Asha S.K.

Asha S.K.

Polymer Science and Engineering Division

About Me

Our group research activities are focused on synthesis and self assembly whereby we strive to make use of molecular self-organization to build higher ordered polymer architectures which can find potential applications in the opto-electronic devices. We design the monomers and polymers with self assembling tools like hydrogen bonding interactions, pi stacking interaction or alkyl chain interdigitation and study their structure-property relationship using various experimental techniques like absoption and emisssion, wide angle X ray diffraction (WXRD), Polarized Light Microscopy (PLM), etc. The areas of research expertise in the group include monomer and polymer design and synthesis, supramolecular chemistry, photophysical characterization of fluorescent polymers, thermal and optical characterization of Liquid crystalline polymers etc.

Professional Experience

  • 2007- Current- Scientist, National Chemical Laboratory, Pune, India
  • 2003-2007 Scientist National Institute for Interdisciplinary Science and Technology (NIIST, CSIR) � Thiruvananthapuram, India
  • 2002-2003 Polymer Scientist, GE Plastics, John F. Welch Tech.Centre, GE India Private Ltd., Bangalore, India

Selected Publications

  • N. B. Kolhe, A. Z. Azhar And K. S. Narayan* and S. K. Asha*, Naphthalene Diimide Copolymers with Oligo(p-phenylenevinylene) and Benzobisoxazole for Balanced Ambipolar Charge Transport, Macromolecules., 47, 2296 - 2305 (2014), DOI:org/10.1021/ma5001145.
  • Chinmay G. Nardele And S. K. Asha* , Photoresponsive Smectic Liquid Crystalline Multipods and Hyperbranched Azo Polymers, J. Phys. Chem,. B., 118, 1670 - 1684 (2014), DOI:org/10.1021/jp410589h.
  • S. Kumari Nisha And and S. K. Asha*, Chiral Poly(?-lactic acid) Driven Helical Self-Assembly of Oligo(p-phenylenevinylene), J. Mater. Chem C., 2, 2051 - 2060 (2014), DOI:10.1039/C3TC32241F.
  • K. Kaushlendra And S. K. Asha*, H-Bonding vs Non-H Bonding in 100% Pyrene Methacrylate Comb Polymers:Self Assembly Probed by TRES and Temperature Dependent Fluorescence, J. Phys. Chem. B., 118, 4951 - 4962 (2014), DOI:10.1021/jp501346b.
  • Swapnil L. Sonawane and S. K. Asha*, Blue, Green, and Orange-Red Emission from Polystyrene Microbeads for Solid-State White-Light and Multicolor Emission, J. Phys. Chem. B., 118, 9467 - 9475 (2014), DOI:10.1021/jp504718m.
  • Rekha Narayan, Prashant Kumar, K. S. Narayan And S. K. Asha*, Nanostructured Crystalline Comb Polymer of Perylenebisimide by Directed Self-Assembly: Poly(4-vinylpyridine)-pentadecylphenol Perylenebisimide, Adv. Funct. Mater., 23, 2033 - 2043 (2013).
  • T. SenthilKumar And S. K. Asha, Self-Assembly in Tailor-Made Polyfluorenes: Synergistic Effect of Porous Spherical Morphology and FRET for Visual Sensing of Bilirubin, Macromolecules., 46, 2159 - 2171 (2013).
  • Rekha Narayan And S. K. Asha, Solvent-induced self-assembly of hydrogen bonded P4VP-perylenebisimide comb polymer, J. Mater. Chem C., 1, 5925 - 5934 (2013).
  • K. Kaushlendra And S. K. Asha, Variable Temperature Time-Resolved Emission Spectra (TRES) Studies of Random Pyrene Urethane Methacrylate Copolymers with High Pyrene Incorporation, J. Phys. Chem,. B., 117, 11863 - 11876 (2013).
  • S. Kumari Nisha And S. K. Asha, Donor-Acceptor Random Copolyesters containing Perylenebisimide (PBI) and Oligo(p-phenylene vinylene) (OPV) by Melt Condensation Polymerization: Energy Transfer Studies, J. Phys. Chem,. B., 117 (43), 13710 - 13722 (2013), DOI:10.1021/jp408355j.
  • Sonawane Swapnil And S. K. Asha, Fluorescent Crosslinked Polystyrene Perylene bisimide/Oligo(p-Phenylenevinylene) Microbeads with controlled particle size, tunable Colors and High Solid State emission, ACS Applied Materials & Interfaces., 5 (22), 12205 - 12214 (2013).
  • K. Kaushlendra And S. K. Asha, Microstructural Reorganization and Cargo Release in Pyrene Urethane Methacrylate Random Copolymer Hollow Capsules, Langmuir., 28, 12731 (2012).
  • N. B. Kolhe, R. N. Devi, S. P. Senanayak, B. Jancy, K. S. Narayan And S. K. Asha, Structure engineering of naphthalene diimides for improved charge carrier mobility: self-assembly by hydrogen bonding, good or bad?, J. Mater.?Chem., 22, 15235 (2012).
  • C. G. Nardele And S. K. Asha, Twin liquid crystals and segmented thermotropic polyesters containing azobenzene?effect of spacer length on LC properties, J. Polym. Sci. Part A: Poly.Chem., 50, 2770 (2012).
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Research Interest

  • Polymer Chemistry

Contact Details

Dr. Asha S.K.


Scientist
Office: D-101, Polymer and Advanced Materials Laboratory
National Chemical Laboratory
Dr. Homi Bhabha Road
Pune 411008, India
Phone +91 20 2590 2062
E-mail sk.asha@ncl.res.in