Complex formation between rhodamine B and poly(sodium 4-styrenesulfonate) studied by1H-NMR

Ignacio Moreno-Villoslada, Rodrigo González, Susan Hess, Bernabé L. Rivas, Toshimichi Shibue, Hiroyuki Nishide

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

A 1H NMR study is presented for the binding of rhodamine B (RB) to the polyanion containing aromatic groups poly(sodium 4-styrenesulfonate) (PSS), which is also evidenced by diafiltration. 1H NMR spectra showed an accentuated upfield shift of proton H6′ of the benzoic ring of RB at pH 7, indicating the stacking of RB onto PSS. The corresponding structure is proposed which is in accordance to Hunter and Sanders rules. At pH 2, an upfield shift of the xanthene protons of RB would indicate a highly condensed state for this molecule.

Original languageEnglish
Pages (from-to)21576-21581
Number of pages6
JournalJournal of Physical Chemistry B
Volume110
Issue number43
DOIs
Publication statusPublished - 2006 Nov 2

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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