Light-emitting copolymers based on fluorene and selenophene-comparative studies with its sulfur analogue: Poly(fluorene-co-thiophene)
文献类型：期刊论文
| 作者 | Yang, RQ; Tian, RY; Hou, Q; Yong, Z; Li, YF; Wei, Y; Chi, Z; Yong, C |
| 刊名 | JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
 |
| 出版日期 | 2005-02-15 |
| 卷号 | 43期号:4页码:823-836 |
| 关键词 | Light-emitting Diodes Poly(Fluorene-co-selenophene) Poly(Fluorene-co-thiophene) Fluorescence Conjugated Polymers |
| ISSN号 | 0887-624X |
| DOI | 10.1002/pola.20562 |
| 英文摘要 | A series of soluble conjugated copolymers derived from 9.9-dioctylfluorene (FO) and selenophene (SeH) was synthesized by a palladium-catalyzed Suzuki coupling reaction with various feed ratios of SeH to FO less than or equal to 50%. The efficient energy transfer from fluorene segments to narrow band-gap selenophene sites was observed. In comparison with the very well studied copolymer poly(fluorene-co-thiophene), poly(9,9-dioctylfluorene-co-selenophene) (PFO-SeH) shows redshifted photoluminescence (PL) and electroluminescence (EL) emission. PL spectra of the PFO-SeH copolymers show a significant redshift along with increasing selenophene content in the copolymers and also with increasing polymer concentration in solution. PL quantum efficiency, of the selenophene-containing PFO copolymer is much lower than that of corresponding PFO-thiophene (Th) copolymers. All these features of PFO-SeH copolymers ran be explained by the difference in aromaticity of selenophene and thiophene heterocycles and the heavy, atom effect of Se in comparison with S-atoms. The device fabricated with PFO-SeH15 as the emissive layer exhibited high external quantum efficiency (0.511%) at a luminance of 1570 cd/m(2). Device performance is limited by electron injection and the strong quenching effect of Se atoms. Devices with PFO-SeH copolymers blended into PFO homopolymers show significant improvement in device performance. External quantum efficiency, as high as 1.7% can be obtained for PFO-SeH30/PFO blend devices. (C) 2005 Wiley Periodicals, Inc. |
| 语种 | 英语 |
| WOS记录号 | WOS:000226675100013 |
| 出版者 | JOHN WILEY & SONS INC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/56711]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yong, C |
| 作者单位 | 1.S China Univ Technol, Inst Polymer Optoelect Mat& Devices, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Inst Chem, Lab Organ Solids, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, RQ,Tian, RY,Hou, Q,et al. Light-emitting copolymers based on fluorene and selenophene-comparative studies with its sulfur analogue: Poly(fluorene-co-thiophene)[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2005,43(4):823-836. |
| APA | Yang, RQ.,Tian, RY.,Hou, Q.,Yong, Z.,Li, YF.,...&Yong, C.(2005).Light-emitting copolymers based on fluorene and selenophene-comparative studies with its sulfur analogue: Poly(fluorene-co-thiophene).JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,43(4),823-836. |
| MLA | Yang, RQ,et al."Light-emitting copolymers based on fluorene and selenophene-comparative studies with its sulfur analogue: Poly(fluorene-co-thiophene)".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 43.4(2005):823-836. |
入库方式： OAI收割
来源：化学研究所
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