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 language | English |
|---|---|
| Pages (from-to) | 13091-13098 |
| Number of pages | 8 |
| Journal | ChemistrySelect |
| Volume | 5 |
| Issue number | 42 |
| DOIs | |
| Publication status | Published - 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
| Funders | Funder number |
|---|---|
| Higher Education Council of Turkey | |
| YOK | 2211A BIDEP/TUBITAK |
Keywords
- Bifunctional material
- Material science
- Organic electronics
- Thienothiophenes