Synthesis and characterization of luminescent polystyrene derivatives with sterically protected fluorenyl- and carbazolylborane moieties

Kshitij Parab, Ami Doshi, Fei Cheng, Frieder Jäkle

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

Polystyrene was functionalized with luminescent fluorenyl- and carbazolylborane pendant moieties. Because of an interaction of the empty p orbital on boron with the extended π-systems of fluorene or carbazole, the resulting polymeric materials exhibit intense blue emission with maxima in the range 390-420 nm. The solution quantum yields were 65% for the fluorene derivative and 68 and 11% for two different carbazole derivatives, respectively. The stability of the borylated polymers was enhanced by attachment of a bulky triisopropylphenyl group to each of the boron centers. Thus, the polymers were found to be stable for a period of over 1 month. Thermal stability up to ca. 250 °C was confirmed by thermogravimetric analysis.

Original languageEnglish (US)
Pages (from-to)5961-5967
Number of pages7
JournalMacromolecules
Volume44
Issue number15
DOIs
StatePublished - Aug 9 2011

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All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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