Crystals (Jan 2020)

Morpholino-Substituted BODIPY Species: Synthesis, Structure and Electrochemical Studies

  • Hawazen Hassanain,
  • E. Stephen Davies,
  • William Lewis,
  • Deborah L. Kays,
  • Neil R. Champness

DOI
https://doi.org/10.3390/cryst10010036
Journal volume & issue
Vol. 10, no. 1
p. 36

Abstract

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Functionalization of 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) chromophores at the 2,6-positions with iodo substituents and morpholino-substituted α-methyl groups affords molecules with strong absorbance in the visible spectrum. The effect of such substitution on the solid-state arrangements, absorption, fluorescence and electronic properties of these dye molecules is reported. The spectroscopic and spectroelectrochemical measurements display intense absorptions in the UV-visible spectrum with bathochromic shifts, in comparison to unfunctionalized BODIPY, and a positive shift in redox potentials due to functionalisation of the BODIPY core. Halogen bonds are observed in the solid-state structures of both halogenated BODIPY species, which in one case leads to the formation of an unusual halogen bonded framework.

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