Gel Permeation Chromatographic Characterization of Sulfonated Polystyrenes

Creation of Circularly Polarized Luminescence from an Achiral Polyfluorene Derivative through Complexation with Helix‐Forming Polysaccharides: Importance of the meta‐Linkage Chain for Helix Formation

“…For molecular weight measurements of the polymers, DMSO that contained tetraethylammonium chloride (1.0 g L À1 ) was employed as the eluent for SEC. [19] …”

Nitroxide‐Mediated Polymerization of an Organo‐Soluble Protected Styrene Sulfonate: Development of Homo‐ and Random Copolymers

“…Since a solvent's properties can be reproduced with a mixture of solvents, an appropriate solvent system should be possible to diminish the adsorption properties or solvation effects of polymers with polar and non‐polar properties. For example, polar polymers with sulfonate groups as ionic substituents have a reduced solubility in nonpolar solvents and a two‐component solvent system of 2 wt% TOA in THF was required and used to fully dissolve the polymer 50. All of the SS‐TOA‐containing homopolymers and copolymers were thus analyzed with 2 wt% TOA in THF solutions.…”

Synthesis of ?- and ?,?-sulfonatotelechelics based on homopolymers and block copolymers ofn-butyl methacrylate andt-butyl methacrylate

“…This solvent system was used by Siebourg et al 12 for the analysis of randomly sulfonated polystyrene ionomers and subsequently by Quirk and Kim 17 for -lithium polystyrene sulfonates. In contrast to -lithium polystyrene sulfonates, reported to have larger elution volumes than their precursors in this ternary mixture, the sulfonated PnBMA telechelics elute Table I; both curves were recorded at the same injected polymer concentration) and for (c) unfunctionalized PnBMA-b-PtBMA precursor and (d) corresponding sulfonated PnBMA-b-PtBMA-(CH 2 ) 3 SO 3 Li (sample MF2 in Table II; matching curves were recorded at the same injected polymer concentration).…”

“…The analysis of the sulfonated telechelics was performed with a ternary eluent of THF/ dimethyl formamide (DMF; 10/1 v/v) containing 2 g/L LiNO 3 . 12 In each case, the system was calibrated with linear polystyrene standards (Polymer Laboratories). The SEC molecular weights reported are apparent (polystyrene-equivalent) values based on the calibration curve.…”