Abstract
The quantum yields of intramolecular photochemical reactions were determined by means of absorption saturation measurements. The methods described enable the reaction quantum yields to be determined absolutely without a knowledge of the absorption cross sections or the concentrations of the transients produced photochemically. The methods are based on irradiation by intense nanosecond or picosecond pulses into the S0 → S1 transition of the photochemically formed transient which results in absorption saturation of this transition. The concentration of this transient and the absorption cross section of the S0 → S1 transition can be calculated from the experimentally determined intensity-dependent transmission of the light pulses.
Published Version
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