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12 March 2024 Porphyrins for magneto-optical materials
Jeffrey Rack
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Proceedings Volume PC12883, Organic Photonic Materials and Devices XXVI; PC1288304 (2024) https://doi.org/10.1117/12.3001115
Event: SPIE OPTO, 2024, San Francisco, California, United States
Abstract
We have prepared a series of four-coordinate metalloporphyrins (M(TPP), TPP is tetraphenylporphyrin and M(TPFPP), TPFPP is tetrapentafluorophenylpor-phyrin; M is Zn2+, Ni2+, Pt2+, or Pd2+) with distinct meso-substituents and their Magne-to-Optical Activity (MOA) was characterized by magnetic circular dichroism (MCD) and Magneto-Optical Rotary Dispersion spectroscopy (MORD; also known as Faraday Rotation spectroscopy). MORD spectra were calculated from the Kramers-Kronig relationship between MCD and MORD with the Hilbert transformation. The data show that the presence of the pentafluorophenyl group results in a significant increase in MOA in comparison to the phenyl group. The Gouterman four-orbital model is used to explain the MOA of these compounds.
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Jeffrey Rack "Porphyrins for magneto-optical materials", Proc. SPIE PC12883, Organic Photonic Materials and Devices XXVI, PC1288304 (12 March 2024); https://doi.org/10.1117/12.3001115
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KEYWORDS
Magneto-optics
Circular dichroism spectroscopy
Spectroscopy
Magnetism
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