4 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 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.

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.