CY Cergy Paris Université, F95000 Cergy, France.
"Petru Poni" Institute of Macromolecular Chemistry, 700487 Iasi, Romania.
Langmuir. 2021 Sep 28;37(38):11406-11413. doi: 10.1021/acs.langmuir.1c02014. Epub 2021 Sep 16.
In the present study, we investigated the effect of permodified 2,3,6-tri--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--2',7-fluorene)] copolymer. For this purpose, the photophysical properties and Langmuir monolayer formation of and polyrotaxanes were investigated and compared with those of the reference . 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 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 monolayers for organic electronic devices.
在本研究中，我们研究了修饰后的 2,3,6-三-O-三甲基硅基-β-和 γ-环糊精（TMS·β-CD，TMS·γ-CD）包合对聚[2,7'-(9,9-二辛基芴-2',7-芴)]共聚物光学、电化学、形态和超分子排列的影响。为此，我们研究了 和 聚轮烷的光物理性质和 Langmuir 单分子层形成，并将其与参比 进行了比较。表面压-面积等温线和布鲁斯特角显微镜研究表明，这两种聚轮烷都能够在气-水界面上形成更大、更均匀的 2D 超分子组装体。所得结果表明，在主链上存在周围的 TMS·β-CD 和 TMS·γ-CD 大环会导致膜表面的构象和疏水性发生变化。我们的研究提供了一种方法来评估 TMS-CD 包合对 2D 单层形成控制的影响，特别关注用于有机电子器件的稳定 单层的生成。
