Properties of chlorophyll derivatives bonded to polymers
Two types of water-soluble complexes of chlorophyll a with organic polymers have been investigated: chlorophyll a coordinately bonded to poly 4-vinylpyridine and a chlorophyll derivative, Mg-chlorin e_6 phytyl methyl ester, covalently bonded to GANTREZ AN (poly (methyl vinyl ether/maleic anhydride)...
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| Format: | Others |
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BYU ScholarsArchive
1965
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| Online Access: | https://scholarsarchive.byu.edu/etd/8244 https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=9244&context=etd |
| Summary: | Two types of water-soluble complexes of chlorophyll a with organic polymers have been investigated: chlorophyll a coordinately bonded to poly 4-vinylpyridine and a chlorophyll derivative, Mg-chlorin e_6 phytyl methyl ester, covalently bonded to GANTREZ AN (poly (methyl vinyl ether/maleic anhydride) ). The first complex was observed upon dissolving chlorophyll a and poly 4-vinylpyridine in aqueous ethanol solutions. The Mg-chlorin e_6 diester-GANTREZ AN complex (chlorophyll a/polymer) was made by aminolysing the chlorophyll ring V with 1, 6-hexanediamine to give an intermediate product, Mg-chlorin e_6 -6-N-(6' -aminohexyl) carboxamide, phytyl methyl ester. This was attached to GANTREZ AN by linkage of the 6'-amine to a polymer anhydride unit. The remaining anhydride units were treated with ammonium hydroxide to give the half amide salt, poly (methyl vinyl ether/maleamic acid, ammonium salt). The chlorophyll a/polymer has major absorption maxima at 641 nm and 415 nm. |
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