Visible light response supramolecular gel and preparation method thereof
A supramolecular gel, visible light technology, applied in gel preparation, chemical instruments and methods, colloid chemistry, etc., can solve the problems of less driving force, insufficient health and environmental protection, etc., to increase the possibility, widen the range of options, low energy effect
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[0042] The present invention also provides a method for preparing the above-mentioned visible light-responsive supramolecular gel, comprising the following steps:
[0043] (1) dissolving the above-mentioned halogen bond acceptor and halogen bond donor in a solvent, stirring and mixing evenly, and then removing the solvent to obtain a dried gel factor;
[0044] (2) mixing the gel factor obtained in step (1) with an organic solvent, then raising the temperature to completely dissolve the gel factor, thereby obtaining a clear solution;
[0045] (3) cooling the clear solution prepared in step (2) to prepare the supramolecular gel.
[0046] The solvent described in step (1) is used to dissolve the halogen bond acceptor and the halogen bond donor. In order to ensure that the two are mixed evenly according to a certain ratio, first dissolve it in the solvent to achieve good dispersion in the solvent, and then remove the Solvent to obtain dry gel factor. The solvent here is a low-bo...
Embodiment 1
[0052] A visible light responsive supramolecular gel, the critical gel concentration is 1wt%, including 1wt% gel factor and 99wt% methanol; the supramolecular gel has a wavelength of 700nm and a light intensity of 1mW / cm 2 After 300min of visible light irradiation, a gel-sol phase transition occurs, and then with a wavelength of 400nm and a light intensity of 1mW / cm 2 After 300 min of visible light irradiation, the sol changed into a gel again.
[0053] Among them, the structures of the two components of the halogen bond acceptor and the halogen bond donor in gelatin are respectively:
[0054]
[0055] The preparation method of the supramolecular gel is as follows:
[0056] (1) Halogen bond acceptor with halogen bond donor Dissolve in ethyl acetate according to the molar ratio of 1:3, stir and mix evenly, then remove the ethyl acetate in a blast drying oven to obtain a dried gel factor;
[0057] (2) Add 0.01 g of the above-mentioned gelling factor and 0.99 g of methan...
Embodiment 2
[0059] A visible light responsive supramolecular gel, the critical gel concentration is 10wt%, including 10wt% gel factor and 90wt% tetrahydrofuran; the supramolecular gel has a wavelength of 650nm and a light intensity of 10mW / cm 2 After 400min of visible light irradiation, a gel-sol phase transition occurs, and then with a wavelength of 450nm and a light intensity of 10mW / cm 2 After 400 min of visible light irradiation, the sol changed into a gel again.
[0060] Among them, the structures of the two components of the halogen bond acceptor and the halogen bond donor in gelatin are respectively:
[0061]
[0062] The preparation method of the supramolecular gel is as follows:
[0063] (1) Halogen bond acceptor with halogen bond donor Dissolve in dichloromethane according to a molar ratio of 3:1, stir and mix evenly, then remove the dichloromethane in a blast drying oven to obtain a dried gel factor;
[0064] (2) Add 0.1 g of the above-mentioned gelling factor and 0.9 ...
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