We endeavour to explore the applicability of a new fluorescent molecular reporter dyes (compound 1 and compound 2) for supramolecular chemistry of β-CD, and this work puts a signature towards generalization of the field of viable application of ESIPT probes in these directions. While most
studies to monitor the action of urea on probe-cyclodextrin binding have been concerned to elucidate the effect at a substantial cyclodextrin concentration.