Self-Assembly of Bispentadecylphenol Substituted Perylenediimide with PS-b-P4VP for Structure–Property Insight into the Core of Core–Shell Micelles,ACS Applied Polymer Materials

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Self-Assembly of Bispentadecylphenol Substituted Perylenediimide with PS-b-P4VP for Structure–Property Insight into the Core of Core–Shell Micelles
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2019-12-31 , DOI: 10.1021/acsapm.9b01099
Moumita Roy ₁ , Pattuparambil R. Rajamohanan , Sapna Ravindranathan , Asha SK ₁

Affiliation

We report the use of a ditopic molecular probe bispentadecylphenol substituted perylenediimide (PBI–PDP) to examine the molecular level self-assembly of polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP) in tetrahydrofuran (THF). A series of complexes were prepared between PS-b-P4VP copolymers with varying lengths of the 4-vinylpyridine chain and PBI–PDP. Light scattering and NMR spectroscopic studies reveal that the self-assembled structures of the solid complexes are not fully disrupted when the complexes are dissolved in THF. NMR experimental parameters measured for the small probe molecule provide detailed insights into the structure of the assemblies in solution as well as the interaction between the small molecule and the block copolymer. Such insights can have important implications in manipulating the nanostructure of block copolymer micelles to suit various application requirements. The dynamics and distribution of the PBI–PDP molecules within the assemblies in solution show a dependence on the length of the P4VP block. Transmission electron microscopy was employed to study the evolution of morphologies in films prepared from the self-assembled structures in THF solutions.

中文翻译：

自十四烷基苯酚取代的ylene二酰亚胺与PS- b -P4VP的自组装，可将结构-性能深入研究核-壳胶束的核心

我们报告了使用对位分子探针双十五烷基酚取代的per二酰亚胺（PBI-PDP）来检查四氢呋喃（THF）中聚苯乙烯-b-聚（4-乙烯基吡啶）（PS- b -P4VP）的分子水平自组装。PS- b之间制备了一系列配合物-P4VP共聚物具有不同长度的4-乙烯基吡啶链和PBI-PDP。光散射和NMR光谱研究表明，当将配合物溶解在THF中时，固体配合物的自组装结构不会完全破坏。为小探针分子测得的NMR实验参数为溶液中组件的结构以及小分子与嵌段共聚物之间的相互作用提供了详细的见识。这些见解在操纵嵌段共聚物胶束的纳米结构以适应各种应用需求方面可能具有重要的意义。溶液中组件中PBI-PDP分子的动力学和分布显示出对P4VP嵌段长度的依赖性。

更新日期：2020-01-01

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