Ethynylene-analogues of hemicurcuminoids: Synthesis and ground- and excited properties of their boron difluoride complexes

Bogdan Štefane, Franc Požgan, Eunsun Kim, Eunyoung Choi, Jean Charles Ribierre, Jeong Weon Wu, Miguel Ponce-Vargas, Boris Le Guennic, Denis Jacquemin, Gabriel Canard, Elena Zaborova, Frédéric Fages, Anthony D'Aléo

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The synthesis, characterization and (TD)-DFT calculations of the electrochemical and photophysical properties of novel ethynylene-analogues of hemicurcuminoids are described. These dyes are both emissive in solution and in the solid state. While compounds that emit through an efficient charge transfer (CT) state show solvatochromic behaviour associated with low fluorescence quantum yields, those lacking of donor groups show high fluorescence quantum yields of 70–80%, in solution. The latter dyes also present the advantage to emit in the solid state in the visible region with fluorescence quantum yields up to 23%. Their condensed phase spectrum can be bathochromically shifted to the near infrared region (742 nm) by appending a strong donor group.

Original languageEnglish
Pages (from-to)38-47
Number of pages10
JournalDyes and Pigments
Volume141
DOIs
Publication statusPublished - Jun 1 2017

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Process Chemistry and Technology

Fingerprint Dive into the research topics of 'Ethynylene-analogues of hemicurcuminoids: Synthesis and ground- and excited properties of their boron difluoride complexes'. Together they form a unique fingerprint.

  • Cite this

    Štefane, B., Požgan, F., Kim, E., Choi, E., Ribierre, J. C., Wu, J. W., Ponce-Vargas, M., Le Guennic, B., Jacquemin, D., Canard, G., Zaborova, E., Fages, F., & D'Aléo, A. (2017). Ethynylene-analogues of hemicurcuminoids: Synthesis and ground- and excited properties of their boron difluoride complexes. Dyes and Pigments, 141, 38-47. https://doi.org/10.1016/j.dyepig.2017.02.005