Interaction of pyromellitic diimide derivatives with beta-cyclodextrin and anthracene-appended beta-cyclodextrin: rim binding vs inclusion complexation.
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.
Balan
Bijitha
B
Photosciences and Photonics, Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695 019, India.
Sivadas
Deepthi L
DL
Gopidas
Karical R
KR
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
D000873:Anthracenes; D007096:Imidoesters; D007202:Indicators and Reagents; D047392:beta-Cyclodextrins; C045143:pyromellitic diimide; D000097566:Cyclophanes