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- W3026215035 endingPage "112592" @default.
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- W3026215035 abstract "Zinc methyl 3-hydroxymethyl-pyropheophorbides-a possessing a hydroxymethyl or 2-hydroxyethyl group at the 20-position were prepared by chemical modification of naturally occurring chlorophyll-a. The synthetic bacterio-chlorophyll-c analog bearing the 201-hydroxy group self-aggregated in an aqueous Triton X-100 micellar solution to give large oligomers with red-shifted and broadened electronic absorption bands, which was similar to the chlorophyllous J-aggregates in the main light-harvesting antennas of green photosynthetic bacteria. By contrast, the other 202-hydroxylated analog did not aggregate under the same conditions to remain its monomeric species. The red shift in the longest wavelength (Qy) band by the self-aggregation of the former analog was greater than that of the corresponding 201-methyl substitute with a similar size (CH3 ≈ OH). These results could be ascribable to the less sterically demanding and more electron-withdrawing 20-hydroxymethyl group, compared with more interacting 2-hydroxyethyl and more electron-donating ethyl groups at the 20-position." @default.
- W3026215035 created "2020-05-29" @default.
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- W3026215035 date "2020-09-01" @default.
- W3026215035 modified "2023-10-10" @default.
- W3026215035 title "Effect of additional hydroxy group on self-aggregation of synthetic zinc bacteriochlorophyll-c analogs" @default.
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- W3026215035 doi "https://doi.org/10.1016/j.jphotochem.2020.112592" @default.
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