Identification of metalloporphyrins by third-derivative UV/VIS diode array spectroscopy
| Autor: | C. J. Boreham, D. H. Freeman, D. Castres Saint Martin |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
chemistry.chemical_classification
medicine.diagnostic_test General Chemical Engineering Analytical chemistry Energy Engineering and Power Technology Chromophore Porphyrin chemistry.chemical_compound Wavelength Fuel Technology Ultraviolet visible spectroscopy chemistry Spectrophotometry Functional group medicine Spectroscopy Alkyl |
| Zdroj: | Energy & Fuels. 7:194-199 |
| ISSN: | 1520-5029 0887-0624 |
| DOI: | 10.1021/ef00038a006 |
| Popis: | Qualitative analysis of organic compounds is expedited by third-derivative processing of diode array UV/vis spectra which can locate λ max with ±0.02 nm precision, or 1/100 of the present diode interval. The technique was applied to over 50 metalloporphyrins, primarily geological residues of ancient chlorophyll, and the result suggest broader applicability. Among metalloporphyrins, the Soret band wavelength, λ(Soret), varies with the type of functional group structure on the periphery of the 20-carbon porphyrin chromophore. Distinctive λ(Soret) ranges are defined by exocyclic structure (butano, propano, ethano), or lack thereof (etio). Among etioporphyrins λ(Soret) varies with the number of alkyl substituents |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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