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Keywords:

  • BODIPY dyes;
  • near-infrared fluorophores;
  • fluorescent indicators;
  • charge transfer;
  • ring fusion

We present an overview of the state of the art in long-wavelength boron–dipyrromethene (BODIPY) fluorophores, focusing on strategies to shift the absorption and emission bands into the red/near-infrared (NIR) range of the spectrum. This report also discusses chemical modifications of the chromophoric core to obtain analyte-responsive fluorophores, including examples of pH and metal ion indicators. Finally, we present a new series of phenanthrene-fused BODIPY dyes, emitting with high efficiency in the red/NIR region of the spectrum, as well as discussing potential applications thereof as probes.