In the present study, we investigated the effect of permodified 2,3,6-tri-O-trimethylsilyl β- and γ-cyclodextrin (TMS·β-CD, TMS·γ-CD) encapsulation on the optical, electrochemical, morphological, and supramolecular arrangements of a poly[2,7′-(9,9-dioctylfluorene-alt-2′,7-fluorene)] PF copolymer. For this purpose, the photophysical properties and Langmuir monolayer formation of PF·TMS·β-CD and PF·TMS·γ-CD polyrotaxanes were investigated and compared with those of the reference PF. Surface pressure–area isotherms and Brewster angle microscopy studies indicated the capability of both polyrotaxanes to organize into larger and homogeneous 2D supramolecular assemblies at the air–water interface. The obtained results suggest that the presence of the surrounding TMS·β-CD and TMS·γ-CD macrocycles on the PF backbones leads to changes in the conformation and hydrophobicity of the film surfaces. Our investigation offers a method to assess the impact of TMS-CD encapsulation on the control of 2D monolayer formation, with particular attention on the generation of stable PF monolayers for organic electronic devices.

中文翻译：

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聚芴/全改性环糊精聚轮烷的合成、光物理和朗缪尔薄膜

在本研究中，我们研究了过修饰的 2,3,6-三-O-三甲基甲硅烷基 β- 和 γ-环糊精（TMS·β-CD，TMS·γ-CD）封装对光学、电化学、形态、和聚[2,7'-(9,9-二辛基芴-alt -2',7-芴)] PF共聚物的超分子排列。为此，研究了PF·TMS·β-CD和PF·TMS·γ-CD聚轮烷的光物理性质和Langmuir单层形成，并与参考PF的光物理性质和Langmuir单层形成进行了研究。. 表面压力-面积等温线和布鲁斯特角显微镜研究表明，两种聚轮烷都能在气水界面组织成更大且均匀的二维超分子组装体。所得结果表明，PF骨架上周围TMS·β-CD和TMS·γ-CD大环的存在导致薄膜表面的构象和疏水性发生变化。我们的研究提供了一种评估 TMS-CD 封装对 2D 单层形成控制的影响的方法，特别关注为有机电子器件生成稳定的PF单层。