摘要
为了改善聚噻吩甲烯的溶解性,在噻吩的3位引入丁基制备了3-丁基噻吩,并与对硝基苯甲醛聚合,得到了聚(3-丁基噻吩)对硝基苯甲烷(PBTNB),然后在四氯苯醌的作用下进行脱氢反应制得了溶解性和成膜性优良的目标产物聚(3-丁基噻吩)对硝基苯甲烯(PBTNBQ).3-丁基噻吩、PBTNB和PBTNBQ的结构通过红外光谱及核磁共振氢谱得到了确认.PBTNB的红外光谱上1650cm-1处的吸收峰和紫外-可见吸收光谱中300～600nm的吸收峰都说明了PBTNB中存在有一定的醌式成分.热质量分析表明,PBTNBQ可耐220℃的高温.X射线衍射和透射电镜分析表明,PBTNBQ是一种均匀的完全非晶材料.
In order to improve the solubility of poly [(thiophene)methane]s, 3-butylthiophen is synthesized and reacted with p-nitrobenzadehyde to synthesize poly[(3-butylthiophene-2,5-diyl)p-(nitro)-benzylidene](PBTNB). The target product poly[(3-butylthiophene-2,5-diyl)p-(nitro)benzylidenequinodimethane-2,5-diyl](PBTNBQ) is prepared by reacting PBTNB with tetrachlorobenzoquinone. PBTNBQ can readily be solution-processed into films because of the long alky chain (butyl) in the 3-position in thiophene. The infrared spectrum and proton magnetic resonance(~1H NMR) can prove the structures of 3-butylthiophene and PBTNBQ. The absorption peak at 1 650 cm^(-1) in IR spectrum, the enlarged absorption peaks at 300～600 nm in UV-Vis absorption spectrum and the disappearance of 5.7 in ~1H NMR all imply that the quino-structure is really formed in PBTNBQ. The thermal stability by thermal gravity analysis indicates that PBTNBQ is able to endure high temperature at 220 ℃. According to crystallinity by X-ray diffraction and transmission electron microscope, it demonstrates that the PBTNBQ is a kind of homogeneous amorphous material.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2004年第4期432-435,共4页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金资助项目(60277002)
西安交通大学科学研究基金资助项目.
关键词
聚(3-丁基噻吩)对硝基苯甲烯
合成
表征
poly[(3-butylthiophene-2,5-diyl)p-(nitro)benzylidenequinomethane-2,5-diyl]
synthesis
characterization
