Apart from planarized conversion-type RIV molecules and venturing into the realm of aggregation science, stringent delineation parameters addressing twisting-type and bending-type RIV molecules presently remain elusive. Protocols of observation and computation simulation at our disposal seem inadequate for a precise portrayal of molecular locomotion within solutions. Furthermore, the aggregation methods such as disordered and crystalline aggregation can also impact the actual emission configurations of molecules. A more quantum explanation of the mechanism is needed to classify behavior and the classification standards for RIV-type molecules are diverse, involving not just small organic molecules, but also supramolecules (MOFs, hostguest structures), macrocyclic compounds, nanocluster , and polymers . The related interactions include chemical bonds, hydrogen bonds, and coordination bonds. From the standpoint of functional materials design, we incorporate a model from materials mechanics (Figure ) to instinctively segregate the residual RIV molecules into twisting and bending vibrational models .