Seminars

  • Unique Photoluminescence Behavior of Phosphorescent Organoplatinum(II) Complexes

    Prof. Shigeyuki Yagi,   Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, Japan

    Phosphorescent organoplatinum(II) complexes adopt four-coordinated square planar geometry and sometimes show unique luminescence behavior based on the excimer or aggregate formation through intermolecular Pt-Pt interaction. In the present talk, two topics will be provided on phosphorescence properties of our organoplatinum(II) complexes : one is the substituent effect on the excimer emission of (ppy)Pt(acac)-type complexes (ppy and acac; 2-phenylpyridinate and acetylacetonate, respectively), and the other is the luminescent mechano- and vapochromic behavior of solid-state (C^N^C)PtX-type complexes (C^N^C and X; 2,6-duphenylpiridine tridentate ligand and neutral monodentate ligand, respectively).


    CSIR-NIIST Seminar Hall
    On 5th December 2019 at 11:00 am
  • Polymer-Based Nanomaterials : Structural Diversity and Applications

    Prof. Tushar Jana,   Professor, School Of Chemistry, University of Hyderabad, Hyderabad


    Seminar Hall, CSIR-NIIST
    On 3rd December 2019 at 9:30 am
  • Magneto-optical Kerr effect (MOKE) microscopy – Technique to study magnetism of thin films

    Dr. V. Raghavenra Reddy,   Scientist G, UGC-DAE Consortium for Scientific Research, Khandwa Road, University Campus, Indore

    Kerr microscopy which works on the principle of magneto-optical Kerr effect (MOKE) is a non-destructive and a powerful method to study magnetic nano & micro structures.  Kerr microscopy is one of the few techniques which can give both magnetization and magnetic microstructure in a single measurement and therefore is being used extensively in recent times [1].  In the present talk, I will present our recent Kerr microscopy results of magnetic thin films exhibiting exchange bias, exchange spring etc., phenomena [2-6].

    References

    1. Hubert and R. Schafer. Magnetic Domains: The Analysis of Magnetic Microstructures. Springer, Berlin, 1998.
    2. Z. Hussain, V. R. Reddy et al. J. Phys. D: Appl. Phys.50 (2017) 425001
    3. Z. Hussain, D. Kumar and V. R. Reddy., J. Magn. Magn.  Mater.  477 (2019) 408–414
    4. Z. Hussain and V. R. Reddy.,  J. Appl. Phys., 122 (2017) 103903
    5. Z. Hussain et al. J. Magn. Magn.  Mater., 430 (2017) 78-84
    6. Z. Hussain, V. R. Reddy et al., Journal of Applied Physics 126 (2019) 043905


    CSIR-NIIST Seminar Hall
    On 2nd December 2019 at 2:00 pm
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