Optical dephasing of the S1 ← S0 transition of free-base porphin in an n-decane host studied by photochemical hole-burning: a case of slow exchange |
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| Authors: | AIM Dicker J Dobkowski S Völker |
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| Institution: | Center for the Study of the Excited States of Molecules, Gorlaeus and Huygens Laboratories, University of Leyden, Leyden, The Netherlands |
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| Abstract: | The homogeneous width and frequency of S1 ← S0 0-0 transitions of free-base porphin in site B of n-decane are studied by photochemical hole-burning (T = 1.2–4.2 K). A localized phonon mode of 7 cm?1 is identified as a phonon sideband and holes burnt into it yield a lifetime of 115 ± 20 ps. The results are consistent with the exchange model for slow exchange. |
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| Keywords: | Present address: Institute of Physical Chemistry Polish Academy of Science 01-224 Warsaw Poland |
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