When one searches the whole dataset for extremes, the molecule 7 is characterised by: a) maximum fluorescence lifetime in THF and aggregate, b) minimum knr in THF and aggregate, c) minimum kr in aggregate, but also d ) maximum kr in THF. On the contrary, its regioisomer, 3 is characterised by maximum kr in aggregate and minimal kr for THF. This means that for AIE-exhibiting fluorophores, the fast non-radiative process, that is promoted in solution, becomes confined in solid due to restriction of intramolecular rotation or vibration effect.