Abstract
Irradiating diphenylcyclopropenone (DPCP) with a UV light, diphenylacetylene (DPAC) is produced by decarbonylation reaction with a quantum yield of unity. Previously we reported that DPAC in the excited singlet states is formed immediately after the picosecond laser pulse excitation shorter than 320 nm.1 In this paper we present the results of the transient absorption measurements of DPCP in c-hexane with a higher time resolution. Transient absorption band which can be assigned to the excited state of DPCP was observed around 470 nm.
© 1996 Optical Society of America
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