Ajayaghosh*
    An oligo(p-phenylenevinylene) (OPV) derivative connected to pyridyl end groups through an amide linkage (OPV-Py) resulted in a multistimuli-responsive pi-gelator. When compared to the corresponding OPV -gelator terminated by a phenyl-amide (OPV-Ph), the aggregation properties of OPV-Py were found to be significantly different, [...]

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