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12 January 2005 Novel efficient blue light-emitting conjugated polymers: synthesis, optical properties, and thermal optical stability
Xiao-Yu Cao, Hong Zi, Hua Lu, Jian Pei
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Proceedings Volume 5632, Light-Emitting Diode Materials and Devices; (2005) https://doi.org/10.1117/12.593238
Event: Photonics Asia, 2004, Beijing, China
Abstract
A series of blue light-emitting copolymers containing alternative dialkoxy-substituted phenylene group and the fluorene moiety with different functional groups at the C-9 bridge position have been prepared through the Suzuki polymerization in this contribution. The detailed investigation of the optical properties demonstrates that the spectral thermal and optical stability of P1-3 exhibit substantially enhanced resistance to both thermally and optically oxidation by the backbone modification strategy. Moreover, in comparison with P1 and P3, P2 with the spiro-junction shows much higher Tg and significantly improves resistance towards oxidation in the air, indicating that the spiro-junction is a better strategy to prevent the formation of ketonic defects or the migration of the exicitons to these defect sites. These properties have established our desired polymers as a family of promising candidate for optoelectronic applications.
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Xiao-Yu Cao, Hong Zi, Hua Lu, and Jian Pei "Novel efficient blue light-emitting conjugated polymers: synthesis, optical properties, and thermal optical stability", Proc. SPIE 5632, Light-Emitting Diode Materials and Devices, (12 January 2005); https://doi.org/10.1117/12.593238
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KEYWORDS
Polymers
Annealing
Thermography
Optical properties
Bridges
Bromine
Ultraviolet radiation
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