title: Accurate determination of the ultrafast proton transfer rate in porphycene using nuclear spin relaxation.
abstract: The longitudinal (15)N relaxation rate and (15)N{(1)H} NOE enhancement were determined for porphycene in a CD2Cl2 solution. By invoking the rotational diffusion tensor of porphycene as previously determined, these data could be used to evaluate the tautomerization rate of protons in the NHN bridges. The proton transfer rate compares well to the results obtained by other authors by means of optical spectroscopy.
authors: Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland. pbernatowicz@ichf.edu.pl
authors: Piotr
authors: P
authors: Bernatowicz