导电聚合物有序超薄膜成膜性能的研究

Study on film-forming property of ordered conducting polymer ultrathin film

采用LB膜诱导沉积法制备PEDOT高度有序导电聚合物薄膜,采用的工艺是将十八胺(ODA)与聚3,4-乙烯二氧噻吩/聚苯乙烯磺酸(PEDOT-PSS)先形成ODA包裹PEDOT-PSS纳米粒子的组装体,然后再将其铺展于气/液界面,制备PEDOT-PSS复合LB膜。实验表明,PEDOT-PSS纳米粒子对单分子层具有包裹作用,形成了稳定的复合单分子膜;不同膜压下制备的膜表面形貌不同,较高膜压下得到颗粒紧密排列的薄膜,亚相温度23℃、PEDOT-PSS浓度1×10-3mol/L、压缩速率5mm/min、拉膜速率为1mm/min的条件下薄膜具有较好的成膜性能。

A langmuir-blodgett（LB）inducing method was firstly used to prepare single layer and multilayer conducting composite PEDOT-PSS film.The film-forming ability of ionization ODA and ODA-SA monolayer spread on PEDOT-PSS nanoparticles subphase and the behavior of ODA/PEDOT-PSS assembly particles on pure water were firstly investigated.The results indicate that nanoparticles in subphase pack the ionization monolayer and stable complex Langmuir film was formed at air/water interface.It has been found that the best film-forming conditions for composite film were as follows：molar ration of ODA to SA was 2∶1,suphase temperature was 23centigrade,concentration of PEDOT-PSS in subphse was about 1×10-3 mol/L,compressing speed and deposition speed were 5and 1mm/min respectively.The SIMS and XRR investigation showed that this film exhibited well ordered layer structure.