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OALib Journal期刊
ISSN: 2333-9721
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SYNTHESIS AND THERMO-STABILITY INVESTIGATION OF BLUE ELECTROLUMINESCENT POLY(9,9''''-DIOCTYLFLUORENE) END-CAPPED WITH HINDERED AMINE LIGHT STABILIZER
一种受阻胺封端的聚芴蓝光材料的合成及其稳定性研究

Keywords: Polyfluorene,Hindered amine light stabilizer,Anti-oxidation,Green-emission
聚芴
,受阻胺,抗氧化,绿光发射

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Abstract:

A novel hindered amine light stabilizer has been synthesized using 1,2,2,6,6-pentamethyl-4-piperidinol and 4-bromobenzoyl chloride as the raw materials,and has been utilized to end-cap the blue electroluminescent poly_(9,9'-dioctylfluorene).The chemical structure of the polymer has been characterized with nuclear magnetic resonance(1H-NMR)and gel permeation chromatograph(GPC).Its thermo-stability was investigated by comparing the fluorescent spectra after annealing at elevated temperature in air.It clearly demonstrated that the light fluorescent spectroscopic stability of the polymer was greatly improved and the common phenomenon of greenish blue emission has been effectively restrained after end-capped with the hindered amine light stabilizer.

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