Double resonance spectroscopy of phenol(H2O)(1-12): evidence for ice-like structures in aromate-water clusters?

Phenol(H2O)(n), clusters have been studied in the electronic ground state b y dispersed fluorescence spectroscopy and in the electronically excited sta te by means of two-color resonant two-photon ionization (R2PI), spectral ho le burning and rotationally resolved laser-induced fluorescence. Resonant s pectra up to a cluster size of n=12 have been obtained by two-color R2PI un der 'soft' ionization conditions. The analysis of spectral shifts and of th e intermolecular vibrations in both electronic stares is used to assign str uctures for these bi-, tri- and (partially) retracoordinated hydrogen bonde d systems, which may be comparable to H-bond-deficient water structures at the surface of liquid water and ice. (C) 1998 Elsevier Science B.V. All rig hts reserved.