Syntheses of novel fluorinated dibenzo[a,c]phenazine comprising polymers for electrochromic device applications
NEW JOURNAL OF CHEMISTRY, cilt.46, ss.14826-14839, 2022 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 46
- Basım Tarihi: 2022
- Doi Numarası: 10.1039/d2nj02775e
- Dergi Adı: NEW JOURNAL OF CHEMISTRY
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Compendex, EMBASE, DIALNET
- Sayfa Sayıları: ss.14826-14839
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
In this study, two novel fluorinated dibenzo[a,c]phenazine derivatives, 2,7-bis(5-bromo-4-hexylthiophen2-yl)-11-fluorodibenzo[a,c]phenazine (TFBPz) and 2,7-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-11-
fluorodibenzo[a,c]phenazine (EFBPz), were synthesized by coupling fluorodibenzo[a,c]phenazine (FBPz)
with electron rich 3-hexylthiophene and ethylene dioxythiophene (EDOT) units. The monomers were
polymerized electrochemically and their electrochemical, spectroelectrochemical and electrochromic
behaviors were studied. Then, PTFBPz and PEDOT comprising electrochromic device was constructed
and reported. Comparing both polymers in terms of their redox potentials, as expected, PEFBPz showed
a lower oxidation potential due to the insertion of an electron rich EDOT unit into the polymer chain,
which increased the electron density significantly. EDOT comprising dibenzo[a,c]phenazine derivative
PEFBPz exhibited a red shifted neutral state absorption with lower optical band gap values compared to
those of PTFBPz. Furthermore, three novel D–A type dibenzo[a,c]phenazine comprising polymers
(PBDT-TFBPz, PBDT-FBPz and PSi-TFBPz) were synthesized chemically and all polymers were
investigated in terms of their electrochromic and physicochemical behaviors.