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Stable Organic Blue-Light-Emitting Devices Prepared from Poly[spiro(fluorene-9,9‘-xanthene)]
| Content Provider | Semantic Scholar |
|---|---|
| Author | Tseng, Ya-Hsien Shih, Ping-I Chien, Chen-Han Dixit, Ajay Kumar Shu, Ching-Fong Liu, Yi-Hung Lee, Gene-Hsiang |
| Copyright Year | 2005 |
| Abstract | A short, efficient synthetic route has been developed for the preparation of 2,7-dibromospiro[fluorene-9,9'-(2',7'-di-n-octyloxyxanthene)], which was subsequently polymerized with the corresponding diborolane through Suzuki coupling to afford a fluorene-based homopolymer, PSFX, that contains a spiroxanthene group functionalized on the C-9 position of each fluorene repeat unit. Single-crystal X-ray diffraction analysis of the dibromo monomer revealed that the spiro-fused fluorene and xanthene moieties lie perpendicular to one another. As a consequence of the incorporation of the spiro pendant group, PSFX possesses a high glass transition temperature and good thermal stability while displaying its stable blue emission in the solid state. A light-emitting diode device prepared using PSFX as the emitting layer exhibits an efficient, stable blue emission; it has a turn-on voltage of 6 V and a maximum external quantum efficiency of 1.74% ph/el. Even when the brightness was increased up to 103 cd/m2 (ca. 11 V), . |
| Starting Page | 10055 |
| Ending Page | 10060 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| DOI | 10.1021/ma051798f |
| Volume Number | 38 |
| Alternate Webpage(s) | https://ir.nctu.edu.tw/bitstream/11536/13052/1/000233524900023.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
