The colours of life: an introduction to the chemistry of porphyrins and related compounds
Why are leaves green and blood red? The answer lies with one family of pigments, the porphyrins and their relatives. These pigments are also responsible for the fundamental energetic processes that make life as we know it possible. The properties of these colorful molecules are now being investigated for use in a wide range of applications, from cancer therapy to microelectronics. The Colours of Life is intended to be an introduction to the porphyrins and their role in life.
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What porphyrins are and what they do
Where porphyrins come from
How do they do it?Making oxygen
5 other sections not shown
absorption acceptor acid residue amino acid antibonding aromatic axial benzene bile pigments bilirubin biliverdin binding biosynthesis blood called carbon atoms catalysed cation cells Chem chemical chemistry chemists chlorin chlorophyll complex compounds conductivity cytochrome delocalised deoxyhemoglobin double bonds electron transfer electron-transporting energy enzyme example excited electron Fe(II Figure four give globin groups heme oxygenase hemoglobin hemoproteins histidine hydrogen bonding inorganic interaction ir-electrons ir-system iron isomers ligands light lignin macrocycle membrane meso-carbons meso-positions metabolism metal metalloporphyrin methyl molecular orbitals molecules myoglobin NADPH nitrogen occurs open-chain tetrapyrroles organic oxidation oxidised pathway peroxide photosensitiser photosynthesis phthalocyanines phyrins plants polymers porphyrin porphyrin macrocycle position prebiotic produced protein protons protoporphyrin purple pyrrole Q bands radical reaction reactive redox reduced ring sensitiser side chain singlet oxygen spectra spectrum structure substitution synthesis synthetic tetrapyrrole tion transition triplet uro'gen uroporphyrin UV-visible vitamin B12