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  • CN 31-1691/TQ

光响应小分子/表面活性剂自组装体的宏观光响应行为

帅洁 胡佳杰 涂燕 尚亚卓 刘洪来

帅洁, 胡佳杰, 涂燕, 尚亚卓, 刘洪来. 光响应小分子/表面活性剂自组装体的宏观光响应行为[J]. 华东理工大学学报(自然科学版), 2020, 46(5): 653-664. doi: 10.14135/j.cnki.1006-3080.20190821001
引用本文: 帅洁, 胡佳杰, 涂燕, 尚亚卓, 刘洪来. 光响应小分子/表面活性剂自组装体的宏观光响应行为[J]. 华东理工大学学报(自然科学版), 2020, 46(5): 653-664. doi: 10.14135/j.cnki.1006-3080.20190821001
SHUAI Jie, HU Jiajie, TU Yan, SHANG Yazhuo, LIU Honglai. Macroscopic Photo-Responsive Behaviors of Self-assemblies Constructed by Photo-Responsive Small Molecules and Surfactants[J]. Journal of East China University of Science and Technology, 2020, 46(5): 653-664. doi: 10.14135/j.cnki.1006-3080.20190821001
Citation: SHUAI Jie, HU Jiajie, TU Yan, SHANG Yazhuo, LIU Honglai. Macroscopic Photo-Responsive Behaviors of Self-assemblies Constructed by Photo-Responsive Small Molecules and Surfactants[J]. Journal of East China University of Science and Technology, 2020, 46(5): 653-664. doi: 10.14135/j.cnki.1006-3080.20190821001

光响应小分子/表面活性剂自组装体的宏观光响应行为

doi: 10.14135/j.cnki.1006-3080.20190821001
基金项目: 国家自然科学基金(21476072)
详细信息
    作者简介:

    帅洁(1994-),女,硕士生,主要研究方向为界面胶体化学

    通讯作者:

    尚亚卓,E-mail:shangyazhuo@ecust.edu.cn

  • 中图分类号: O647

Macroscopic Photo-Responsive Behaviors of Self-assemblies Constructed by Photo-Responsive Small Molecules and Surfactants

  • 摘要: 采用离子交换法,合成了一种无卤素的离子液体表面活性剂1-丁基-3甲基咪唑十二烷基硫酸酯([C4mim][C12SO4]),并将其与偶联表面活性剂Gemini12-3-12复配,同时引入光响应小分子反式-2-甲氧基肉桂酸(trans-OMCA),构建Gemini12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O光响应体系,采用透射电镜、紫外-可见光谱和动态光散射等方法系统研究了复配体系中双水相体系及其相邻的单相囊泡体系和各向异性体系的紫外光响应行为。结果表明:复配体系具有良好的光响应性,对于球形胶束和蠕虫状胶束共存的双水相体系,一定时长的紫外光照射会促使其融合为单一的蠕虫状胶束相;单相囊泡体系在一定时长的紫外光照射后会分离为球形胶束和蠕虫状胶束共存的双水相体系,延长紫外光照射时间,体系又会逐渐融合为单一的蠕虫状胶束相;对于各向异性体系,一定时长的紫外光照射会使体系变为各向同性相。显然,通过紫外光照射可实现体系宏观相行为的变化,即光致相分离及光致相混合。

     

  • 图  1  trans-OMCA(a)、cis-OMCA(b)和Gemini12-3-12(c)的化学结构

    Figure  1.  Chemical structures of trans-OMCA(a), cis-OMCA(b) and Gemini12-3-12(c)

    图  2  [C4mim][C12SO4]的合成反应

    Figure  2.  Synthesis reaction of [C4mim][C12SO4]

    图  3  [C4mim][C12SO4]的核磁共振氢谱(1H-NMR)

    Figure  3.  1H-NMR spectroscopy of the synthesized [C4mim][C12SO4]

    图  4  表面活性剂总浓度不同时混合体系的紫外-可见吸收光谱

    Figure  4.  UV-vis absorption spectra of mixed systems with different surfactant concentrations

    图  5  Gemini12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O双水相体系经历不同时长紫外光照射后的紫外-可见吸收光谱及光致相混合宏观现象(c=20 mmol/L,ctrans-OMCA=10 mmol/L,R =4)

    Figure  5.  UV-vis absorption spectra of ATPS formed in Gemini12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O system at different UV irradiation time and the photo of induced phase combination (c=20 mmol/L,ctrans-OMCA=10 mmol/L,R =4)

    图  6  Gemini12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O双水相体系的上相粒径分布及微观结构(a),下相微观结构(b),光致相混合体系的微观结构(c)(c=20 mmol/L,R=4,ctrans-OMCA=10 mmol/L)

    Figure  6.  Particle size distribution and microstructure of upper phase in ATPS(a), microstructure of bottom-phase in ATPS(b) and photo induced phase combination system(c) of Gemini12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O system (c=20 mmol/L,R=4,ctrans-OMCA=10 mmol/L)

    图  7  Gemini12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O双水相体系共存两相的紫外-可见吸收光谱(c=20 mmol/L,R=4,ctrans-OMCA=10 mmol/L)

    Figure  7.  UV-vis absorption spectra of upper phase and bottom phase in Gemini12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O ATPS (c=20 mmol/L,R=4,ctrans-OMCA=10 mmol/L)

    图  8  Gemini 12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O体系光响应行为以及混合体系在不同紫外光照时长后的紫外-可见吸收光谱(c=20 mmol/L、R=4、ctrans-OMCA=16 mmol/L)

    Figure  8.  Photo-responsive phase behaviors and UV-vis absorption spectra under different UV irradiation time for the system of Gemini12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O (c=20 mmol/L、R=4、ctrans-OMCA=16 mmol/L)

    图  9  Gemini12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O单相体系光响应行为(上)以及体系经历不同时长紫外光照后的紫外-可见吸收光谱(下)

    Figure  9.  Photo-responsive phase behaviors (up) and UV-vis absorption spectra under different UV irradiation time (down) for the system of Gemini12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O

    Reaction conditions of (a): c=40 mmol/L, R=4, ctrans-OMCA=28 mmol/L; (b): c=60 mmol/L, R=4, ctrans-OMCA=34 mmol/L

    图  10  Gemini12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O体系单相体系(a),光致相分离体系上相(b),光致相分离体系下相(c),光致相混合体系(d)的TEM照片(c=20 mmol/L,R=4,ctrans-OMCA=16 mmol/L)

    Figure  10.  TEM images of single-phase system(a), upper-phase in photo induced phase separation system(b), bottom-phase in photo induced phase separation system(c) and photo induced phase combination system(d) of Gemini12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O system (c=20 mmol/L,R=4,ctrans-OMCA=16 mmol/L)

    图  11  Gemini12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O单相体系(a),光致相分离体系上相(b)的粒径分布图(c=20 mmol/L,R=4,ctrans-OMCA=16 mmol/L)

    Figure  11.  Particle size distribution of single-phase(a) and upper-phase in photo induced phase separation system(b) of Gemini12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O system (c=20 mmol/L,R=4,ctrans-OMCA=16 mmol/L)

    图  12  Gemini12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O各向异性相紫外光照前后的偏光显微镜照片(c=20 mmol/L,R=1.8,ctrans-OMCA=2 mmol/L)

    Figure  12.  Polarizing micrographs of Gemini12-3-12/[C4mim][C12SO4]/trans-OMCA/H2O system (c=20 mmol/L,R=1.8,ctrans-OMCA=2 mmol/L)

    表  1  [C4mim][C12SO4]中C、H、N元素的理论质量分数、实际质量分数及其相对误差

    Table  1.   Theoretical mass fractions, practical mass fractions and relative error of C, H, N in synthesized [C4mim][C12SO4]

    Ionic liquid Theoretical mass fractions/% Practical mass fractions/% Relative error/%
    C H N C H N C H N
    [C4mim][C12SO4] 59.41 9.90 6.93 59.22 10.35 6.86 0.321 4.35 1.02
    下载: 导出CSV

    表  2  表面活性剂总浓度不同时trans-OMCA浓度对体系相行为的影响(R=4)

    Table  2.   Effect of trans-OMCA concentration on system phase behaviors with different surfactant concentrations (R=4)

    c/(mmol·L−1) ctrans-OMCA/(mmol·L–1)
    ATPS Single-phase system
    20 10~16 >16
    40 18~28 >28
    60 20~34 >34
    下载: 导出CSV

    表  3  R不同时trans-OMCA浓度对体系相行为的影响(c=20 mmol/L)

    Table  3.   Effect of trans-OMCA concentration on system phase behaviors with different R (c=20 mmol/L)

    R ctrans-OMCA/(mmol·L–1)
    ATPS Single-phase system
    2 2~8 ≥8
    3 4~12 ≥12
    4 10~16 ≥16
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-08-21
  • 网络出版日期:  2019-10-29
  • 刊出日期:  2020-10-30

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