Abstract
Charge-transfer (CT) complexation between indoxyl sulfate (3-indolyl hydrogen sulfate) (InS-: electron donor) and 9,10-anthraquinone-2-sulfonate (2-AQS-: electron acceptor) around cationic polymers (poly-(allylammonium chloride) (PAAH+Cl-) and poly(1,1-dimethylpiperidinium-3,5-diylmethylene chloride) (PDPD+-Cl-)) were studied by absorption and fluorescence spectroscopies and molecular orbital calculation. New broad UV bands corresponding to CT complexation between InS- and 2-AQS- at low concentration (ca. 1 × 10-4 M) was observed when these polymers were present in the systems. A continuous variation method for the InS-/2-AQS-/polymer systems showed that a novel type (InS-: 2-AQS-= 2:1) CT complex preferentially formed in the vicinity of these polyions. Stoichiometric ratio of the present CT complex was not affected by the structure and charge density of polyelectrolytes.
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Kawabata, Y., Itaya, T., Ueda, K. et al. Novel-Type Charge-Transfer Complex Formation between Indoxyl Sulfate and Anthraquinonesulfonate Ions in an Aqueous Polyelectrolyte Solution. Polym J 35, 50–55 (2003). https://doi.org/10.1295/polymj.35.50
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DOI: https://doi.org/10.1295/polymj.35.50