ESIPT-based fluorescent enhanced probes prompted by methylated β-cyclodextrin for the detection of thiophenols

Improved emission performance of benzo[a]phenoxazine in aqueous solution through host–guest interaction

“…7 However, the binding affinity between M-β-CD and the fluorescent probe is relatively weak, with an order of magnitude of the complexation constant ranging from 10–10 2 . 8 A low host–guest complexation constant leads to an increase in the demand for β-CDs in the application of biological imaging (>800 eq. ), 9 which may have an abnormal impact on the cellular microenvironment.…”