48 results about "Supramolecular chemistry" patented technology

The invention relates to the technical field of organic supramolecular chemical materials, in particular to an octyloxy-modified imine gelator, bi-component gel of the octyloxy-modified imine gelator and a preparation method and application of the octyloxy-modified imine gelator. The gelator is a symmetric o-octyloxy modified p-phenylenedialdehyde-maleonitrile imine gelator, and has an obvious aggregation-induced emission property; the gelator and the cholesteryl half-ester gel can form double-component organic gel without fluorescence emission in an organic solvent; the fluorescence-emission-free double-component gel formed in tert-butyl alcohol is red fluorescence-emission gel when meeting water, and is converted into blue fluorescence-emission gel when meeting NaClO, so that water and NaClO can be rapidly and intuitively detected; the gelator has fluorescence enhancement and blue shift after encountering NaClO in a solution state, has fluorescence'off-on 'detection on NaClO, has fluorescence emission intensity reduced after Hg < 2 + > is added in the solution state, and has fluorescence'on-off' detection performance on Hg < 2 + >.

The invention discloses a tetrapyridine pyrene-based metal organic cage as well as a preparation method and application thereof, and belongs to the technical field of supramolecular chemistry. The metal organic cage is prepared from a tetrapyridine pyrene ligand, a tetradentate sodium carboxylate ligand and a cis-platinum metal ligand, and the metal organic cage is endowed with photocatalytic performance by introducing a photosensitive group into the ligands, so that the metal organic cage can effectively degrade perfluorooctanoic acid through a photo-induced electron transfer mechanism, thereby realizing an adsorption-degradation integrated function. The metal organic cages can release effective reactive oxygen species under the irradiation of a 365 nm ultraviolet lamp and can degrade the perfluorooctanoic acid, the defluorination rate can reach 80%, the perfluorooctanoic acid is degraded into a short-chain compound, and a photodegradation system is artificially prepared.

The application relates to the field of supramolecular chemistry and discloses a dendrimer supramolecular gel factor and application thereof. The molecular structure of the gel factor is a polybenzyl ether dendrimer modified by peripheral halogen atoms (chlorine, bromine or iodine). The gelation performance of the gel factor can be precisely controlled by changing the type, substitution number and position of the peripheral halogen, and the type and generation of the dendrimer. The dendrimer gel factor provided by the application has very excellent gelation performance. The dendrimer gel factor can effectively gelate in dozens of solvents such as polar solvents, non-polar solvents and mixed solvents containing water, and the minimum gelation concentration CGC is 1.5 mg / mL, belonging to a super gel factor. In addition, the gel factor has a simple preparation method and high yield, and is very suitable for being developed into a general and commercial supramolecular gel factor and applied to the preparation of various soft material functional materials.

The invention relates to the technical field of organic supramolecular chemical materials, in particular to an imine gelator with tri-state red light emission, a three-dimensional network-shaped gel material of the imine gelator, a preparation method and application of the imine gelator. The gel factor is an asymmetric cholesterol-phenoxy-maleonitrile-diethylamino salicyl gel factor, and can be self-assembled in different solvents to form three-dimensional structure gel of a short rod shape, a fiber net shape and a flat strip shape; due to the highly conjugated asymmetric molecular structure, the fluorescent probe presents three-state red fluorescence emission in a solid state, a solution state and a gel state; the gelator shows intuitive colorimetric change and fluorescence'on-off 'double-signal detection performance on Fe < 3 + > and Co < 2 + > in toluene gel, and has colorimetric change, fluorescence'on-off' and gel-to-sol conversion three-signal response on Cu < 2 + >; the gelator has fluorescence'on-off 'detection response to Cu < 2 + > in a solution state, and double-state four-detection response performance to Cu < 2 + > is achieved; the gelator-Cu < 2 + > binary system has fluorescent on-off detection potential on Pb < 2 + >.

The invention relates to the technical field of concrete admixtures, in particular to a preparation method of a high-performance concrete retarder. According to the method, graft copolymerization and supramolecular chemical modification are organically combined, firstly, straw fibers serve as a matrix and are subjected to free radical graft copolymerization with acrylic acid and acrylamide, carboxyl and amide functional groups are introduced, and nanofibers with a slow release function are formed; then constructing a dynamic network structure with sodium gluconate and zinc ions through supramolecular self-assembly (hydrogen bonds and coordinate bonds), compounding with the modified sweet potato powder, and performing swelling treatment to obtain the retarder. According to the retarder prepared by the method, the initial setting time reaches 9-10 hours, the final setting time reaches 10-11 hours, the compressive strength of 3d exceeds 45MPa, the compressive strength of 28d reaches 75MPa or above, and the retarder has good compatibility with a polycarboxylate superplasticizer and is free of the problem of condensation sensitivity. The method is suitable for the low-carbon fields of maritime work cement, light building materials and the like.

The application belongs to the technical field of organic chemical synthesis, and particularly relates to a nitrogen center chiral base derivative, a preparation method and application thereof. The preparation method of the nitrogen center chiral base derivative provided by the application can effectively synthesize a base with only a nitrogen chiral center by using a tetrahydrodibenzo-diazocine compound as a raw material and through chiral phosphoric acid catalyzed amination reaction. Moreover, the synthesis method provided by the application has the advantages of high efficiency, simple steps and strong enantioselectivity, is suitable for industrialized production of chiral bases and derivatives thereof, and provides a new approach for research and application of chiral compounds. Meanwhile, the base derivative prepared by the application is a base molecule with a nitrogen center chirality, and has wide application prospects in the fields of molecular recognition, DNA binding, supramolecular chemistry, material science, asymmetric catalysis and drug development.

The application relates to the field of supramolecular chemistry, and discloses a peripheral trifluoromethyl functionalized polybenzyl ether dendrimer gelator, a preparation method and application thereof. The peripheral trifluoromethyl functionalized polybenzyl ether dendrimer gelator is shown in the following formula, can form stable supramolecular organic gels or supramolecular self-assembly systems in various organic solvents or mixed solvents through the synergistic effect of multiple pi-pi interactions between peripheral aromatic rings and F...H weak hydrogen bonds, has a minimum gelation concentration CGC of 3.2 mg / mL, and is easy to be functionally modified, for example, a gel with an aggregation-induced emission performance is prepared by introducing 1-pyrene or 9-anthracene functional groups. The preparation method of the gelator is efficient, high-yield and high-purity.

This invention belongs to the field of supramolecular chemistry and materials technology, and discloses a class of organometallic cages based on polythiol ligands, their preparation methods, and applications; the general chemical formula of the organometallic cages based on polythiol ligands is: [(R n M) x L y (IL) z In this invention, M is a metal center; R is an organic group attached to the metal center M; n is the number of R groups attached to each metal center M; L is an aromatic polythiol ligand; IL is an ionic liquid; x, y, and z are all integers ≥1. This invention uses an ionic liquid as a reaction medium and combines it with a competitive coordination control strategy of organic amines to achieve controllable self-assembly of organometallic cages. These organometallic cages have unique melting and glass transition characteristics, can be used to prepare high-quality thin films through hot pressing film deposition technology, and can also be used as photoresist film deposition materials in various photolithography processes. They have broad application prospects in flexible electronics, packaging materials, micro-nano fabrication, and other fields.

This invention discloses a method for synthesizing potassium 4-methoxysalicylate based on supramolecular-assisted methylation, belonging to the field of organic synthesis technology. The process is based on supramolecular chemistry principles and includes the following steps: (1) Preparation of a macrocyclic host molecule-methylating agent complex loaded with a methylating agent: The macrocyclic host molecule and the methylating agent are reacted at pH 7-9 and 25-40℃ to form a complex solution; (2) One-pot preparation of the target product: 2,4-dihydroxybenzoic acid is salted with potassium hydroxide, potassium carbonate is added, and the above complex solution is added dropwise. A selective methylation reaction is carried out at 55-65℃. After the reaction is complete, post-treatment yields the product. This invention utilizes the molecular recognition function of the macrocyclic host to achieve highly selective methylation of the 4-hydroxyl group under mild conditions. This process has the advantages of simple operation, high safety, low waste, and recyclable host molecules. The yield of potassium 4-methoxysalicylate can reach over 85%, and the purity exceeds 99.0%.

The invention discloses a supramolecular compound with a specific spatial size, which belongs to the field of supramolecular chemistry, and the molecular structural formula of the supramolecular compound is as follows: the invention aims to synthesize a cyclic compound with a specific cavity size through a simple and efficient method, and the internal cavity of the cyclic compound has a size of about 3 angstroms; specific cations (such as cerium ions) can be effectively identified, and the cyclic compound becomes a novel supramolecular material for extracting rare earth elements.

The invention relates to the technical field of supramolecular chemistry, and particularly discloses a plant polyphenol supramolecular self-assembly system and a construction method and application thereof, and the plant polyphenol supramolecular self-assembly system is obtained by mixing echinacoside and ferrous gluconate in an environment with pH of 7-11 according to a molar ratio of (5-6): 4, heating and reacting at 40-45 DEG C for 20-24 hours, and dialyzing and drying. The plant polyphenol supramolecular self-assembly system provided by the invention shows an excellent drug release behavior, shows remarkable pH responsiveness in an acid environment, effectively enhances the antioxidant and neuroprotective effects of ECH, and remarkably improves the blood-brain barrier transmittance of ECH.

This invention discloses a chiral Pt metal-organic complex based on chiral Pt metal coordination, its preparation method, and its applications, belonging to the field of supramolecular chemistry. This method transfers chirality from the metal node to the tetraphenylethylene plane through metal coordination, forming a helical structure during crystallization to obtain a high-performance circularly polarized luminescent material. The introduction of a chiral binaphthyl group solves the problem of excessive distance between the chirality and the luminescent unit. Rigid coordination and steric effects are used to directionally induce a helical conformation in tetraphenylethylene, obtaining a single chiral molecule. Furthermore, this method connects the chiral group via covalent bonds and uses aggregation-induced emission molecules instead of traditional dyes to prepare materials with both a large luminescence asymmetry factor and high fluorescence quantum yield, expanding the application range of metal-organic cages.

The invention belongs to the technical field of supramolecular chemistry and advanced materials, and discloses a solid-state fluorescent COF material based on a mechanically-interlocked macrocyclic host-guest compound and a preparation method and application of the solid-state fluorescent COF material based on the mechanically-interlocked macrocyclic host-guest compound based on the mechanically-interlocked macrocyclic host-guest compound based on the mechanically-interlocked macrocyclic host-guest compound based on the mechanically-interlocked macrocyclic host-guest compound. The crystal material is formed through covalent bond connection; wherein the macrocyclic molecules are fixed on the framework through a mechanical interlocking effect. According to the present invention, by using the steric hindrance and the confinement effect of the macrocyclic molecule, the pi-pi accumulation of the luminescent group in the frame and the aggregation-induced fluorescence quenching are effectively inhibited so as to solve the key problem of the aggregation-induced fluorescence quenching, and the wide combination of the macrocyclic molecule, the guest molecule and the obtained material is protected so as to provide the broad application prospect. And a universal functional material platform is formed. The method has a wide application prospect in the fields of fluorescence sensing, fluorescence anti-counterfeiting, information encryption, photoelectricity and the like.

The invention relates to the technical field of supramolecular chemistry and high polymer materials, in particular to a method for preparing polyrotaxane based on cyclodextrin accurate rotaxane and oxidative glutathione cross-linking end capping and polyrotaxane. The method comprises the following steps: a) dissolving cyclodextrin and polyethylene glycol diacrylate in an alkaline aqueous solution or water, and carrying out self-assembly inclusion to form pseudorotaxane; and b) under an alkaline condition, adding oxidized glutathione into the quasi rotaxane solution, and carrying out Michael addition cross-linking reaction to realize end capping, thereby obtaining the polyrotaxane. According to the preparation method, the GSSG is adopted as the difunctional crosslinking end-capping reagent for the first time, the difunctional characteristic of the GSSG is utilized, the GSSG serves as the difunctional crosslinking end-capping reagent and reacts with multiple acrylate groups at the tail ends of the pseudorotaxane at the same time, a three-dimensional crosslinking network is formed, and the prepared polyrotaxane has excellent mechanical properties and unique dynamic slip ring characteristics, and can be applied to the field of chemical engineering. And the method has stimuli responsiveness to a reducing environment.

The present invention discloses an AIE Schiff base gel and its preparation method and application, belonging to the field of supramolecular chemistry technology. The Schiff base derivative of the AIE Schiff base gel of the present invention has a structure shown in Formula I, and the Schiff base derivative can form a gel in a variety of organic solvents and mixed solvents. Whether the metal ion solution contains Cu is judged by whether the gel is formed again. 2+ At the same time, the tetrahydrofuran solution of AIE Schiff base derivatives containing different alkoxy chains was mixed with the metal ion aqueous solution, and the ultraviolet-visible light absorption and fluorescence emission tests showed that Cu 2+ The AIE Schiff base gel containing different alkoxy chains of the present invention can achieve visible Cu 2+ The selective test is performed using the bottle inversion method of the gel test, which does not require complex instruments. The AIE Schiff base gel has broad application prospects in the analysis and detection of metal ions.

The invention relates to the field of supramolecular gel synthesis, and provides a ligand (LNH2, LUPy) which takes triphenylbenzene as a central connector and has an amino group or an Upy unit at the tail end, a complex (HNH2, HUPy) which can be formed by self-assembling the ligand and phosphate anions in an acetonitrile solution and has a helical structure, and supramolecular gel formed by volatilizing the complex through acetonitrile or swelling chloroform. The gel provided by the invention can be used as a stationary phase to realize host-guest separation under a solid-liquid phase, and the gel has excellent conductivity, so that the host-guest separation of the gel can be monitored in real time through an electric sensing method, and a new method and thought are provided for researching host-guest properties in supramolecular chemistry.

This invention belongs to the interdisciplinary field of polymer materials and supramolecular chemistry, specifically relating to a polyurethane slip-ring crosslinked network elastic material with a slip-ring effect. The invention uses a macrocyclic molecule with oxetane-functionalized side groups as the cyclic component of a rotaxane. Through host-guest inclusion interactions, it forms a rotaxane polymer with the linear backbone, followed by a ring-opening crosslinking reaction of the oxetane groups, constructing an interpenetrating network structure that combines a three-dimensional covalent network with a supramolecular slip-ring effect. Under mechanical stimulation, this material dissipates energy through the relative slippage of the ring molecules along the backbone, exhibiting high resilience and wide-temperature-range stability. It can be applied in fields such as flexible electronics, wearable devices, and high-performance damping materials.

The application discloses a synthesis method of an aldehyde group-containing N-arylated viologen molecule, and the method adopts a Nesmeyanov reaction to prepare the aldehyde group-containing N-arylated viologen molecule by reacting a pyridine compound and an asymmetric iodonium molecule containing an aldehyde group. The synthesis method provided by the application is simple in process, easy to purify, high in yield and strong in universality. The prepared molecule has excellent electrochemical performance and electrochromic performance. The introduction of the aldehyde group further expands the space of modification, provides unlimited possibilities for constructing various functional materials containing viologen, and is expected to be applied to multiple fields such as electrochromic, optical chromic, energy storage, adsorption, supramolecular chemistry, catalysis and sensing.

The invention relates to the technical field of supramolecular chemistry, in particular to a tetradentate pyridine ligand, a near-infrared two-region fluorescent metal cage as well as a preparation method and application of the tetradentate pyridine ligand and the near-infrared two-region fluorescent metal cage. The structural formula of the tetradentate pyridine ligand is shown in the specification, R is shown in the specification, and the element X is S or Se. The tetradentate pyridine ligand disclosed by the invention is a typical tetradentate pyridine ligand with a D-pi-A-pi-D structure and has strong near-infrared absorption capacity and efficient near-infrared two-region emission, and absorbed photon energy can be released in a fluorescent form; therefore, the metal cage prepared from the metal nano-material can be applied to in-vivo near-infrared two-region fluorescence imaging of mouse tumors. Due to the small ground state-excited state energy gap difference of the tetradentate pyridine ligand, photon energy absorbed by the metal cage prepared from the tetradentate pyridine ligand can also be released in the form of non-radiative transition, namely heat, so that the metal cage can be further applied to photo-thermal imaging and photo-thermal treatment and can play a complementary role with near-infrared two-region fluorescence imaging, and the in-vivo imaging quality is improved.

The invention belongs to the technical field of supramolecular chemistry, and particularly relates to a density-controllable carboxymethyl chitosan Schiff base based on trans-2-hexenal as well as a preparation method and application of the density-controllable carboxymethyl chitosan Schiff base. The preparation method comprises the following steps: carrying out nucleophilic addition-elimination reaction on amino compound carboxymethyl chitosan and different moles of trans-2-hexenal to prepare Schiff bases with different densities; the Schiff base can be used for preparing insecticide and bactericide products.

The invention discloses an amide macrocyclic compound for fluorine ion recognition and a preparation method and application thereof, and belongs to the technical field of supramolecular chemical macrocyclic subject design and subject-object recognition, a macrocyclic aromatic amide subject is prepared through Suzuki coupling reaction and condensation reaction, and a macrocyclic receptor is mainly composed of three 2, 3-difluoro-2, 3-difluoro-2, 3-difluoro-2, 3-difluoro-2, 3-difluoro-2, 3-difluoro-2, 3-difluoro-2, 3-difluoro-2, 3-difluoro-2, 3- the molecular fragments comprise a 1, 6-pyridine diamide molecular fragment and three biphenyl molecular fragments; the molecules prepared by the method internally contain huge cavities and rich hydrogen bond recognition sites, fluorine ions can be selectively recognized in a solution through hydrogen bond interaction, and the complexing constant on the fluorine ions is as high as 104M <-1 >; the preparation process is simple and convenient, and raw materials are easily available; the method has potential application prospects in the fields of fluoride detection, fluorine-containing pollutant removal and the like.

The present invention relates to the technical field of organic supramolecular chemical materials, and in particular to a red light emitting gel factor, a fibrous gel soft material, and a preparation method and application thereof. The gel factor is a cholesterol-phenyl-maleonitrile-juronidine compound, which exhibits red light emission in a solution state and has a strong affinity for Cu 2+ The invention has good single selectivity and fluorescence "on-off" detection response; the gel factor can form a rod-shaped fiber gel soft material in a mixed solvent of chloroform and methanol with a volume ratio of 3:2, and the fiber gel soft material encounters Cu 2+ Then its red fluorescence emission is quenched.

The present invention relates to the technical field of supramolecular chemistry, and specifically discloses a plant polyphenol supramolecular self-assembly system, a construction method and an application thereof. The plant polyphenol supramolecular self-assembly system is obtained by mixing echinacoside and ferrous gluconate at a molar ratio of 5-6:4 in an environment with a pH of 7-11, heating and reacting at 40°C-45°C for 20 h-24 h, and then through dialysis and drying. The plant polyphenol supramolecular self-assembly system provided by the present invention exhibits excellent drug release behavior, shows significant pH responsiveness in an acidic environment, effectively enhances the antioxidant and neuroprotective effects of ECH, and significantly improves its blood-brain barrier permeability.

The application belongs to the technical field of supramolecular chemistry, and particularly relates to a dense controllable carboxymethyl chitosan Schiff base based on trans-2-hexenal and a preparation method and application thereof. The Schiff base with different densities is prepared by using the nucleophilic addition-elimination reaction of an amino compound carboxymethyl chitosan and different moles of trans-2-hexenal. The Schiff base can be used for preparing insecticide and fungicide products.

The invention provides a sulfur-containing tridentate compound as well as a preparation method and application thereof, and relates to the technical field of supramolecular chemistry and organic synthesis. According to the invention, different tridentate skeletons are designed and combined with a sulfur-containing compound to synthesize the sulfur-containing tridentate compound. The compound is combined with CB [8] to construct a trigerane assembly, and the size of the gold nanoparticles is limited by stabilizing the gold nanoparticles through intermolecular holes formed by aggregation of the assembly. The sulfur-containing tridentate compound contains N and S atoms, the nitrogen atom is used as a nucleation site of gold, and the sulfur atom and the gold form a stable Au-S bond, so that the gold nanoparticles with uniform size are easier to prepare. The gold nanoparticles with uniform size prepared by the method have higher catalytic activity in the aspect of catalytic application.

The invention discloses a hexaazahexaketone macrocyclic molecule and a preparation method thereof, and belongs to the technical field of organic supramolecular chemistry. The process is simple, raw materials are easy to obtain, the product yield is high, separation and purification are easy, the obtained macrocyclic molecule has excellent stability, the molecular structure contains rich active sites and unique cavities, and a good foundation is provided for functional application of the macrocyclic molecule; the synthesized hexaazahexaone macrocyclic molecule can be coordinated with various metal ions, including lanthanide metal ions (such as La < 3 + >, Ce < 3 + >, Dy < 3 + > and the like) and transition metal ions (such as Mn < 2 + >, Fe < 2 + >, Cu < 2 + >, Ni < 2 + > and the like). Due to the characteristic, the structural diversity of the macrocyclic molecule is expanded, and the macrocyclic molecule can be used as a core ligand in network chemistry and is used for constructing porous materials such as a metal organic framework (MOFs), a covalent organic framework (COFs) and a hydrogen bond organic framework (HOFs), so that the chemical activity and the application range of the macrocyclic molecule are further expanded.

The present disclosure relates generally to the field of supramolecular chemistry, in particular to novel supramolecular aggregates, methods for their preparation and cosmetic compositions containing the same.

The application discloses an iron porphyrin-based lantern-shaped metal-organic capsule, a preparation method thereof and a biomimetic photocatalytic application thereof, and belongs to the technical field of metal-organic supramolecular chemistry and photocatalysis. Fe )3 2+ , which is self-assembled from three biscalix [metal porphyrin iron (III)] ligands and two trinuclear zirconium-oxygen clusters. The preparation method comprises two steps of ligand synthesis and coordination self-assembly. The application further provides a biomimetic photocatalytic application method based on the capsule, that is, a photosensitizer and an electron donor are pre-photolysis pre-incubated to simulate the pre-enrichment process of a cofactor in enzyme catalysis, high-concentration reduced active species are generated, and then the capsule is added for photocatalytic CO2 reduction, so that super-efficient conversion with an initial conversion frequency of 165 s ‑ ¹, a conversion number of 180,000 and CO selectivity of more than 99.9% is realized, and the kinetics presents zero-order dependence on the concentration of the photosensitizer. In addition, the capsule can also couple CO2 reduction with organic molecule oxidation and cyclization reaction to cooperatively generate benzimidazole or benzothiazole compounds. The application provides a new strategy for efficient biomimetic photocatalyst design and has wide application prospects in the fields of carbon neutralization and photosynthetic fuel.

The invention belongs to the technical field of organic chemical synthesis, and particularly relates to a nitrogen center chiral imgabs0 # alkali derivative as well as a preparation method and application thereof. According to the preparation method of the nitrogen center chirality # imgabs 1 # alkali derivative provided by the invention, a tetrahydrodibenzodiazepine ring compound is taken as a raw material, and the # imgabs 2 # alkali only having a nitrogen chirality center can be effectively synthesized through an amination reaction catalyzed by chiral phosphoric acid. Moreover, the synthesis method provided by the invention has the advantages of high efficiency, simple steps and strong enantioselectivity, is suitable for industrial production of chiral imgabs3 # alkali and derivatives thereof, and provides a new way for research and application of chiral compounds. Meanwhile, the prepared # imgabs4 # alkali derivative is a # imgabs5 # alkali molecule with nitrogen center chirality, and has wide application prospects in the fields of molecular recognition, DNA binding, supramolecular chemistry, material science, asymmetric catalysis, drug development and the like.

The invention discloses a four-component metal organic cage as well as a preparation method and application thereof, and belongs to the technical field of supramolecular chemistry. The metal organic cage is based on self-assembly driven by transition metal coordination, a shape complementation strategy between ligands and a molecular docking method, and discloses a series of metal organic cages based on perylene diimide and p-terphenyl pyridine ligands, which are asymmetric in space structure and have four components. The function integration of the pyridine ligand in the metal cage can realize charge transfer in the multi-component metal organic cage, so that the metal cage can be applied to photocatalytic oxidation reaction.