Therefore, we were able to generate transient aggregates and excimers using this approach and carry out up to 25 fuel cycles, which compares favourably with the state of the art. Based on these proof-of-principle results, we believe that the non-equilibrium steady states from acylphosphates will find further uses in molecular machines and dissipative self-assemblies. With the use of acylphosphate excimers in optical catalyst screenings, we showcase powerful methodology that we expect to be broadly useful for identifying efficient catalysts reliably and in a short amount of time.