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).
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 . 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].
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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
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6. Z. Hussain, V. R. Reddy et al., Journal of Applied Physics 126 (2019) 043905