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- Publisher
- Springer Journals
- Copyright
- Copyright
- Subject
- Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
- ISSN
- 0922-6168
- eISSN
- 1568-5675
- DOI
- 10.1163/156856796X00575
- Publisher site
- See Article on Publisher Site
Abstract
Chlorophyllin a prepared by the saponification of chlorophyll a was conjugated with α-(3-aminopropyl)-ω-methoxypoly(oxyethylene), PEG-NH2, to form PEG-chlorophyllin through acid-amide bonds. PEG-chlorophyllin was readily soluble not only in aqueous solution but also in organic solvents. The absorption maxima of the conjugate were located at 657 nm and 418 nm in aqueous solution, and at 656 nm and 422 nm in benzene. The conjugate seems to be more stable toward light-illumination than uncoupled chlorophyllin. Furthermore, PEG-chlorophyllin possessed a potent photosensitizing activity to produce superoxide anion during the illumination, although chlorophyllin immediately lost its activity by light-illumination.
Journal
Research on Chemical Intermediates – Springer Journals
Published: Apr 14, 2009