DiI iodide1 is one of lipophilic fluorescent stains for labeling membranes and other hydrophobic structures. The fluorescence of these environment-sensitive dyes is greatly enhanced when incorporated into membranes or bound to lipophilic biomolecules such as proteins although they are weakly fluorescent in water.
3-Morpholinobenzanthrone serves as a fluorescent membrane probe, characterized by higher excited-state dipole moment values compared to those in the ground-state [1].
DOPE-CF, a pH-sensitive fluorescent membrane-labeled probe with a fluorescein moiety, is a weak acid with a highly fluorescent conjugated base, capable of binding to phospholipid ethanolamine lipids [1].