Water-soluble conjugated polymers: Synthesis and optical properties

Baohan Xie, Mahuya Bagui, Ruirun Guo, Kun Li, Qing Wang, Zhonghua Peng

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Abstract

Two sets of water-soluble poly(phenylene vinylene)s were synthesized and their optical properties were studied. The aqueous solubility of all these polymers is rendered by pendant sulfonate groups. One set of polymers (polymer I series) contains, in addition to the sulfonate pendants, dimethoxy substituents, while the other (polymer II series) contains oligo(ethylene oxide) side chains. Within each set, polymers containing lithium (Ia and IIa), sodium (Ib and lib), and potassium (Ic and lie) counter ions were prepared. The two sets of polymers showed different properties from physical appearance (fiber vs film) to thermal properties and to optical properties. It was found that set I polymers, with shorter side chains, exhibit stronger aggregation in aqueous solutions than set II polymers, which led to their lower fluorescence quantum yields and lower polymer-to-MV 2+ quenching efficiencies. Within each set, the effect of counter ions on optical properties was noted.

Original languageEnglish (US)
Pages (from-to)5123-5135
Number of pages13
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume45
Issue number22
DOIs
StatePublished - Nov 15 2007

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All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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