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Thermal stability of chlorophyll a derivatives containing hydrophilic groups

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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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Correspondence to D. B. Berezin.

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Original Russian Text © D.B. Berezin, V.V. Makarov, S.S. Guseinov, Yu.V. Romanenko, I.S. Khudyaeva, O.M. Startseva, D.V. Belykh, A.V. Kustov, 2017, published in Zhurnal Obshchei Khimii, 2017, Vol. 87, No. 7, pp. 1164–1168.

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Berezin, D.B., Makarov, V.V., Guseinov, S.S. et al. Thermal stability of chlorophyll a derivatives containing hydrophilic groups. Russ J Gen Chem 87, 1557–1561 (2017). https://doi.org/10.1134/S1070363217070192

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  • DOI: https://doi.org/10.1134/S1070363217070192

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