摘要
为了研究聚苯乙烯系列中不同取代基对发光率的影响,从而发现最好的聚苯乙烯类目标分子,以1,4-二己氧基苯和取代的苯乙腈为原料,经过溴代、醛基化和缩合反应合成了九种共轭二聚体4a～4j,经过IR、1HNMR、13CNMR和MS确定了这些化合物的结构后,通过荧光光谱测定了它们的发光效率.研究表明:在苯乙腈的邻位引入取代基可以改变共轭电子层密度或产生空间位阻扭曲共轭平面,从而改变电发光性能.
In order to study the effect of various kinds of function groups for fluorescent characteristic in phenylenevinylene best target molecules in the oligo(phenylenevinylene)system were found out. Nine derivatives of conjugated p-phenylenevinylene dimmer 4a～j had been synthesized from 1,4-bis(2-ethylhexyloxy)benzene and substituted benzyl cyanide via brominating, aldehydo-substitution and condensation. The structure was characterized by IR、1H NMR、13C NMR and MS spectral. The ultraviolet absorption and the fluorescent efficiency had been measured. The study showed that the conjugate electron density could be changed or produce space-hinder twist the conjugate plane which changed the fluorescent behavior by introducing the substituted groups in ortho-position of benzyl cyanide.
出处
《宁夏工程技术》
CAS
2005年第2期132-135,共4页
Ningxia Engineering Technology
基金
科技部863计划博士基金资助项目(2003AA2Z3534).
关键词
共轭二聚体
合成
荧光特性
conjugated dimmer
synthesis
fluorescent characteristic
