Back to Search
Start Over
Two novel blue phosphorescent host materials containing phenothiazine-5,5-dioxide structure derivatives
- Source :
- Beilstein Journal of Organic Chemistry, Vol 14, Iss 1, Pp 869-874 (2018)
- Publication Year :
- 2018
- Publisher :
- Beilstein-Institut, 2018.
-
Abstract
- Two novel D–A bipolar blue phosphorescent host materials based on phenothiazine-5,5-dioxide: 3-(9H-carbazol-9-yl)-10-ethyl-10H-phenothiazine-5,5-dioxide (CEPDO) and 10-butyl-3-(9H-carbazol-9-yl)-10H-phenothiazine-5,5-dioxide (CBPDO) were synthesized and characterized. The photophysical, electrochemical and thermal properties were systematically investigated. CEPDO and CBPDO not only have a high triplet energy but also show a bipolar behavior. Moreover, their fluorescence emission peaks are in the blue fluorescence region at 408 nm and the fluorescence quantum efficiency (Φ) of CEPDO and CBPDO were 62.5% and 59.7%, respectively. Both CEPDO and CBPDO showed very high thermal stability with decomposition temperatures (Td) of 409 and 396 °C as well as suitable HOMO and LUMO energy levels. This preferable performance suggests that CEPDO and CBPDO are alternative bipolar host materials for the PhOLEDs.
Details
- Language :
- English
- ISSN :
- 18605397
- Volume :
- 14
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- Beilstein Journal of Organic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.7de98333bee4b109d4e964e66851dd0
- Document Type :
- article
- Full Text :
- https://doi.org/10.3762/bjoc.14.73