Zhiyan Song, Adegboye O Adeyemo, Jannie Baker, Shakeya M Traylor, Marcia L Lightfoot
{"title":"STRUCTURE OF PORPHYRIN TPPS<sub>4</sub> AND ITS INTERACTION WITH METAL IONS AS ELUCIDATED BY <sup>1</sup>H NMR AND UV-VISIBLE SPECTRA.","authors":"Zhiyan Song, Adegboye O Adeyemo, Jannie Baker, Shakeya M Traylor, Marcia L Lightfoot","doi":"","DOIUrl":null,"url":null,"abstract":"<p><p>Porphyrins are a group of tetrapyrrole pigments. Physical and chemical properties of porphyrins are often related to their compositions and structures. We conducted <sup>1</sup>H solution NMR and UV-visible spectral analysis to characterize the structural feature of a water-soluble, synthetic porphyrin i.e. tetrakis (p-sulfonatophenyl) porphyrin, TPPS<sub>4</sub>, and its interaction with different metal ions in aqueous solutions. The results indicate that tetrapyrrole and tetraphenyl rings in TPPS<sub>4</sub> 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 TPPS<sub>4</sub>-metal ion complexes can be well assessed by NMR and UV-visible spectral data.</p>","PeriodicalId":81322,"journal":{"name":"Georgia journal of science : official publication of the Georgia Academy of Science","volume":"69 2-3","pages":"89-101"},"PeriodicalIF":0.0000,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3615901/pdf/nihms337646.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Georgia journal of science : official publication of the Georgia Academy of Science","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Porphyrins are a group of tetrapyrrole pigments. Physical and chemical properties of porphyrins are often related to their compositions and structures. We conducted 1H 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.
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