Luminescence of ion-pair I2 (D′) state in cryogenic perfluorocarbons and SF6 solids

摘要: Luminescence of I2-doped CnF2n+2 (n = 1–4) and SF6 cryogenic solids has been studied using an optical-optical double resonance excitation technique. Experiments have shown that the lowest ion-pair state I2(D′) is stable with respect to chemical reaction fast predissociation in these hosts. The red shift I2(D′ → A′) transition energy relative gas phase shows no correlation host polarizability ∼3500 cm−1 for all solids. Besides solvation energy, a part due repulsive interaction I2(A′) molecules. In CF4 solids, spectrum evidence coupling between electronic guest molecule vibrational This manifests itself via satellite band, which shifted by one quantum strongest IR-active mode (SF6) molecule. lifetime molecular hosts varies from 2.5 ns 13 solid.