Antitumor application of covalent organic framework material
A covalent organic framework and tumor technology, which is applied in the field of tumor treatment, can solve the problems of decreased ROS production capacity, inability to direct intravenous injection, and decreased ROS capacity, and achieve the effects of enhancing ROS capacity, prolonging life, and increasing exposure
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[0105] Example 1
[0106] Preparation of covalent organic framework materials with heterogeneous structure
[0107] (1) Under anhydrous and oxygen-free conditions, the donor (2,3,6,7,10,11-hexahydroxytriphenyl, 2 equivalents) and the acceptor (5,15-Bis(4-boronophenyl)porphyrin, 3 equivalents) in acetonitrile / mesitylene (7:3), the reaction temperature is 80-150°C, and the reaction time is 2-5 days. The obtained solid product is washed with toluene until the liquid is colorless. The solvent is removed by heating under vacuum, the temperature is 80~120℃, and the time is 12~48h.
[0108] (2) Add the obtained solid powder (3-6 mg) to water, PBS, and serum (6 mL) to ultrasonically disperse to obtain a nano-sized covalent organic nanosheet dispersion (0.5-1 mg / mL).
Example Embodiment
[0109] Example 2
[0110] The covalent organic framework material covalent nanosheets prepared in the embodiment of the present invention were characterized.
[0111] Material particle size and potential measurement
[0112] A PBS-dispersed covalent organic nanosheet dispersion (0.1 mg / mL) was prepared, and then the particle size and potential were measured.
[0113] See figure 1 , figure 1 This is a graph of the particle size distribution and potential of the covalent nanosheet with a heterogeneous structure prepared in Example 1 of the present invention.
[0114] Such as figure 1 As shown, the covalent nanosheet with heterogeneous structure has a particle size of about 350 nm and a potential of -37 mV, which is beneficial to realize intravenous injection of the nanosheet.
[0115] See figure 2 , figure 2 This is an electron micrograph of the covalent nanosheet with heterogeneous structure prepared in Example 1 of the present invention.
Example Embodiment
[0116] Example 3
[0117] The photodynamic performance of the covalent organic framework material covalent nanosheet material prepared in the embodiment of the present invention was evaluated.
[0118] Use 1,3-Diphenylisobenzofuran (DPBF) to detect the production of ROS, DPBF (50μL, 1mM)
[0119] Add to the covalent organic nanosheet dispersion (3mL, 0.1mg / mL), using a laser (1W cm -2 ,635nm) radiate the mixed solution, and monitor the change of DPBF absorption by UV absorption.
[0120] See image 3 , image 3 This is the photodynamic evaluation of the material level of the covalent organic nanosheets prepared in the examples of the present invention. That is, under light conditions, the DPBF absorption intensity varies with the irradiation time.
[0121] by image 3 It can be seen that it proves the generation of ROS.
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