Excimer formation in jet-cooled 2-methoxynaphthalene clusters

Excimer formation in jet-cooled 2-methoxynaphthalene clusters has been inve stigated by measuring laser-induced fluorescence excitation and dispersed f luorescence spectra. The results show that unlike the dimers of naphthalene and 1-methoxynaphthalene, 2-methoxynaphthalene dimer does not isomerize to excimer configuration from the origin region of the lowest excited state. Excimer emission has been observed only from some of the clusters of size b igger than a dimer. Geometric details of the clusters are considered to be the most important factor for the observed size-dependent behavior in excim er formation dynamics. (C) 2001 Elsevier Science B.V. All rights reserved.