A Bifunctional Bulky Thienothiophene Derivative; Synthesis, Electronic-Optical Properties and OLED Applications

Recep Isci, Emine Tekin, Selin P. Mucur, Turan Ozturk*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

Applying thienothiophenes (TT) as a linker, a bulky bifunctional thienothiophene, TT-TPA-TPE3, possessing triphenylamine (TPA) and tetraphenylethylene (TPE) units, was designed, synthesized, and fully characterized. Its optical and electronic properties were explained by UV-Vis spectroscopy, cyclic voltammetry (CV) and Aggregation-Induced Emission (AIE) study. TT-TPA-TPE3 exhibited positive solvatochromism in the range of solvent polarities from DMF to toluene, displaying emissions from yellowish to bluish between 480–525 nm. Utilizing TT-TPA-TPE3 as a hole-transporting layer, its organic light emitting devices (OLEDs) were fabricated and their performances were investigated. The synthesized emitter exhibited green and blue emissions in device applications. A mega Stoke's shift of 114 nm in THF and a large Stoke's shift of 78 nm on ITO were observed. A maximum luminance of 580 cd m−2 and a turn-on voltage of 7.01 V were obtained, indicating that TT-TPA-TPE3 has a good hole-transporting ability.

Original languageEnglish
Pages (from-to)13091-13098
Number of pages8
JournalChemistrySelect
Volume5
Issue number42
DOIs
Publication statusPublished - 13 Nov 2020

Bibliographical note

Publisher Copyright:
© 2020 Wiley-VCH GmbH

Funding

. We thank Higher Education Council of Turkey (YOK) and TUBITAK grants to Recep Isci (PhD, 100/2000 YOK and 2211A BIDEP/TUBITAK) and Unsped Global Lojistik, Turkey, for financial support. We thank Bariscan Tahaoglu for his help in lab work

FundersFunder number
Higher Education Council of Turkey
YOK2211A BIDEP/TUBITAK

    Keywords

    • Bifunctional material
    • Material science
    • Organic electronics
    • Thienothiophenes

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