A highly emissive cruciform triarylborane as a ratiometric and solid state fluorescence sensor for fluoride ions

✍ Scribed by Yi-Hong Zhao; Hong Pan; Guang-Liang Fu; Ji-Mao Lin; Cui-Hua Zhao

• Book ID: 104099313
• Publisher: Elsevier Science
• Year: 2011
• Tongue: French
• Weight: 553 KB
• Volume: 52
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/j.tetlet.2011.05.076

✦ Synopsis

We disclosed a novel cruciform tri-coordinate organoboron compound, 2 0 ,5 0 -bis{[(4-dimesitylboryl)phenyl]ethynyl}-1 0 ,4 0 -bis[(4-N,N-diphenylamino)phenyl]-[1,1 0 :4 0 ,1 0 ]terphenyls, which displays a characteristic intramolecular charge transfer transition and is highly emissive both in solutions and solid state. The complexation with fluoride ions induces a large blue shift in fluorescence, enabling ratiometric fluorescence sensing of fluoride. In addition, its prompt response to fluoride ions was also observed even in the solid state.