期刊
MACROMOLECULAR CHEMISTRY AND PHYSICS
卷 215, 期 11, 页码 1060-1067出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201400070
关键词
fluorenone; polyfluorene; polymer light-emitting devices (PLEDs); white light
资金
- Ministry of Education of China [NCET-13-0927]
- International Science & Technology Cooperation Program of China [2012DFR50460]
- National Natural Science Foundation of China [21101111, 61274056, 61205179, 61307030, 61307029]
- Shanxi Provincial Key Innovative Research Team in Science and Technology [2012041011]
- National Basic Research Program of China (973 Project) [2013CB834702]
- Hong Kong Baptist University [FRG2/12-13/083]
- Hong Kong Research Grants Council [HKBU203313, HKUST2/CRF/10]
- University Grants Committee of HKSAR [AoE/P-03/08]
- Minzu University of China [CUN985-07-08, B08044]
A novel type of single white-light-emitting copolymers, PF-DTFO x, derived from poly(9,9-dioctylfluorene) (PF) in which 2,7-di-(2-thienyl)-9-fluorenone (DTFO) is introduced as an orangeemitting unit, is reported, and their application in white-light polymer light-emitting devices (PLEDs) is explored. Because of the very simple structure of DTFO, the synthetic routes to PFDTFO x are not complicated, and the raw materials are cheap; these are advantageous in reducing the fabrication cost of white-light PLEDs. In the fluorescence spectra, PF-DTFO x in solid powder shows dual peaks at around 460 and 560 nm. In white-light PLEDs, the color of the white-light emission is tunable; this can be achieved by changing the content of DTFO in PF-DTFO x. The light-emission color varies from bluewhite to pure white and orange-white when the composition of DTFO increases. All the PLEDs based on PF-DTFO x exhibit maximum luminance above 1800 cd m(-2) and a color rendering index above 80.
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