Abstract
A polyoxometalate (POM)-cholic acid hybrid was prepared by grafting cholic acid moieties on two sides of the POM cluster. The self-assembly behaviors developed by POM-cholic acid hybrid molecules in a methanol/toluene mixed solution were studied to improve the control of molecular architectures. Under the control conditions, nanoparticles and vesicles in solution systems were formed using simple experimental manipulation. The nanoparticles were prepared with hybrid molecules using ultrasonic manipulation, while the vesicles were formed through aging manipulation. More specifically, these different morphologies were thoroughly studied by transmission electron microscopy (TEM), atomic force microscopy (AFM), Fourier-transform infrared (FTIR), and X-ray diffraction (XRD) analyses. The results revealed that the self-assembly behaviors of hybrid molecules can be readily regulated through simple experimental manipulations. Additionally, we also propose the mechanisms of formation of nanoparticles and vesicles. This work may provide a smart approach to the effective design and fabrication of multifunctional supramolecular materials with adjustable structural architectures.
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We greatly appreciate the financial support of the National Natural Science Foundation of China for grants 21802127 and 21602209, the Science Foundation of North University of China (No. XJJ2016015), and the Shanxi Provincial Foundation for Science and Technology Research (No. 201701D221090).
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Yang, H., Yang, K. & Zhang, Z. Self-assembly of polyoxometalate-based hybrid molecules into nanoparticles or vesicles regulated by simple experimental manipulation. Colloid Polym Sci 297, 957–965 (2019). https://doi.org/10.1007/s00396-019-04520-7
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DOI: https://doi.org/10.1007/s00396-019-04520-7