Using time-resolved photoacoustic calorimetry to study triplet energy and lifetime for benzophenone-KI system
Using time-resolved photo鈉oustic calorimetry to study triplet energy and lifetime for benzophenone-KI system

Time-resolved photoacoustic calorimetry has been expanded to allow the simultaneous determination of the dynamics and energetics of photoinduced reaction occurring on fast timescales, principally ns and μs. Data analysis requires deconvolution of photoacoustic signals for a sum of exponentials. This technique with PZT transducer is now first applied to investigating the quenching of the benzophenone triplet state by KI in methanol, and gives kinetic and thermodynamic results in excellent agreement with the previous value in acetonitrile.