標題: Poly(2,3-diphenylphenylene vinylene) derivatives having liquid crystalline side groups
作者: Li, AK
Yang, SS
Jean, WY
Hsu, CS
Hsieh, BR
應用化學系
Department of Applied Chemistry
公開日期: 1-Sep-2000
摘要: Poly(2,3-diphenylphenylene vinylene) (DP-PPV) derivatives with pendant mesogene groups were synthesized. A biphenyoxyl or cyclohexylphenoxy moiety serves as the rigid mesogen core, a methylene chain as the spacer, and a alkyl or alkoxy group as the flexible terminal group. The optical properties of the polymers were investigated by UV-vis and photoluminescent spectroscopies. The polymer films emitted green-blue photoluminescence and electroluminescence. The phase transition behaviors of the polymers were characterized by a polarized optical microscope and a differential scanning calorimeter. The monomers did not show mesophases, while the polymers exhibited a nematic phase around 170-190 degrees C. The aligned films exhibited dichroism in absorption and emission spectra, implying that the polymers have potential for linearly polarized LED application.
URI: http://dx.doi.org/10.1021/cm000295f
http://hdl.handle.net/11536/30294
ISSN: 0897-4756
DOI: 10.1021/cm000295f
期刊: CHEMISTRY OF MATERIALS
Volume: 12
Issue: 9
起始頁: 2741
結束頁: 2744
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