Acidic properties of hypericin and its octahydroxy analogue in the ground and excited states

Dalia Freeman; Felix Frolow; Evgeny Kapinus; David Lavie; Gad Lavie; Dan Meruelo; Yehuda Mazur

doi:10.1039/C39940000891

Acidic properties of hypericin and its octahydroxy analogue in the ground and excited states

Dalia Freeman, Felix Frolow, Evgeny Kapinus, David Lavie, Gad Lavie, Dan Meruelo, Yehuda Mazur^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

pH dependent absorption and fluorescence spectra of hypericin 1 and its octahydroxy analogue 3 demonstrate their acidic properties, their deprotonation occuring in the ground and excited states from OH in the bay region and in the peri position to the carbonyl, respectively; the presence of the anion of 1 in the crystalline state is established by X-ray diffraction.

Original language	English
Pages (from-to)	891-892
Number of pages	2
Journal	Chemical Communications
Issue number	7
DOIs	https://doi.org/10.1039/C39940000891
State	Published - 1994
Externally published	Yes

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title = "Acidic properties of hypericin and its octahydroxy analogue in the ground and excited states",

abstract = "pH dependent absorption and fluorescence spectra of hypericin 1 and its octahydroxy analogue 3 demonstrate their acidic properties, their deprotonation occuring in the ground and excited states from OH in the bay region and in the peri position to the carbonyl, respectively; the presence of the anion of 1 in the crystalline state is established by X-ray diffraction.",

author = "Dalia Freeman and Felix Frolow and Evgeny Kapinus and David Lavie and Gad Lavie and Dan Meruelo and Yehuda Mazur",

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doi = "10.1039/C39940000891",

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AU - Freeman, Dalia

AU - Frolow, Felix

AU - Kapinus, Evgeny

AU - Lavie, David

AU - Lavie, Gad

AU - Meruelo, Dan

AU - Mazur, Yehuda

PY - 1994

Y1 - 1994

N2 - pH dependent absorption and fluorescence spectra of hypericin 1 and its octahydroxy analogue 3 demonstrate their acidic properties, their deprotonation occuring in the ground and excited states from OH in the bay region and in the peri position to the carbonyl, respectively; the presence of the anion of 1 in the crystalline state is established by X-ray diffraction.

AB - pH dependent absorption and fluorescence spectra of hypericin 1 and its octahydroxy analogue 3 demonstrate their acidic properties, their deprotonation occuring in the ground and excited states from OH in the bay region and in the peri position to the carbonyl, respectively; the presence of the anion of 1 in the crystalline state is established by X-ray diffraction.

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Acidic properties of hypericin and its octahydroxy analogue in the ground and excited states

Abstract

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