title: Supramolecular interactions of nonsteroidal anti-inflammatory drug in nanochannels of molecular containers: a spectroscopic, thermogravimetric and microscopic investigation.
abstract: Supramolecular host-guest complexation between the nonsteroidal anti-inflammatory drug indomethacin (IMC) and molecular containers were investigated. The weakly fluorescent drug molecule becomes highly fluorescent on complexation with different molecular containers, and time-resolved fluorescence emission spectroscopy reveals that the lifetime components of IMC significantly increase in the presence of molecular containers, compared with the lifetimes in neat water. The respective solid host-guest complexes were synthesised and characterised by Fourier transform infrared and (1) H nuclear magnetic resonance spectroscopic analysis. Microscopy techniques were used to analyse modifications of the surface morphology, owing to the formation of supramolecular complexes. The effect of the molecular container on the optical properties of IMC has also been investigated to determine the effect of nanochannels of different size and structure.
authors.affiliation: Department of Chemistry, Indian Institute of Technology Patna, Patliputra Colony, Patna 800013, Bihar (India), Fax: 91-612-2277383.
authors.forename: Banibrata
authors.initials: B
authors.lastname: Maity
authors.forename: Aninda
authors.initials: A
authors.lastname: Chatterjee
authors.forename: Sayeed Ashique
authors.initials: SA
authors.lastname: Ahmed
authors.forename: Debabrata
authors.initials: D
authors.lastname: Seth
mesh_terms: D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000737:chemistry*; D003505:Cyclodextrins / Q000737:chemistry; D007213:Indomethacin / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D018625:Microscopy, Atomic Force; D049329:Nanostructures / Q000737:chemistry*; D011789:Quantum Theory; D013050:Spectrometry, Fluorescence; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D013818:Thermogravimetry
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D003505:Cyclodextrins; D007213:Indomethacin
keywords: cyclodextrins; drug delivery; fluorescent probes; host-guest systems; supramolecular chemistry