氢键作用构建含硅嵌段共聚物超分子复合物及其自组装行为研究

费志雄; 翁琳; 廖芬; 石玲英

doi:10.11777/j.issn1000-3304.2023.23075

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氢键作用构建含硅嵌段共聚物超分子复合物及其自组装行为研究

研究论文 | 更新时间：2023-09-25

- 氢键作用构建含硅嵌段共聚物超分子复合物及其自组装行为研究
- Self-assembly of Supramolecular Silicon-containing Block Copolymers Based on Hydrogen Bonding Interaction
- 高分子学报 2023年54卷第10期页码：1547-1554
- 作者机构：
  
  四川大学高分子科学与工程学院成都 610065
- 作者简介：
  
  E-mail: shilingying@scu.edu.cn
- 基金信息：
  
  国家自然科学基金(基金号 52273024)
- DOI：10.11777/j.issn1000-3304.2023.23075
  中图分类号：
- 纸质出版日期：2023-10-20，
  
  网络出版日期：2023-07-11，
  
  收稿日期：2023-03-27，
  
  录用日期：2023-06-02
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费志雄,翁琳,廖芬等.氢键作用构建含硅嵌段共聚物超分子复合物及其自组装行为研究[J].高分子学报,2023,54(10):1547-1554.

Fei Zhi-xiong,Weng Lin,Liao Fen,et al.Self-assembly of Supramolecular Silicon-containing Block Copolymers Based on Hydrogen Bonding Interaction[J].ACTA POLYMERICA SINICA,2023,54(10):1547-1554.
费志雄,翁琳,廖芬等.氢键作用构建含硅嵌段共聚物超分子复合物及其自组装行为研究[J].高分子学报,2023,54(10):1547-1554. DOI： 10.11777/j.issn1000-3304.2023.23075.

Fei Zhi-xiong,Weng Lin,Liao Fen,et al.Self-assembly of Supramolecular Silicon-containing Block Copolymers Based on Hydrogen Bonding Interaction[J].ACTA POLYMERICA SINICA,2023,54(10):1547-1554. DOI： 10.11777/j.issn1000-3304.2023.23075.

摘要

通过聚二甲基硅氧烷-

-聚(2-乙烯基吡啶) (PDMS-

-P2VP

DV)与4-羟基偶氮苯(Azo)之间的氢键相互作用，构建了具有光响应的含硅嵌段共聚物(DV(Azo)

)超分子复合体系，研究了该复合体系的自组装行为. 利用溶液共混法制备了具有不同4-羟基偶氮苯含量的超分子嵌段共聚物. 通过傅里叶红外光谱(FTIR)、示差扫描量热仪(DSC)、小角X射线散射(SAXS)和透射电镜(TEM)等研究了小分子与共聚物之间的相互作用以及小分子含量对该复合体系自组装结构的影响规律. 实验结果表明4-羟基偶氮苯与PDMS-

-P2VP中吡啶基团之间能有效形成氢键. Azo的加入会降低P2VP的玻璃化转变温度，提高P2VP嵌段的体积分数，从而导致复合物自组装结构发生层状到六方柱状再到体心立方结构的转变. 而当Azo摩尔比

0.5时，Azo自身聚集比较严重，相分离结构变得无序. 后续研究将关注偶氮苯分子构象变化调控薄膜态自组装结构取向行为.

Abstract

The self-assembly behavior of the supramolecular complex system of polydimethylsiloxane-

-poly(2-vinylpyridine) (PDMS-

-P2VP

DV) and 4-hydroxyazobenzene (Azo) based on hydrogen bonding interaction was investigated. Supramolecular block copolymer was prepared by solution blending method. The interaction between Azo molecules and PDMS-

-P2VP and the effect of Azo molecules content on the self-assembly behavior of the system were investigated by Fourier transform infrared (FTIR) spectroscopy

differential scanning calorimetry (DSC)

small angle X-ray scattering (SAXS) and transmission electron microscopy (TEM). The results demonstrate that Azo can effectively form hydrogen bond with pyridine group in PDMS-

-P2VP. The glass transition temperature of P2VP block decreased with the increase of the molar ratio (

) of Azo/2VP. With

value changed from 0 to 0.5

the supramolecular block copolymers presented lamellae (LAM)

hexagonally packed cylinder (HEX)

and body centered cubic (BCC) structures. However

when

is higher than 0.5

the self-aggregation of Azo occurred and the phase-separated nanostructure becomes disordered. Our future work will focus on the light-responsive structure regulation of these supramolecular block copolymers.

关键词

聚二甲基硅氧烷聚(2-乙烯基吡啶)氢键自组装超分子嵌段共聚物

Keywords

PolydimethylsiloxanePoly(2-vinylpyridine)Hydrogen bondSelf-assemblySupramolecular block copolymer

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