1,3,6,8-Tetraphenylpyrene derivatives: Towards fluorescent liquid-crystalline columns?

Véronique De Halleux*, Jean Philippe Calbert, Patrick Brocorens, Jérôme Cornil, Jean Paul Declercq, Jean-Luc Bredas, Yves Geerts

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

151 Scopus citations

Abstract

Tetraphenylpyrene has been selected as a discotic core to promote liquid-crystalline fluorescent columns in view of its high fluorescence quantum yield in solution and ease of substitution by flexible lateral side chains. The synthesis and characterization of ten new derivatives of pyrene have been carried out; the pyrene core has been substituted at the 1,3,6,8-positions by phenylene rings bearing alkoxy, ester, thioether, or tris(alkoxy)benzoate groups on the para position; the compounds have been characterized by mass spectrometry and 1HNMR and UV-vis spectroscopies. In order to generate liquid-crystalline phases, the nature, number, and size of the side chains as well as the degree of polarity around the tetraphenylpyrene core have been varied. However, the desired liquid-crystalline behavior has not been observed. The supramolecular order together with the absorption and emission properties in solution and the solid state are discussed and compared to theoretical predictions. Quantum-chemical calculations rationalize the high solid-state fluorescence of a tetraphenylpyrene derivative for which the crystal structure has been determined.

Original languageEnglish (US)
Pages (from-to)649-659
Number of pages11
JournalAdvanced Functional Materials
Volume14
Issue number7
DOIs
StatePublished - Jul 1 2004

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Condensed Matter Physics
  • Electrochemistry

Fingerprint Dive into the research topics of '1,3,6,8-Tetraphenylpyrene derivatives: Towards fluorescent liquid-crystalline columns?'. Together they form a unique fingerprint.

Cite this