Abstract

Electronic structures and energy relaxation processes have been studied in the low-lying triplet states of chlorobenzene in rigid matrices at 77 K. Time-resolved phosphorescence S0 ⇐ T excitation spectra, phosphorescence spectra and their decays by S0 → T excitation have been measured. Analysis of the results confirms the 3(π,σ★) state lying close to the lowest 3(π,π★) state and supports the dual phosphorescence emission mechanism proposed previously.

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