Probing surface-porphyrazine reduction potential by molecular design

Article Abstract:

A study reports electrochemical and angle-resolved X-ray photoelectron spectroscopy measurements of surface-bound porphyrazine monolayers in which the molecule-surface distance and molecular orientation of the porphyrazine are controlled through the design of the adsorbates. Results indicate that the shift in reduction potential upon surface binding is not a discontinuous function of the molecule-surface distance, but rather varies smoothly.

Observations, Oxidation-reduction reaction, Oxidation-reduction reactions, X-ray spectroscopy, Atomic force microscopy

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Interaction of metal porphyrins with fullerene [C.sub.60]: A new insight

Article Abstract:

Density functional theory (DFT) methods are used to re-examine the electronic structure and bonding in the noncovalent, supramolecular complexes of fullerene [C.sub.60] with a series of first-row transition metal porphines MP (M=Fe, Co, Ni, Cu, Zn). The evaluated MP-[C.sub.60] binding energies are found to be reliable and accurate based on the dispersion-corrected DFT calculations, which has also included the counterpoise (CP) correction.

Density functionals, Density functional theory, Mechanical properties, Fullerenes, X-ray analysis

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Study on nonlinear spectroscopy of tetraphenylporphyrin and dithiaporphyrin diacids

Article Abstract:

A detailed study of nonlinear absorption parameters of two porphyrin, tetraphenylporphyrin and dithiaporphyrin diacids as well as their neutral parent complexes is demonstrated. The two diacids exhibit perturbed static and dynamic characteristics and enhanced nonlinear absorption properties which could be applied to optical limiting.

Spectra, Ultraviolet spectroscopy, Wavelength

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