Fluorophotometric Determination of an Equilibrium Constant for the Formation of a Molecular Complex between Fluoranthene and Benzene in Solution

A fluorophotometric method was used to obtain equilibrium constants for the formation of a van der Waals molecular complex between fluoranthene and benzene in the ground state. The equilibrium constant for the above-mentioned complex formation is estimated to be 0.13 dm3 mol−1, which compares well with that (K = 0.15 dm3 mol−1) obtained from a traditional electronic absorption method.