Excited-State Dynamics of 12′-Apo-β-caroten-12′-al and 8′-Apo-β-caroten-8′-al in Supercritical CO2, N2O, and CF3H

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Excited-State Dynamics of 12′-Apo- -caroten-12′-al and 8′-Apo- -caroten-8′-al in Supercritical CO2, N2O, and CF3H

The ultrafast excited-state dynamics of the two carbonyl carotenoids 12′-apo-caroten-12′-al (12′C) and 8′-apo-caroten-8′-al (8′C) have been investigated in supercritical (sc) fluids by femtosecond transient absorption spectroscopy. CO2, N2O, and CF3H were employed as solvent media over the pressure range 85-300 bar and at the temperatures 308 and 323 K. The carotenoids were excited to the S2 st...

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ژورنال

عنوان ژورنال: The Journal of Physical Chemistry B

سال: 2008

ISSN: 1520-6106,1520-5207

DOI: 10.1021/jp807086n