A5039388563- Magnetism in coordination complexes
- Molecular Junctions and Nanostructures
- Porphyrin and Phthalocyanine Chemistry
- Electron Spin Resonance Studies
- Impact of Light on Environment and Health
- Electromagnetic Fields and Biological Effects
- Advanced Chemical Physics Studies
- Synthesis and Properties of Aromatic Compounds
- Photochemistry and Electron Transfer Studies
- Spectroscopy and Quantum Chemical Studies
University of Oxford
2019-2024
The photoexcited triplet states of porphyrin architectures are significant interest in a wide range fields including molecular wires, nonlinear optics, and spintronics. Electron paramagnetic resonance (EPR) is key spectroscopic tool the characterization these transient singularly well suited to quantify spin delocalization. Previous work proposed means extracting absolute signs zero-field splitting (ZFS) parameters, D E, sublevel populations by continuous wave, hyperfine measurements,...
The spin delocalization in the radical cations of a series ethyne-linked oligoporphyrins was investigated using EPR spectroscopy. room-temperature spectral envelope for these oligomers deviates significantly from benchmark N-0.5 trend line width expected completely delocalized density, contrast to butadiyne-linked analogues measured previously. Here, we show, DFT calculations and complementary low-temperature ENDOR measurements, that this deviation is primarily driven by more pronounced...
With a view towards the development of molecular spintronics, non-linear optics, and qubits, great amount research effort aims to establish factors which govern spin classification diradicals. Electron resonance (ESR) is an indispensable tool for such research. However, in some cases, mere presence ESR spectrum insufficient ascertain that presumed diradical indeed triplet state. In comparative case study Chichibabin monoradical analogue, we show how signals from different states present...
With a view towards the development of molecular spintronics, non-linear optics, and qubits, great amount research effort aims to establish factors which govern spin classification diradicals. Electron resonance (ESR) is an indispensable tool for such research. However, in some cases, mere presence ESR spectrum insufficient ascertain that presumed diradical indeed triplet state. In comparative case study Chichibabin monoradical analogue, we show how signals from different states present...
The photoexcited triplet states of porphyrins show great promise for applications in the fields opto-electronics, photonics, molecular wires, and spintronics. magnetic properties porphyrin are most conveniently studied by time-resolved continuous wave pulse electron spin resonance (ESR). This family techniques is singularly able to probe small yet essential details states: zero-field splittings, g-anisotropy, polarisation, hyperfine interactions. These characteristics linked spin-orbit...