title: Interaction of pyromellitic diimide derivatives with beta-cyclodextrin and anthracene-appended beta-cyclodextrin: rim binding vs inclusion complexation.
abstract: Complex formation of pyromellitic diimide derivatives with beta-cyclodextrin and anthracene-appended beta-cyclodextrin was studied with use of induced circular dichroism and 1H NMR spectroscopies. It is revealed that pyromellitic diimides form rim-binding type complexes with beta-CD and in these complexes the pyromellitic diimides lie just outside of the narrow rim of the CD. With anthracene-appended beta-CD the pyromellitic diimides form true inclusion complexes. Implications of the formation of rim-binding type complexes are also discussed.
authors.affiliation: Photosciences and Photonics, Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695 019, India.
authors.forename: Bijitha
authors.initials: B
authors.lastname: Balan
authors.forename: Deepthi L
authors.initials: DL
authors.lastname: Sivadas
authors.forename: Karical R
authors.initials: KR
authors.lastname: Gopidas
mesh_terms: D000873:Anthracenes / Q000737:chemistry*; D002942:Circular Dichroism; D007096:Imidoesters / Q000737:chemistry*; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D047392:beta-Cyclodextrins / Q000737:chemistry*; D000097566:Cyclophanes
chemical_list: D000873:Anthracenes; D007096:Imidoesters; D007202:Indicators and Reagents; D047392:beta-Cyclodextrins; C045143:pyromellitic diimide; D000097566:Cyclophanes