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The molecular recognition interaction of α-cyclodextrin, β-cyclodextrin and hydroxypropyl-β-cyclodextrin by para-aminobenzoic acid (PABA) species was studied by using steady-state fluorescence measurements. PABA can exist as one of three species (an anionic, neutral on cationic species) due to its amphoteric property. The various factors affecting the inclusion process were examined in detail. The...
Cyclodextrins (CDs), which are spectroscopically inert, were converted into fluorescent CDs by modification with one or two fluorophores. Many fluorescent CDs changed the fluorescent intensities upon addition of guest compounds, causing the locational change of the fluorophore mostly from inside to outside of the CD cavities. On this basis, the fluorescent CDs were used as fluorescent chemosensors...
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