采用AlCl3-CuCl2催化体系合成了聚对苯撑（PPP）。用离子注入法及化学方法对聚对苯撑进行了掺杂，研究了N+离子注入的剂量、能量、温度以及Fech掺杂的浓度、温度、时间对聚对苯撑表面电导的影响。结果表明。离子注入掺杂可使PPP表面电导提高4～5个数量级，而化学掺杂法可将电导提高到0.1-1cm-1。

采用离子注入掺杂技术，研究了聚对苯（PPP）薄膜的离子束效应。当20～70kev的Ar+和N+注入后，聚对苯薄膜的电导率随着剂量的增加而迅速增加。当剂量为1×1017ions cm2时，电阻率下降7个数量级。FT2R光谱图显示了Ar+注入使聚对苯分子链部分c-c和c-H的R键断裂，从而改善了它的导电性能。通过超高阻测试仪研究了聚对苯薄膜表面电导率与温度的关系，从高分子自由体积理论的角度对离子注入聚对苯薄膜离子注入导电机理进行了研究。

组建了偶氮染料的光致变色测试系统，进而用该系统研究了甲基红（MR）溶液和MR/聚甲基丙烯酸甲酯（PMMA）薄膜的光致异构过程。结果表明：增大激发光的光强与延长激发时间对促进MR分子光致异构具有等效作用，而且MR分子的光致异构过程对周围的空间位阻有很强的依赖性；偶氮分子因光致异构引起的光致变色实质上有光致异构为主的快过程和偶氮分子沿激光偏振方向取向为主的慢过程，取向状态在偶氮染料掺杂聚合物薄膜中可以长时间地保持。

利用低能氮离子对聚[（3一乙酰基吡咯-2，5-二）对二甲氨基苯甲烯]（Papdmabeq）薄膜进行了离子注入改性（注入能量为10～35keV、剂量为1.2×1016～2.2×1017 ions/cm2），研究了与材料三阶非线性极化率相关的物理量的变化规律。结果表明，氮离子注入使Papdmabeq薄膜的光电特性都发生了显著变化。适当能量和剂量的氮离子注入Papdmabeq薄膜后，薄膜中导电岛的数量增加，在聚合物分子链间形成了大的导电区域，导致其电导率显著提高。当注入离子的能量为25keV、剂量为2.2×1017 ions/cm2时，Papdmabeq薄膜的电导率为9.2×10-4s/cm，比本征态Papdmabeq的电导率提高了5个数量级，且离子注入后薄膜电导率的环境稳定性优于经碘掺杂的Papdmabeq。氮离子注入可以使这种聚合物薄膜在可见光范围内的光吸收大幅度提高，使共轭程度得到显著增强。当注入离子的能量为35keV、剂量为2.2×1017ions/cm2时，Papdmabeq的光学禁带宽度（Eg）由1.626eV降低到1.340eV。

A series of poly (heteroarylene methines) containing one pyrrole or thiophene ring alternating with a carbon atom in the main chain were synthesized. The resonant third-order optical nonlinearity at 532nm was studied by using degenerate four-wave mixing (DFWM) techique. The resonant secondorder hyperpolarizabilitiesγ and third2order nonlinear optical susceptibility χ(3) were up to 10-30esu and 1028esu respectively. Poly {pyrrole2[ 2,52diyl (p2N,N2dimethlamino) benzylidene]} (PPDMAB) was chosen to be further studied mainly due to its good solubility and filmforming performance. Time2resolved Optical Kerr effect (OKE) of PPDMAB was investigated with femtosecond laser pulses at 790 nm. Only an ultrafast component of OKE of PPDMAB was observed and its dephasing time was 84.7 fs, which is attributed toπelectron-cloud distortion occurring upon the non-resonant excitation. The off-resonant second-order hyperpolarizabilitiesγ and third-order nonlinear optical susceptibility χ(3) of PPDMAB were also determined by transient OKE. The results show that PPDMAB exhibit large off2resonant nonlinearities γ as large as γ=5.78×10-32esu, for each structural units and χ(3) as large as χ(3)=1.26×10-10esu for the material have been obtained.