Bidirectional switching of near IR emitting boradiazaindacene fluorophores

Creative Commons License

Deniz E., Isbasar G. C., Bozdemir O. A., YILDIRIM L., Siemiarczuk A., AKKAYA E. U.

ORGANIC LETTERS, vol.10, no.16, pp.3401-3403, 2008 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 10 Issue: 16
  • Publication Date: 2008
  • Doi Number: 10.1021/ol801062h
  • Journal Name: ORGANIC LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3401-3403
  • Middle East Technical University Affiliated: Yes


Two novel distyryl-boradiazaindacene dyes with dimethylaminostyryl and pyridylethenyl substituents display opposite spectral shifts on protonation with TFA in organic solvents. This bidirectional switching of the dyes can be shown to be directly related to ICT donor and acceptor characteristics of the substituents attached to the BODIPY core. The observed spectral response of these dyes could be very useful in the design of novel NIR fluorescent ratiometric probes for pH.