![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
The novel o-phenylenediseleno bridged bis(cyclodextrin)s and its complexes with platinum(IV) and palladium(II) ions have been synthesized and characterized by elemental analyses, 1H NMR, infrared, and thermal analysis. Fluorescence spectro-photometric titrations have been performed in aqueous buffer solution (pH 7.20) at 25.0°C to give the complex stability constants (Ks ) and Gibbs free energy change (-ΔG°) for the 1:1 inclusion complexation of natural β-cyclodextrin, the o-phenylenediseleno bridged bis(cyclodextrin)s 1 and its platinum(IV) complex 2 with 8-Anilino-1-naphtha-lenesulfonic Acid Ammonium Salt (ANS ammonium). The molecular inclusion ability of ANS ammonium by the three host compounds are discussed from the viewpoints of size/shape-fit concept and the multipoint recognition mechanism.