11 results about "Tetrathiafulvalene" patented technology

This invention relates to the field of catalyst technology, and particularly to a method for preparing and applying a self-photosensitive organic molecular catalyst. The method for preparing the self-photosensitive organic molecular catalyst includes the following steps: deprotonating tetrathione with a non-nucleophilic strong base to obtain deprotonated tetrathione; subjecting the deprotonated tetrathione to a nucleophilic substitution reaction to obtain a monotin-substituted tetrathione; subjecting the monotin-substituted tetrathione to a Stille coupling reaction with 5-bromo-isophthalaldehyde to obtain a tetrathione derivative containing multiple aldehyde groups; and reacting the tetrathione derivative containing multiple aldehyde groups with a polyamine via a Schiff base reaction to obtain the self-photosensitive organic molecular catalyst. The self-photosensitive organic molecular catalyst of this invention achieves a synergistic reaction of CO2 reduction and organic molecule oxidation without the need for additional photosensitizers and sacrificial agents.

The invention discloses an efficient and simple synthesis method of a dibenzotetrathiafulvalene derivative, which is characterized in that benzene-1, 2-thiophenol or a derivative of benzene-1, 2-thiophenol is subjected to dimerization in a solvent containing acetic acid under a solvothermal reaction condition to obtain the dibenzotetrathiafulvalene or the derivative of dibenzotetrathiafulvalene. The solvothermal reaction conditions are mild, the operation is simple, and the method is suitable for large-scale preparation and environment-friendly. No toxic by-product is generated in the reaction, the reaction product does not need to be purified, the high-purity crystal compound can be obtained, the product efficiency is improved, and the selectivity is guaranteed.

The invention relates to a modified metal organic framework material, a solar cell and a preparation method and application thereof. The modified metal organic framework material comprises metal ions, terephthalic acid and tetra (4-pyridyl) tetrathiafulvalene, wherein the terephthalic acid and the tetra (4-pyridyl) tetrathiafulvalene are in coordination connection with the metal ions, and the modified metal organic framework material has an MIL-101 skeleton structure. The modified metal organic framework material can be applied to a perovskite solar cell, the stability, crystallinity and passivation performance of the perovskite solar cell are improved, and then the photoelectric conversion efficiency of the solar cell is improved.

Tetrathiafulvalene-2,3,6,7-tetrathiolate (TTFtt) bridged bimetallic complexes with radical character which are bright, air- and water-stable, persistent and exhibit excellent near-infrared photophysical properties; and methods of use of the TTFtt complexes for imaging, guidance of surgery, as qubits, and for interventional medical treatments as theranostic agents are described.

The present invention discloses a method for refining a solid electrolyte based on π-π stacking self-assembled composite aprotic solvents and its application, which is used for the sanding and refining of sulfide solid electrolyte materials. Aiming at the problems of poor dispersion and low efficiency in the sanding and refining of sulfide solid electrolytes in the prior art, the present invention innovatively designs a composite solvent system composed of tetrathiafulvalene (TTF) and hexafluorobenzene, and introduces 1,8-naphthalenedicarboximide as an additive. Through the π-π stacking interaction between TTF (electron-rich π-π donor) and hexafluorobenzene (electron-deficient π-π acceptor), and the synergistic regulation of 1,8-naphthalenedicarboximide, the system forms self-assembled aggregates with a layered structure. Experiments show that the system significantly improves the sanding and refining efficiency of sulfide electrolytes. After refining, the D50 of the powder is as low as 400 nm, and the ionic conductivity reaches 10 mS / cm, which is 120% higher than that of the traditional solvent system.

The invention discloses a donor-receptor supramolecular compound as well as a preparation method and application thereof. The donor-acceptor supramolecular compound is formed by supramolecular self-assembly of donor molecules and acceptor molecules according to a molar ratio of 1: 1, and the donor molecules are any one of trans-1, 2-stilbene, naphthalene, anthracene, pyrene, triphenylene, perylene, carbazole, 9, 9-dimethyl acridine, phenoxazine, 2, 3, 6, 7, 10, 11-hexamethoxy triphenylene, tetrathiafulvalene or dibenzotetrathiafulvalene; the receptor molecule is 1, 4, 5, 8, 9, 11-hexaazabenzonitrile, and the receptor molecule is 1, 4, 5, 8, 9, 11-hexaazabenzonitrile. The donor-acceptor supramolecular compound obtained by the invention not only has near-infrared long-wavelength absorption, but also has a wide absorption range; in addition, the material also has relatively high photothermal conversion performance and relatively good photothermal stability, and has a good application prospect in the aspect of heater materials.

The invention discloses a preparation method of tetrathiafulvalene, which comprises the following steps: piperidine, carbon disulfide and an alkaline sodium-containing compound are mixed to react to generate an intermediate 1, and then bromoacetaldehyde ethylene glycol is added to react to obtain an intermediate 2; mixing and reacting the intermediate 2 with concentrated sulfuric acid and hexafluorophosphorus to obtain an intermediate 3; reacting the intermediate 3 with sodium borohydride to obtain an intermediate 4; reacting the intermediate 4, acetic anhydride and hexafluorophosphoric acid to obtain an intermediate 5; and reacting the intermediate 5 with alkali in an organic solvent to obtain tetrathiafulvalene. In the synthesis route, the reaction conditions of the preparation process from the intermediate 2 to the intermediate 3 are adjusted, the intermediate 3 is prepared by a one-pot method, the step of purifying the intermediate in the preparation process from the intermediate 2 to the intermediate 3 in the prior art is avoided, the synthesis time is shortened, and the efficiency is greatly improved; the synthesis route from the intermediate 5 to the tetrathiafulvalene is adjusted in one step, so that the step of converting hexafluorophosphate into iodized salt is avoided, and the synthesis efficiency is further improved.

The invention relates to a photothermal conversion crystal material and a preparation method and application thereof, a tetrathiafulvalene structural unit has a 10-center 14-electron large conjugated unit pi 1014, when the tetrathiafulvalene unit is connected with four pyridine groups, a larger conjugated unit is formed, and a specific conjugated system has specific influence on the photothermal conversion performance of the crystal material; the positions of carboxyl groups in aromatic rings are different, and the steric configurations of the ligands are different, so that the composition, structure and steric configuration of the coordination polymer of the ligands and metal ions are different, and the coordination polymer has different physical and chemical properties and different applications; under the specific preparation method and crystallization conditions, after acid radicals of 2, 2 '-bithiophene-5, 5'-dicarboxylic acid and zinc ions are subjected to a coordination reaction, the formed MOF crystal material has specific composition, structure and spatial configuration, so that the prepared MOF crystal material has specific photothermal conversion performance.

The invention provides a tetrathiafulvalene tetrabenzaldehyde Schiff base caged compound. The molecular formula of the tetrathiafulvalene tetrabenzaldehyde Schiff base caged compound is C126H108N16S12, the molecular weight of the tetrathiafulvalene tetrabenzaldehyde Schiff base caged compound is 2231.08, and the cell parameters of the tetrathiafulvalene tetrabenzaldehyde Schiff base caged compound are as follows: a is equal to 17.0810 (12), b is equal to 19.3138 (13), and c is equal to 22.0054 (4). Alpha is equal to 104.811 (2) degrees, beta is equal to 101.466 (2) degrees, gamma is equal to 101.348 (2) degrees, V is equal to 6639.3 (8) 3, Z is equal to 2, the space group is P-1, and the crystal belongs to a triclinic system. The ultraviolet transmission cut-off edge of the compound is 400 nm or above, the compound has a wide transmission range and a remarkable near-red absorption rate, according to a near-infrared photothermal conversion performance test, the temperature of the crystal can be stably increased to 160 DEG C or above within 40 seconds in 10 times of illumination-cooling circulation, and the compound has excellent photothermal conversion performance. The crystal adopts a liquid phase diffusion method, the crystal can be obtained by free diffusion through layered standing, and the crystal has the advantages that the operation is simple, the used reagent is a common organic raw material, the growth cycle is short, the physicochemical property is stable and the like, and can be applied to various photo-thermal conversion materials.

This invention provides a tetrathiofulvalene tetrabenzaldehyde Schiff base cage compound, the molecular formula of which is C2. 126 H 108 N 16 S 12 The molecular weight is 2231.08, and the unit cell parameters are: a=17.0810(12)Å, b=19.3138(13)Å, c=22.0054(4)Å; α=104.811(2)°, β=101.466(2)°, γ=101.348(2)°, V=6639.3(8)Å. 3 The compound has a Z=2 crystal, space group P-1, and belongs to the triclinic crystal system. It exhibits a wide ultraviolet transmission cutoff edge above 400 nm and a significant near-infrared absorption rate. Near-infrared photothermal conversion performance tests show that the crystal can stably reach above 160°C in 40 seconds during 10 light-cooling cycles, demonstrating excellent photothermal conversion performance. This crystal is obtained through a liquid-phase diffusion method, where it is allowed to diffuse freely by layering and allowing it to stand still. This method offers advantages such as simple operation, the use of common organic raw materials, a short growth cycle, and stable physicochemical properties, making it suitable for various photothermal conversion materials.

The application discloses a high-concentration organic liquid flow battery positive electrolyte and a preparation method thereof. The application first synthesizes methyl tetrathiafulvalene dimethylate by taking carbon disulfide and methyl propiolate as raw materials and under the catalysis of tributyl phosphine, and then synthesizes diethylene glycol monomethyl ether tetrathiafulvalene dimethylate ester by ester exchange reaction of the methyl tetrathiafulvalene dimethylate and diethylene glycol monomethyl ether under the catalysis of sodium hydroxide. The obtained diethylene glycol monomethyl ether tetrathiafulvalene dimethylate ester is a viscous liquid, and can be mixed with ethyl methyl carbonate, ethylene carbonate, propylene carbonate and lithium hexafluorophosphate to obtain the high-concentration organic liquid flow battery positive electrolyte. The obtained electrolyte has the advantages of high volume specific capacity, high redox potential and high cycle stability.