Ground-state reactions manipulation

Following fluorescence, the non-equilibrium ground-state has a reaction field R. Manipulation of these equations shows that the difference in energy of the 0-0... 

Optimizing the structure and interactions of a supramolecular system still requires sophisticated design, synthesis, and experimental feedback even in the ground state, and should be much more difficult for supramolecular photochemical reactions. In this context, the combined use of external factors, such as temperature, solvent and pressure, provides a versatile and convenient tool for manipulating photochemical reactions in supramolecular system. The role of these external factors is closely correlated with the properties, in particular rigidity, of supramolecular host employed, and the outcomes are often significantly different from those observed in conventional photoreactions, which would be another reason for performing photochemical reaction in supramolecular system. 

---