Crystal structures and optical properties of novel fluorene-bithiophene and trithiophene-based diols

Jie Liu, Xu Tang Tao, Tao He, Hai Dong Ju, Wen Tao Yu, Min Hua Jiang

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Two novel compounds, 2,5-bis(9-hydroxyfluoren-9-yl)-[2,2′] bithiophene (BHFBT) and 2,5-bis(9-hydroxyfluoren-9-yl)-[2,2′:5′,2″] trithiophene (BHFTT) consisting of thiophene rings and two fluorenyl groups have been synthesized and characterized. The crystal structures were determined by single crystal X-ray diffraction method. The compound BHFBT maintained guest-free crystal structure, but BHFTT only obtained crystal structure with inclusion of guest molecules. The two fluorenyl groups were situated at opposite sides for BHFBT while at the same side for BHFTT. Consequently, the two C-OH bonds directed to the same side to each other for BHFBT but directed to opposite sides for BHFTT. Red shift of their optical absorption and emission spectra has also been observed with the increasing number of thiophene rings.

Original languageEnglish (US)
Pages (from-to)425-430
Number of pages6
JournalMaterials Chemistry and Physics
Volume108
Issue number2-3
DOIs
StatePublished - Apr 15 2008

Keywords

  • Crystal structure
  • Organic compounds

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