Ethynylene-analogues of hemicurcuminoids: Synthesis and ground- and excited properties of their boron difluoride complexes
- 주제(키워드) Boron difluoride complex , Charge transfer , Fluorescence , Photophyics
- 등재 SCIE, SCOPUS
- 발행기관 Elsevier Ltd
- 발행년도 2017
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000141614
- 본문언어 영어
- Published As http://dx.doi.org/10.1016/j.dyepig.2017.02.005
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
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. © 2017 Elsevier Ltd
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