6 results about "Ethanedithiol" patented technology

The invention relates to cyclotrithio-tri (2-mercaptoethylthio) mercaptan as shown in a formula I and a preparation method and application thereof. A two-step method of thio reaction and nucleophilic substitution is adopted. In the step I, thiourea is used as a sulfur source, epoxy atoms in trioxymethylene are replaced by sulfur atoms one by one under the condition of strong acid, and 1, 3, 5-trithiacyclohexane is generated. In the nucleophilic reaction of acid catalytic activation in the step II, 1, 3, 5-trithioxane and Lewis acid are subjected to coordination complexation firstly, one sulfydryl in dithiol serves as a nucleophilic reagent to attack an electrophilic carbon center of a ring-opening intermediate, a new C-S bond is formed, and a linear intermediate containing sulfydryl is generated; according to the process, three thiol groups are introduced in sequence step by step, and sulfur alkylation substitution is completed. The obtained product has the characteristics of high purity, high light transmittance and large refractive index, and can be used for preparing optical materials with ultrahigh refractive index and high light transmittance.

The application discloses a kind of synergistic antitumor porphyrin-based covalent organic framework heterojunction materials and preparation method thereof, belong to biological medicine technical field. 5,10,15,20-tetra (4-aminobenzene) -21H,23H-porphyrin and 2,5-divinyl benzene formaldehyde are added to organic solvent to carry out solvothermal reaction, and porphyrin-based covalent organic framework (pCOF) is obtained;pCOF is mixed with 1,2-ethanedithiol and heated to obtain thiolated modified pCOF;Thiolated modified pCOF is stirred with glutathione aqueous solution ultrasonically, then tetra-chloroauric acid is added to carry out reaction, and synergistic antitumor porphyrin-based covalent organic framework confined gold nanocluster heterojunction material, recorded as Au@pCOF, is obtained.The Au@pCOF prepared in the application can be used as a kind of biocompatible antitumor therapeutic agent, under the irradiation of 808 nm near-infrared light, active oxygen is efficiently generated and heat is released, photothermal and photodynamic synergistic enhancement is realized, tumor cells are significantly killed, and is used for space-time integration synergistic antitumor therapy.

The invention relates to a preparation method and system of 1, 2-dithiol, and belongs to the technical field of industrial synthesis. The preparation method of 1, 2-ethanedithiol provided by the invention comprises the following steps: S1, adding lewis acid into a solvent in an inert atmosphere, stirring, then heating and pressurizing, adding hydrogen sulfide and ethylene oxide at the same time, and reacting at 70-90 DEG C to obtain a mixed solution A; s2, performing steam stripping and normal-pressure rectification on the mixed solution to obtain a mixed solution B, and performing oil-water phase separation on the mixed solution B to obtain an oil-phase solution; and S3, carrying out reduced pressure rectification on the oil phase solution, and collecting fractions at 80-110 DEG C to obtain the 1, 2-dithiol. The preparation method of 1, 2-dithioglycol can realize reasonable utilization of hydrogen sulfide gas in waste gas of an oil refinery, is high in synthesis conversion rate and high in yield, can prepare high-purity 1, 2-dithioglycol, realizes resource reutilization, and is a great breakthrough and benefit for environmental protection and a new process.

The application discloses a preparation method of a heavy metal sewage treatment agent and relates to the technical field of sewage treatment. In the preparation of the heavy metal sewage treatment agent, zinc modified Fe3O4 microspheres, hydrochloric acid dopamine and polyethylene imine are reacted to obtain crosslinked PDA / PEI-Zn / Fe3O4; zirconium tetrachloride and p-aldehyde benzene acid are reacted to obtain a zirconium metal cluster; the crosslinked PDA / PEI-Zn / Fe3O4, the zirconium metal cluster and 1,4-diamino-2,5-divinyl benzene are step-by-step reacted to obtain COF-crosslinked PDA / PEI-Zn / Fe3O4; and the COF-crosslinked PDA / PEI-Zn / Fe3O4 is ultraviolet irradiated in a grafting solution composed of 1,2-ethanedithiol, 2,2-dimethoxy-2-phenyl phenylacetone and tetrahydrofuran to obtain the heavy metal sewage treatment agent. The heavy metal sewage treatment agent prepared by the application has excellent adsorption performance and stability, is convenient to recover and can be reused.

The invention discloses a modification method of a ZnO nano-particle film, the film and application, the modification method comprises the following steps: adding ethoxylated polyethyleneimine and 1, 2-ethanedithiol into a solvent to obtain a modification liquid; and coating the ZnO nano-particle film with the modification liquid, and carrying out annealing treatment to obtain the modified ZnO nano-particle film. The modification liquid containing ethoxylated polyethyleneimine and 1, 2-ethanedithiol is adopted to modify the ZnO nano-particle film, through the synergistic effect of PEIE and EDT, the hydrophilicity of the film can be effectively improved, the surface roughness of the film can be effectively reduced, oxygen vacancies of the film can be effectively filled, and in-gap state recombination is inhibited by adjusting the electronic state of sulfur atoms, so that the performance of the film is improved. Therefore, the comprehensive performance of the ZnO nano-particle film can be effectively improved.

This invention belongs to the field of porous organic materials technology, specifically relating to a covalent organic framework material, its preparation method, and its application. It is obtained by a high-temperature ammonia-aldehyde condensation reaction of 1,3,5-phenyltricarboxyhydrazide and 2,5-divinyl-1,4-phenylenedialdehyde, using azobisisobutyronitrile (AIBN) as an initiator, through the reaction of 1,2-ethylenedithiol and COF... BTH‑DVa The vinyl groups on the surface undergo a click reaction, achieving anchorage of thiol groups on the COF surface and the inner walls of the pores; wherein, COF BTH‑DVa The abundance of -N-N- sites and the post-modified thiol groups will endow SH-COF with... BTH‑DVa Multiple HMIs adsorption sites enable SH-COF BTH‑DVa The material exhibits excellent adsorption performance for HMIs, specifically in SH-COF. BTH‑DVa The material can realize the extraction of Pb from aqueous solution. 2+ It can remove efficiently and quickly.