Picosecond dynamics for the photocycloaddition of trans-stilbene with tetramethylethylene: No evidence of an exciplex

Article abstract of DOI:10.1021/ja00077a008

Picosecond absorption spectroscopy is used to examine the temperature dependence of the dynamics for the quenching of the first excited singlet state of trans-stilbene (TS*) by tetramethylethylene (TME) in hexane. The rate of quenching TS* by TME is 3.6 × 10⁹ M^-18^-1d it is virtually independent of temperature over the temperature range of -8.0 to 36. °C. There is no kinetic evidence for reversible exciplex formation.