应用化学 ›› 2021, Vol. 38 ›› Issue (10): 1362-1370.DOI: 10.19894/j.issn.1000-0518.210356

• 研究论文 • 上一篇    下一篇

基于偶氮苯-4,4'-二羧酸衍生物的水相超分子自组装

李孟微1(), 王红言1, 王莹莹1, 康晓颖1, 刘美芳2(), 陈于蓝1   

  1. 1天津大学分子+研究院,天津市分子光电科学重点实验室,天津 300354
    2潍坊学院化学化工与环境工程学院,潍坊 261061
  • 收稿日期:2021-07-21 接受日期:2021-08-31 出版日期:2021-10-01 发布日期:2021-10-15
  • 通讯作者: 李孟微,刘美芳
  • 基金资助:
    国家重点研发计划(2017YFA0204503);国家自然科学基金(51903187);中国博士后科学基金(2020 M670642)

Supramolecular Self⁃Assembly of Azobenzene⁃4,4'⁃dicarboxylic Acid Derivatives in Water

Meng-Wei LI1(), Hong-Yan WANG1, Ying-Ying WANG1, Xiao-Ying KANG1, Mei-Fang LIU2(), Yu-Lan CHEN1   

  1. 1Tianjin Key Laboratory of Molecular Optoelectronic Science,Institute of Molecular Plus,Tianjin University,Tianjin 300354,China
    2College of Chemistry-Chemical & Environmental Engineering,Weifang University,Weifang 261061,China
  • Received:2021-07-21 Accepted:2021-08-31 Published:2021-10-01 Online:2021-10-15
  • Contact: Meng-Wei LI,Mei-Fang LIU
  • About author:liumf@iccas.ac.cn; lmw@tju.edu.cn
  • Supported by:
    National Key Research and Development Program of China(2017YFA0204503);the National Natural Science Foundation of China(51903187);the China Postdoctoral Science Foundation(2020M670642)

摘要:

设计合成了两种含偶氮苯的羧酸盐(Azo-2COONaAzo-2TBA)和一种含四苯基甲烷的甲脒盐酸盐(TPM-4Cl)。在氢键作用和静电作用的驱动下,两种羧酸盐均可与TPM-4Cl在水相发生自组装,形成具有高稳定性和高长径比的针状晶体。在该类基于羧酸-脒的超分子结构中,脒阳离子TPM4+和羧酸根阴离子Azo2-的结合比(nTPM4+)∶nAzo2-) = 1∶2)可以通过傅里叶变换红外(FT-IR)光谱和核磁共振(NMR)波谱得以证实。此外,组装体的可逆形成与解组装可以通过改变水溶液的酸碱环境进行调控。因此,这一工作不仅提供了一种简单、绿色、高效的方法构筑三维超分子有序结构,也有望推动该类组装体在客体分子(如药物分子)的选择性包裹与释放方面的应用。

关键词: 自组装, 偶氮苯, 酸响应, 氢键作用

Abstract:

Two azobenzene-based carboxylates (Azo-2TBA Azo-2COONa) and a tetrapenylmethane-containing tetra-amidinium (TPM-4Cl) were designed and synthesized. Both the two carboxylates could assemble with TPM-4Cl in aqueous media through hydrogen bonding and electrostatic interaction, resulting needle-like crystals with high stability and high aspect ratio. The supramolecular structures constituted of tetra-amidinium (TPM4+) and carboxylates (Azo2-) in a molar ratio of 1∶2 were confirmed by Fourier transform infrared(FT-IR) and nuclear magnetic resonance (NMR) analysis. Additionally, it was found that the self-assembly and disassembly of assemblies could be regulated by acid or base triggers. This work not only provides a simple, green and efficient approach to construct three-dimensional ordered supramolecular structures, but also facilitates their applications in selective encapsulation and release of guests, such as small molecule drugs.

Key words: Self-assembly, Azobenzene, Acid-response, Hydrogen bonding interactions

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