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Thermal stability of chlorophyll <Emphasis Type="Italic">a</Emphasis> derivatives containing hydrophilic groups |
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| Authors: | D B Berezin V V Makarov S S Guseinov Yu V Romanenko I S Khudyaeva O M Startseva D V Belykh A V Kustov |
| Institution: | 1.Research Institute of Macroheterocyclic Chemistry,Ivanovo State University of Chemistry and Technology,Ivanovo,Russia;2.Krestov Institute of Solutions Chemistry,Russian Academy of Sciences,Ivanovo,Russia;3.Institute of Chemistry, Komi Scientific Center, Ural Branch,Russian Academy of Sciences,Syktyvkar,Russia |
| Abstract: | Trends in thermal stability of aromatic macroheterocycles based of pheophorbide a and chlorin e 6 containing hydrophilic groups have been revealed by means of thermogravimetric analysis at 298–1223 K under inert atmosphere. Methylpheophorbide a and 13(1)-N-methylamide of chlorin e 6 are the most stable, the decomposition onset temperature being t o 351 and 333°С. Their functional substitution leads t o the reduction in thermal stability. Depending on the macrocycle structure the decrease in t o can reach 20–200°С. |
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