Electro-optical properties of neutral and radical ion Thienosquaraines

V. Maltese, S. Cospito, A. Beneduci, B.C. De Simone, N. Russo, G. Chidichimo, R.A.J. Janssen

Research output: Contribution to journalArticleAcademicpeer-review

27 Citations (Scopus)


Thienosquaraines are an interesting class of electroactive dyes that are useful for applications in organic electronics. Herein, the redox chemistry and electrochromic response of a few newly synthesized thienosquaraines are presented. These properties are compared to those of the commercial 2,4-bis[4-(N,N-diisobutylamino)-2,6-dihydroxyphenyl]squaraine. The stability of the radical ions formed in electrochemical processes strongly affects these properties, as shown by cyclic voltammetry, in situ spectroelectrochemistry, and quantum chemical calculations. Furthermore, all of the dyes show aggregation tendency resulting in panchromatic absorption covering the whole UV/Vis spectral range.

Original languageEnglish
Pages (from-to)10179-10186
Number of pages8
JournalChemistry : A European Journal
Issue number29
Publication statusPublished - 11 Jul 2016


  • aggregation
  • density functional calculations
  • electrochemistry
  • radical ions
  • squaraines


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