Understanding behaviour of vitamin-C guest binding with the cucurbit[6]uril host. Issue 5 (4th May 2017)

• Record Type: Journal Article
• Authors: Pandey, Shubham; Soni, Vineet Kumar; Choudhary, Ganpat; Sharma, Pragati R.; Sharma, Rakesh K.
• Is Part Of: Supramolecular chemistry. Volume 29:Issue 5(2017)
• Page Start: 387
• Page End: 394
• Publication Date: 2017-05-04
• Subjects: Sodium ascorbate -- cucurbit[6]uril -- 1:1 inclusion complex -- NMR studies; Macromolecules -- Periodicals; Supramolecular chemistry -- Periodicals; 547.005
• DOI: 10.1080/10610278.2016.1243791
• Languages: English
• ISSNs: 1061-0278

Abstract

Abstract: The present study describes non-covalent interaction and complexation behaviour of sodium ascorbate (SA) with cucurbit[6]uril (CB[6]) at neutral pH in aqueous Na2 SO4 solution. The interaction behaviour is investigated using various analytical techniques like NMR, UV–Vis, fluorescence, TGA and DRS. The substantial increase in the intensity of emission and absorption spectra of sodium ascorbate is observed. The Benesi–Hildebrand evaluation method is used to determine the stoichiometry and equilibrium constant of the cucurbit[6]uril–sodium ascorbate complex, which suggested the 1:1 complex. Time-dependent 1 H NMR, 13 C CP MAS and CD studies also echoed non-covalent interaction between SA with CB[6]. Abstract :