Phenothiazine-oxadiazole push-pull fluorophores: Combining high quantum efficiency, excellent electrochemical stability and facile functionalization

Michael Y. Wong*, Louis M L LEUNG

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

A series of five novel sky-blue to green emitting push-pull fluorophores based on phenothiazine donor and 1,3,4-oxadiazole acceptor were synthesized and characterized. Their doped thin films (5 wt% in PMMA) showed high quantum efficiencies (ФPL) from 0.63 to 0.77. These fluorophores also underwent remarkably reversible oxidations and reductions suggesting their excellent electrochemical stability. Facile tuning of photophysical, thermal and electrochemical properties of the fluorophores could be achieved by optimizing the functional group attached to the 1,3,4-oxadiazole moiety. Finally, we propose that further functionalization of these fluorophores can be easily achieved and as a proof of concept the synthesis of a vinyl polymer derivative Poly(PO-Tol) was demonstrated.

Original languageEnglish
Pages (from-to)542-549
Number of pages8
JournalDyes and Pigments
Volume145
DOIs
Publication statusPublished - Oct 2017

Scopus Subject Areas

  • Chemical Engineering(all)
  • Process Chemistry and Technology

User-Defined Keywords

  • Donor-acceptor
  • Intramolecular charge-transfer
  • Push-pull
  • Structure-property relationship

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