250 results about "BODIPY" patented technology

The invention discloses a verification method for regulating and controlling proliferation and differentiation of bovine adipocytes by gene interference, which comprises the following steps: cutting bovine adipocyte tissues into small blocks, directly pasting the small blocks in a culture dish for culture, and promoting cell growth and proliferation by using nutrition and growth factors of the tissues; a ZNF423 gene is targeted by adopting an siRNA technology, siRNA is transfected into bovine fat cells by utilizing a transfection reagent, and the siRNA is an interference fragment containing si-ZNF423; the method comprises the following steps: respectively extracting total RNA (Ribonucleic Acid) and total protein of bovine adipocytes, and detecting by utilizing qPCR (Quantitative Polymerase Chain Reaction) quantitative analysis, a WB (White Batch) technology, EdU dyeing, flow cytometry detection, oil red O, BODIPY (Boron Dipyrromethene), Nile Red dyeing, TG (Triglyceride) content determination and the like. According to the invention, ZNF423 gene expression is interfered by the interference fragment containing si-ZNF423, and the effect of inhibiting proliferation and differentiation of bovine adipocytes is detected by various methods, so that the effect of the interference fragment in the bovine adipocytes is known conveniently, and regulation and control of proliferation and differentiation of the bovine adipocytes are realized by interfering gene expression by the interference fragment. The beef quality can be improved; the beef cattle breeding can be optimized.

The invention belongs to the technical field of organic synthesis, and particularly discloses an ammonia aromatic alkene modified near-infrared BODIPY fluorescent probe as well as a preparation method and application thereof.The near-infrared BODIPY fluorescent probe is obtained by adopting 6-(dimethylamino) nicotinic aldehyde to directionally modify the alpha position of BODIPY and constructing an expanded conjugated system through Knoevenagel condensation. Wherein dimethylamino provides a strong electron donating effect, a molecular structure is twisted into a non-planar configuration due to steric hindrance of a pyridine ring, pi-pi accumulation is reduced, and an ACQ effect is inhibited. According to the structural modification strategy, significant red shift of absorption / emission wavelength is realized by expanding a molecular pi-conjugated skeleton, and meanwhile, the stability of the BODIPY core and the quantum yield are effectively enhanced. The probe molecule can specifically recognize the diphenylalanine dipeptide structural unit by utilizing the synergistic coordination effect of the 2-aminopyridine derivative and the BODIPY mother nucleus, so that the selective detection of the Alzheimer's disease biomarker Abeta42 is realized, and a novel optical detection tool is provided for the early molecular diagnosis and targeted therapy of AD (Alzheimer's disease).

The invention discloses a core-shell structure Au-coated CeO2 nano-catalyst and a preparation method and application thereof, and belongs to the technical field of core-shell structure catalysts.The preparation method of the catalyst comprises the following steps that S1, a chloroauric acid solution and a low-concentration cerium chloride solution are added into deionized water and stirred and mixed at the temperature of 5 DEG C, then an ammonia water solution is rapidly added, stirring and mixing are conducted at the temperature of 5 DEG C, and a mixed solution is obtained; quickly adding a high-concentration cerium chloride solution, and continuously stirring for 30 minutes to obtain a mixed solution; s2, carrying out centrifugal separation on the mixed solution to retain a precipitate, washing the precipitate with deionized water and absolute ethyl alcohol, and carrying out freeze drying to obtain a catalyst precursor; s3, performing cleaning treatment and annealing treatment on the catalyst precursor, and cooling to room temperature to obtain a core-shell structure Au-coated CeO2 nano-catalyst; when the catalyst is applied to catalytic synthesis of the BODIPY fluorescent dye, excellent catalytic performance and recycling performance are shown, and the yield of the BODIPY fluorescent dye can be remarkably increased.

The invention provides an aza-BODIPY dye molecule with near-infrared two-region absorption, 4-cyanophenyl is used as an electron acceptor for modification at 1, 7 sites, thiophene-triphenylamine is used as a strong electron donor for modification at 3, 5 sites, an aza-BODIPY dye with extremely strong intramolecular charge transfer is constructed, the absorption spectrum of the aza-BODIPY dye is extended to 1100 nm, and after the aza-BODIPY dye molecule forms an aggregation state, the absorption spectrum of the aza-BODIPY dye molecule has strong absorption spectrum. The aza-BODIPY dye molecule has the advantages that the absorption spectrum of the aza-BODIPY dye molecule is extended to 1250nm, the aza-BODIPY dye molecule has good absorption in an NIR-II region, and the nano-particles prepared by self-assembling the aza-BODIPY dye molecule and the amphiphilic polymer F127 show 46.2% of high photothermal conversion efficiency under the excitation of 1060nm laser, can be used for photoacoustic imaging and photothermal therapy, and can be used for preparing the nano-particles. The problems that tissue penetrability is insufficient and deep tumors cannot be diagnosed and treated in traditional tumor light diagnosis and treatment are solved.

The present invention provides a lipoprotein subtype detection kit, a preparation method and an application thereof, belonging to the technical field of biological detection. In the separating gel of the kit, BODIPY 505 / 515 is mixed, so that staining is not required during detection, and direct sample loading and electrophoresis can be carried out, reducing the operation steps and shortening the operation time, and improving the detection sensitivity. In addition, N,N'-bisacryloylpiperazine is mixed in both the separating gel and the stacking gel. The rigidity of the N,N'-bisacryloylpiperazine gel is used to reduce gel deformation and trailing phenomena during migration, significantly improving the resolution, and enhancing the stability and repeatability of detection. The detection kit provided by the present invention has the advantages of short detection operation time, high detection sensitivity, high resolution, good stability and repeatability.

The invention provides an aza-BODIPY molecule with NIR-II fluorescence emission and I-type photodynamic activity and a preparation method thereof. The aza-BODIPY molecule has good light absorption in a near-infrared (NIR) region, the emission peak of the aza-BODIPY molecule is prolonged to a near-infrared second region (NIR-II), and the aza-BODIPY molecule shows an ultrahigh NIR-II fluorescence quantum yield of 13%. Meanwhile, the photosensitizer prepared by adopting aza-BODIPY molecules can effectively generate I-type active oxygen species, namely superoxide anion free radicals, under the excitation of 808nm laser. On the basis, high-resolution tumor fluorescence imaging can be realized by utilizing NIR-II fluorescence of the aza-fluorine boron fluorescent sensitizer, and the aza-fluorine boron fluorescent sensitizer is used for accurate and efficient NIR-II fluorescence imaging mediated I-type photodynamic therapy of deep tumor tissues.

The invention discloses a preparation method of a boron-dipyrrolyl porous organic polymer and application of the boron-dipyrrolyl porous organic polymer in photocatalytic production of hydrogen peroxide. The boron-dipyrrolyl porous organic polymer is a cyano-containing boron-dipyrrolyl porous organic polymer. The preparation method comprises the following steps: carrying out a Sonogashira coupling reaction on an electron acceptor boron dipyrromethene derivative and an electron donor compound to prepare a boron dipyrromethene-based porous organic polymer containing acetylenic bonds; and carrying out free radical reaction modification on the BODIPY porous organic polymer containing the acetylenic bond to prepare the BODIPY porous organic polymer containing the cyano group. The preparation method comprises the following steps: polymerizing an electron acceptor boron dipyrromethene and different electron donors by utilizing a Sonogashira coupling reaction to obtain a boron dipyrromethene-based porous organic polymer containing an acetylenic bond, and carrying out post-modification on the acetylenic bond through a free radical reaction to obtain the boron dipyrromethene-based porous organic polymer containing cyano groups with good photocatalytic performance. The polymer can be used for photocatalytic production of hydrogen peroxide in water.

The invention discloses preparation of a nitrogen-containing seven-membered fluorine-boron compound and application of the nitrogen-containing seven-membered fluorine-boron compound to a fluorescent anti-counterfeiting film, the structure of the compound is as follows: # imgabs0, the dye takes 2, 3, 3-trimethylindole and dibromo-2-pyrrolecarboxaldehyde as raw materials, under the action of acetic acid, piperidine and methylbenzene, a Knoevenagel condensation reaction is carried out, and the dibromo seven-membered fluorine-boron fluorescent dye is generated. The dibromo seven-membered fluorine boron fluorescent dye respectively reacts with phenylboronic acid, 4-cyanophenylboronic acid, p-methoxyphenylboronic acid and triphenylamine phenylboronic acid to obtain a final compound. The compound can act with acrylic resin to form a film on a thin film, and can be colored under natural light, and clear fluorescence can be seen under an ultraviolet lamp (365nm). The fluorescent dye is simple, easy to obtain, low in manufacturing cost, high in film forming speed with acrylic resin or a polyvinyl alcohol solution on a thin film, high in anti-counterfeiting coefficient, large in counterfeiting difficulty and huge in potential in the aspects of fluorescent anti-counterfeiting packaging films, OLDE and the like.

The invention relates to the technical field of biological medicines, and particularly discloses a BODIPY (boron dipyrromethene)-based compound and an application of the BODIPY-based compound in photodynamic oxidation of beta-amyloid protein (Abeta). The compound takes iodo-BODIPY as a photosensitive core and is connected with 4-t-butyloxycarboryl benzene as an A beta recognition group. The introduction of iodine atoms significantly enhances the intersystem crossing ability of molecules, so that the molecules have excellent reactive oxygen species (ROS) generation ability. The compound has high ROS yield, good optical stability and biocompatibility, can specifically target A beta aggregate, realizes photodynamic oxidative degradation, and provides a novel potential tool for treatment of Alzheimer's disease.

The invention provides a lipoprotein subtype detection kit as well as a preparation method and application thereof, and belongs to the technical field of biological detection.The separation gel of the kit is mixed with BODIPY 505 / 515, so that dyeing is not needed during detection, direct sample loading electrophoresis can be realized, the operation step flow is reduced, the operation time is shortened, and the detection sensitivity is improved; besides, the N, N-bisacryloyl piperazine is mixed in the separation gel and the concentrated gel, the gel deformation and trailing phenomena in the migration process are reduced by utilizing the rigidity of the N, N-bisacryloyl piperazine gel, the resolution ratio is remarkably improved, and the detection stability and repeatability can be improved; the detection kit provided by the invention has the advantages of short detection operation time, high detection sensitivity, high resolution and good stability and repeatability.

The invention discloses a C60-BODIPY triplet photosensitizer as well as a preparation method and photodynamic antibacterial application thereof. In the preparation process, a fullerene pyrrole ring compound and a BODIPY molecule are connected together through a benzene bridge group, and two ends of a bridge bond are respectively connected to a C atom on a fullerene pyrrole ring and a 6th site of the BODIPY molecule; a BODIPY-C60 binary molecule is formed; the preparation method comprises the following steps: reacting 9-anthracene formaldehyde with 2, 4-dimethyl pyrrole to generate a boron-dipyrromethene molecule of which the meso position is substituted by 9-anthryl, brominating the boron-dipyrromethene molecule at the 6 position by N-bromosuccinimide, coupling the boron-dipyrromethene molecule with p-formylphenylboronic acid, and carrying out Prato reaction on the coupled boron-dipyrromethene molecule with C60 and N-methylglycine to prepare the BODIPY-C60 binary triplet photosensitizer. The triplet photosensitizer has excellent photodynamic activity and relatively high reactive oxygen quantum yield, and can effectively kill bacteria.

The invention belongs to the technical field of fluorescent probes, and discloses a fluorescent probe based on BODIPY targeted lipid droplets and application of the fluorescent probe. The structural formula of the fluorescent probe for targeting the lipid droplets is as follows: # imgabs0 # is as follows: due to strong electron withdrawing capability and relatively large steric hindrance of ester groups, the ester groups of the probe can rotate in an excited state, so that energy is lost through non-radiative transition, and fluorescence quenching is caused. The ester group of the probe can rotate in an excited state due to the strong electron withdrawing capability and large steric hindrance of the ester group, so that energy is lost through non-radiative transition, and fluorescence quenching is caused. And due to the introduction of the ester group, the fat solubility of the BODIPY dye is further enhanced, so that the lipid droplet targeting property of the probe is effectively improved, and no-wash imaging of lipid droplets is realized.

The invention relates to a preparation method and application of a BODIPY oligomer NIR-II nano fluorescent probe, a BODIPY tetramer capable of being used for NIR-II fluorescence imaging is prepared through a Stile coupling reaction, then the water solubility and biocompatibility are improved through covalent connection of polyethylene glycol (PEG) with the molecular weight of 5000, the PEGylated fluorescent probe has excellent photothermal conversion capacity under 980 nm laser excitation, and the fluorescence probe can be used for fluorescence imaging of NIR-II. The material has ablation and killing effects on tumors, and shows a good photo-thermal treatment effect. Moreover, the probe has no obvious dark toxicity, can clearly display the blood vessels of the whole body of the mouse and the blood vessels at the tumor position in a living body, and can be enriched at the tumor position through high permeability and retention (EPR) effect. The probe prepared by the preparation method disclosed by the invention realizes NIR-II fluorescence imaging guided tumor photothermal therapy and has a relatively good application prospect.

The invention discloses a preparation method of a near-infrared two-region BODIPY dye for marking a biological membrane, and relates to the technical field of biological medicines. The invention aims to solve the technical problems of difficult synthesis, more steps and slower cell membrane labeling speed of the existing cell membrane labeling fluorescent molecules. The method comprises the following steps: by taking a near-infrared two-region aza-BODIPY dye as a main body structure, introducing an alkyl chain and hydrophilic sulfonate or quaternary ammonium salt on a molecular structure, and modifying and coupling to obtain BMP1, BMP2 and BMP3. According to the near-infrared two-region aza-Bodipy dye and the preparation method thereof, a series of BMP1, BMP2 and BMP3 are synthesized, and the near-infrared two-region aza-Bodipy dye is excellent in water solubility. The fluorescence brightness of the three materials before and after being combined with the lipidosome reaches more than 10 times, and the BMP3 material has more excellent hydrophilic performance, does not need DMSO to assist dissolution, can be better combined with the lipidosome, has larger change in fluorescence intensity before and after, and can better become a marking dye of a biological membrane structure material. The near-infrared two-region BODIPY dye prepared by the preparation method disclosed by the invention is used for marking a biomass film.

The invention belongs to the technical field of singlet oxygen generation, and discloses an efficient singlet oxygen generation photosensitizer based on nitrogenous aliphatic ring size regulation and a theoretical calculation design method. A donor is introduced to the meso site of stilbene-BODIPY, the ring tension of the stilbene-BODIPY is effectively changed by adjusting the size of a nitrogen-containing ring, and the larger the ring tension is, the more unstable the molecule is, so that the oxidation potential of the donor is reduced, and the electron donating ability of the stilbene-BODIPY is further improved. The donor with stronger electron donating ability can obviously improve the intersystem crossing efficiency of photosensitizer molecules, thereby improving the quantum yield of singlet oxygen. According to the donor designed by the invention, the electron donating capability of the donor can be enhanced by adjusting the size of the nitrogen-containing aliphatic ring, the spin-orbit coupling is increased, and intersystem crossing is promoted. The calculation result shows that the photosensitizer has lower oxidation potential, smaller single triplet state energy gap, larger spin-orbit coupling coefficient and higher intersystem crossing rate, and shows more excellent potential in the field of singlet oxygen generation.

The present invention belongs to the technical field of fluorescent materials, and in particular to a kind of BODIPY sodium pyridine disulfonate fluorescent probe and its synthesis method and application. The synthesis method of the fluorescent probe is simple, low cost, high sensitivity, good selectivity, strong stability, and wide detection range; by the combination of iron ions to sulfonate and the quenching of fluorescent probes, there is also the response of pyrrole to pH, the iron ion content in the water medium is detected and the pH changes are responded to. When the probe is 6.59 and 4.32 in pH, the detection limits of iron ions are 0.037μM and 0.034μM respectively, and between 6.0μM~58.0μM, the detection of iron ions is in a good linear relationship, and is sensitive to pH values ​​within the range of 1.96-6.59. The response to pH and the detection of iron ions both achieve obvious polychromatic changes, and have great potential in detecting iron ions.

The invention discloses an aza-BODIPY biomedical phototherapy agent taking oxajulolidine as a donor and a preparation method thereof, and relates to a medical phototherapy agent for treating brain glioma and a preparation method thereof, and the prepared compound is prepared by introducing an oxajulolidine fragment with electron donating property into a key position of an aza-BODIPY skeleton, so that the aza-BODIPY biomedical phototherapy agent is obtained. The donor-acceptor type molecular near-infrared phototherapy agent with a new structure is constructed, has good near-infrared absorption and emission performance and excellent stability, and shows a remarkable effect in the field of cancer photodynamic (PDT)-photothermal (PTT) synergistic treatment. The structural categories of the near-infrared aza-BODIPY biomolecules are enriched, and a new molecular platform is provided for expansion and application of the near-infrared aza-BODIPY biomolecules in the fields of biological imaging, tumor diagnosis and treatment, functional materials and the like.

The invention belongs to the technical field of photodynamic therapy, and particularly relates to a BODIPY compound, a preparation method and application of the BODIPY compound as a photosensitizer. The invention provides a series of novel-structure small molecule compound photosensitizers which take BODIPY dimers as basic frameworks and are pure I-type photodynamic. Under the combined action of a heavy atom introduced at a specific position, 2, 4, 6-trimethylphenyl and a defined structure R group, the yield of active oxygen is improved, and the regulation and control of the pure I-type photosensitizer are performed by regulating and controlling the energy level. Compared with a common photosensitizer molecule indocyanine green (ICG), the active oxygen yield is about 50 times that of ICG, higher photo-thermal stability is achieved, the applicability of a photodynamic reagent can be remarkably improved, the preparation method is simple, the reaction efficiency is high, the yield is high, and good industrial application prospects are achieved.

The invention discloses a photosensitizer for endogenous hydrogen sulfide activation and visible light excitation as well as a preparation method and application thereof, and relates to the technical field of medical photosensitizers. According to the photosensitizer provided by the invention, BA and NIS react to obtain a BODIPY compound I2BA substituted by double atoms I, so that the intersystem crossing capability is enhanced, and the yield of active oxygen is increased; a target photosensitizer is obtained by introducing a tetraazobenzene ring Cyclone into the para-position of a benzene ring and combining copper ions Cu < 2 + >. The prepared photosensitizer has good light stability and water solubility, can be activated by endogenous hydrogen sulfide in cancer cells, can generate singlet oxygen (1O2) under the irradiation of green light (520 nm), shows excellent photodynamic activity to tumor cells and low dark toxicity to normal cells, has a high photodynamic activity index (PI value), and can be used as a photosensitizer for cancer cells. The compound is successfully used for photodynamic inhibition and elimination of tumors on HCT116 tumor-bearing mice.

The invention belongs to the technical field of organic synthesis, and particularly discloses a near-infrared organic amine BODIPY fluorescent probe capable of recognizing A beta fibers with high sensitivity and a preparation method and application thereof.The near-infrared organic amine BODIPY fluorescent probe is synthesized by enabling para-organic amine substituted benzaldehyde and BODIPY fluorescent dye to be subjected to a Knoevenagel condensation reaction; according to the present invention, the synthesized organic amine BODIPY compound can be combined with diphenylalanine dipeptide so as to achieve the selective recognition of the Abeta fiber in the hippocampus, the organic amine is combined with the BODIPY fluorescent dye, such that the optical property of the BODIPY can be effectively regulated due to the strong electron supply ability and the low steric hindrance so as to achieve the selective recognition of the Abeta fiber in the hippocampus; and the sensitivity and the performance in AD application are improved. The enhanced signal response is helpful for realizing the rapid identification of the A beta fiber, and provides a potential strategy for the prevention and treatment of AD (Alzheimer's disease).

The present invention discloses a BODIPY-based ratiometric fluorescent probe for detecting sulfite, its preparation method, and application. The fluorescent probe is 2,8-bis(2-(benzothiazol-2-yl)-2-cyanovinyl)-10-(furan-2-yl)-1,3,7,9-tetramethyl-5H-dipyrroledifluoroborane complex. The present invention utilizes 2,8-diformyl-10-(furan-2-yl)-1,3,7,9-tetramethyl-dipyrroledifluoroborane as a raw material, and carries out a condensation reaction with 2-(benzothiazol-2-yl)acetonitrile to obtain the compound 2,8-bis(2-(benzothiazol-2-yl)-2-cyanovinyl)-10-(furan-2-yl)-1,3,7,9-tetramethyl-5H-dipyrroledifluoroborane complex (abbreviated as BODIPY-DBC). When a solution of the compound BODIPY‑DBC reacts with sulfite, the solution changes color from purple to yellow under sunlight; under ultraviolet light at a wavelength of 365 nm, the solution's fluorescence changes from orange to green. BODIPY‑DBC can sensitively detect sulfite content in solutions, with high sensitivity (detection limit of 33.12 nM), fast response, good selectivity, and a wide detection range. It holds great promise as a fluorescent probe for sulfite detection.

The present invention belongs to the technical field of in vitro cell differentiation. The present invention provides a method, composition and application for separation, identification and adipogenic differentiation of mammalian adipocytes. The mechanical method combined with collagenase digestion method is used to successfully separate and obtain mammalian adipocytes. Immunofluorescence technology is used to identify the obtained adipocytes. The adipogenic differentiation method of adipocytes is explored by a combination of multiple adipogenic induction factors. The differentiated mature adipocytes are identified by Oil Red O staining, BODIPY staining, triglyceride (TAG) content determination and / or Western blot technology. The results show that the adipogenic differentiation method of the present invention has good beneficial effects, is an ideal method for studying adipocyte differentiation, and has important application value in the fields of animal husbandry, biomedicine and biological meat cultivation.

The invention discloses a high-activity BODIPY type photosensitizer targeting double organelles as well as a preparation method and application of the high-activity BODIPY type photosensitizer, and relates to the technical field of medical photosensitizers. The high-activity BODIPY type photosensitizer is prepared by the following steps: reacting 2, 4-dimethyl pyrrole with 4-bromobutyryl chloride to obtain a compound Br-BY containing carboxyl, then reacting with morpholine to obtain a morpholine substituted compound Mor-BY, and finally reacting with N-iodosuccinimide (NIS) to obtain a single atom I substituted BODIPY compound Mor-IBY, namely the target photosensitizer. The photosensitizer prepared by the invention can target mitochondria and lysosome in cancer cells at the same time, and can be excited by visible light; the compound has good water solubility, can generate a large amount of reactive oxygen species (ROS) under irradiation of green light (520 nm), shows excellent photodynamic activity to tumor cells, and has low toxicity to normal cells.

The invention discloses a BODIPY derivative, a nano preparation, a corresponding preparation method and application, and the BODIPY derivative is prepared by taking BODIPY as a mother nucleus and adjusting substituent groups and expanding a conjugated system. According to the BODIPY derivative and the nano preparation, the emission wavelength can extend to an NIR-II region, and the BODIPY derivative and the nano preparation can be used for preparing a medicine for inhibiting tumor cell growth or a near-infrared two-region fluorescence imaging agent.

The invention discloses a novel BODIPY-based near-infrared open-type fluorescent probe for detecting hypochlorous acid as well as a preparation method and application of the novel BODIPY-based near-infrared open-type fluorescent probe. The fluorescent probe is (5, 5-difluoro-1, 3, 9-trimethyl-7-(4-sulfur morpholinyl styryl)-5H-dipyrrolo-diazaborolo-penta [10] alkene-10-yl)-4-phenol, which is abbreviated as BOD-Y. The invention also discloses a preparation method of the fluorescent probe. The probe BOD-Y can specifically recognize hypochlorous acid, the color of a probe BOD-Y solution added with hypochlorous acid is rapidly changed from green to blue under sunlight, and the fluorescence is also changed from colorless to strong red fluorescence. The detection limit of the probe on hypochlorous acid is as low as 21nM, the probe shows a good linear relation within 0-35 [mu] M, and the response time is within 13 seconds. The probe shows good selectivity on hypochlorous acid, and is not influenced and interfered by other anions, cations, biological mercaptan, active oxygen and the like.

The present invention belongs to the field of photodynamic therapy technology, and more particularly to a BODIPY compound, a preparation method and its use as a photosensitizer. The present invention provides a series of novel small molecule compound photosensitizers with BODIPY dimer as basic skeleton and pure type I photodynamic. By the combined action of heavy atoms, 2,4,6-trimethylphenyl groups and limited structure R groups introduced at specific positions, the reactive oxygen species yield is increased, and the regulation of pure type I photosensitizer is carried out by regulating energy levels. Compared with common photosensitizer molecule indocyanine green (ICG), the reactive oxygen species yield is about 50 times that of ICG, has higher photothermal stability, can significantly increase the applicability of photodynamic agents, and the preparation method is simple, the reaction efficiency is high, the yield is high, and there is good industrial application prospect.

This invention discloses a novel iron-based supramolecular catalyst and its preparation method. A fluoroboron pyrrole (Bodipy) organic photosensitizer with strong visible light absorption and a long excited-state lifetime is covalently coupled to an inexpensive iron-based tetrapyridine catalyst via a click reaction, shortening the distance between the photosensitizer and the catalyst to construct a non-precious metal supramolecular photocatalytic system with strong visible light absorption. Using 1,3-dimethylbenzimidazole as a sacrificial agent, the catalyst exhibits high catalytic activity and selectivity in photocatalytic carbon dioxide reduction. The reaction system is low-cost and has promising application prospects.

The invention discloses an imidazolyl BODIPY derivative viscosity fluorescent probe with an aggregation-induced fluorescence enhancement (AIEE) effect and application thereof, the imidazolyl BODIPY derivative viscosity fluorescent probe is realized by the following method: taking a 2-formaldehyde BODIPY derivative (I), diphenyl ethanedione and aniline as raw materials, and carrying out Debus-Radziszewski imidazole synthesis reaction under the catalytic action of ammonium acetate, and the chemical structural formula of the imidazolyl BODIPY derivative viscosity fluorescent probe is as shown in formula (II). The preparation method is simple in reaction step, mild in reaction condition, simple and convenient to separate and purify and high in yield; the fluorescent probe has an aggregation-induced fluorescence enhancement effect, has high responsiveness to viscosity, can be used for detecting viscosity change in a solution and cells, and can provide an effective detection method for researching physiological action of viscosity in cells.

The invention discloses a near-infrared ratio type fluorescent probe for rapidly and reversibly detecting histamine (HA), a preparation method of the fluorescent probe and application of the fluorescent probe in dynamic cell imaging, and belongs to the technical field of fluorescence imaging and biosensing. The preparation method comprises the following specific steps: synthesizing aza-BODIPY molecules (1a-1d, 2a-2d) with different halogenations, and meanwhile, connecting the aza-BODIPY molecules with hydroxyl groups at 3 and 5 sites with a hydrophilic PEG (Polyethylene Glycol) fragment and halogen to obtain an HA probe HAPCyto with good water solubility; in addition, the hydroxyl aza-BODIPY molecules are continuously subjected to substitution, halogenation and hydrolysis reaction to obtain carboxyl-containing aza-BODIPY molecules, then the aza-BODIPY molecules are subjected to amidation reaction by utilizing the site, and different organic fragments are respectively connected to obtain a cell membrane targeted HA probe HAPPM, a golgi apparatus targeted HA probe HAPGA and a HaloTag HA fluorescent probe HAPHaloTag. When HA exists in a solution, the developed probe can realize rapid reversible detection of the near-infrared ratio of histamine, also shows good reversible property in mast cells, and can realize dynamic monitoring of histamine in cells.

The invention relates to the technical field of chemiluminescence probes, in particular to a synthesis method and application of a boron dipyrromethene framework near-infrared two-region chemiluminescence probe based on X-ray activation, and the chemical structural formula of the chemiluminescence probe is shown in the specification. A novel BODIPY compound which is high in quantum yield and has a strong or narrow emission band is used as a chemiluminescence substrate for a core framework, a core framework of an electron withdrawing group with longer emission wavelength, an electron donating group and two molecules with larger wavelength overlap ratio are subjected to one-time CERT effect to be efficiently combined into a single molecule, and 1,050 nm chemiluminescence which is higher than 970 nm is emitted.