The electrochemical deposition method has been used as an appropriate tool for preparing ultrathin films of fluorene-based polymers for applications in electroluminescent devices. Thus, for the first time, electropolymerization by consecutive multisweep cyclic voltammetry (CV) of 4,4′-(9-fluorenylidene)-dianiline (FDA) in dichloromethane solution containing 0.1 M tetrabutylammonium hexafluorophosphate as supporting electrolyte on an indium tin oxide (ITO)-coated glass slides is reported. To modulate the structure of the resulting polymer films and to better understand the mechanism of the electrogrowth process, the electropolymerization process was carried out in two potential domains, 0–1.3 V and 0–2 V. The changes in the courses of the electropolymerization waves in the two ranges are discussed and compared. FTIR spectroscopy was employed to solve problems concerning the monomer linkage in the polymer films obtained under the two different conditions. The properties of the obtained layers were evaluated in terms of structure morphology, optical properties, and electrochemical behavior. Different morphologies were found for these smooth and very thin films that prove to have the ability for blue light-emission and hole-injection and transport (p-doping). An electropolymerization mechanism similar to that of polyaniline is proposed and discussed on the basis of the obtained experimental data.

中文翻译：

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通过4,4'-（9-芴基）-二苯胺电聚合获得的芴基聚合物薄膜的结构-性质关系

电化学沉积方法已被用作制备用于电致发光器件的芴基聚合物超薄膜的合适工具。因此，首次通过连续多扫描循环伏安法（CV）对4,4'-（9-芴基）-二苯胺进行电聚合（FDA报道了在涂有氧化铟锡（ITO）的载玻片上含有0.1 M六氟磷酸四丁基铵作为支持电解质的二氯甲烷溶液中）。为了调节所得聚合物膜的结构并更好地了解电增长过程的机理，在两个电位域（0-1.3 V和0-2 V）中进行了电聚合过程。电聚合波的变化对两个范围内的值进行了讨论和比较。FTIR光谱法用于解决关于在两种不同条件下获得的聚合物膜中的单体键合的问题。根据结构形态，光学性质和电化学行为评估获得的层的性质。对于这些光滑且非常薄的薄膜，发现了不同的形貌，证明它们具有发射蓝光以及空穴注入和传输（p掺杂）的能力。在获得的实验数据的基础上，提出并讨论了一种与聚苯胺相似的电聚合机理。