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Start Over Author "Adeyemo, Adegboye O." Topic metal ions
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1. STRUCTURE OF PORPHYRIN TPPS4 AND ITS INTERACTION WITH METAL IONS AS ELUCIDATED BY 1H NMR AND UV-VISIBLE SPECTRA.

Author

Zhiyan Song, Adeyemo, Adegboye O., Baker, Jannie, Traylor, Shakeya M., and Liqhtfoot, Marcia L.

Subjects
*PORPHYRINS, *METAL ions, *TETRAPYRROLES, *SPECTRAL analysis (Phonetics), *SALTWATER solutions, *ALKALI metals, *MAGNETIC resonance imaging
Abstract

Porphyrins are a group of tetrapyrrole pigments. Physical and chemical properties of porphyrins are often related to their compositions and structures. We conducted solution NMR and UV-visible spectral analysis to characterize the structural feature of a water-soluble, synthetic porphyrin i.e. tetrakis (p-sulfonatophenyl) porphyrin, TPPS4, and its interaction with different metal ions in aqueous solutions. The results indicate that tetrapyrrole and tetraphenyl rings in TPPS4 molecule form a co-planar electron conjugation system; transition-metal ions show stronger binding capacity than alkali and alkali-earth metal ions; the relative stabilities of TPPS4-metal ion complexes can be well assessed by NMR and UV-visible spectral data. [ABSTRACT FROM AUTHOR]

Published
2011

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