Abstract

We have proved that at low temperatures the protons involved in the hydrogen bonding of an organic acid dimer are delocalized on time scales longer than ~100 ps. Fluorescence line-narrowing spectra on the low temperature solid display sets of characterizable delocalized states of these protons and the assignments have yielded the asymmetries of the double-well potentials and the tunneling matrix elements. The tunneling matrix element is 4.8 × 10⁹ s⁻¹

© 1987 Optical Society of America