摘要
利用Suzuki偶联反应合成了一种新型聚芴类导电聚合物发光材料：聚9,9二十二烷基芴并3,3′二对偏二氰乙烯基苯基2,7联噻吩（PFC12Th-DCN），表征了该材料的紫外可见吸收光谱、光致发光光谱以及激发光谱。此材料在300-450 nm有很强的吸收，吸收峰位于375 nm。用375 nm的光激发PFC12Th-DCN，其光致发光峰位于625 nm，是一种橙黄色发光材料。制备了结构为ITO/PEDOTPSS/ PFC12Th-DCN/Al的有机电致发光器件。该器件启亮电压为5 V，发光峰为649 nm，色坐标为（0.62, 0.36）。与光致发光光谱相比，该材料的电致发光光谱出现了约25 nm的红移，根据退火实验推断该红移是由PFC12Th-DCN分子聚集态发光引起的。
A novel conductive polymer poly{2,7-（9,9-didodecyl-fluorene）-alt-[3,3′-p-di（dicyanide-vinylidene-phenyl）-bithiophene]}（PFC12Th-DCN） is synthesized by Suzuki cross-coupling reaction. The photoluminescence （PL） spectra, ultraviolet-visible absorption spectra and excited spectra of PFC12Th-DCN thin films are investigated in detail. The experimental results show that the conductive polymer has strong absorption from 300 nm to 450 nm and an absorption peak at 375 nm. Excited by 375 nm light, the PL spectrum of PFC12Th-DCN has a peak emission at about 625 nm, showing that it is an orange-yellow luminescent material. The electroluminescence （EL） device： ITO/PEDOTPSS/PFC12Th-DCN/Al is prepared. The turn-on voltage of the device is 5 V. The peak emission wavelength is about 649 nm and the chromaticity coordinate locates at （0.62, 0.36）. Compared with its PL spectrum, the EL spectrum shows a red shift of about 25 nm. Based on the experimental results, the emission red shift is attributed to the PFC12Th-DCN molecules aggregation induced emission.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2013年第8期165-169,共5页
Acta Optica Sinica
基金
国家973计划(2010CB327704)
北京市自然科学基金(2122050)
高等学校基本科研业务费(2013JBZ004)
关键词
材料
吸收光谱
发光光谱
聚合物发光二极管
聚芴
materials
absorption spectrum
luminescence spectrum
polymer light-emitting diode
polyfluorene
