2292 results about "Porphyrin" patented technology

An acne treatment system, device and method includes optical visualization means for identifying areas of skin colonized by the P. acnes bacteria, and further comprises methods, techniques and apparatus for the reduction or elimination of such colonies through the use of light of a power density and wavelength configured to be absorbed by porphyrins produced by the bacteria, resulting in a quenching. Various alternative embodiments are disclosed, including eye safe embodiments, embodiments in which a treatment regimen is provided on a disposable cartridge, embodiments in which the authenticity of the cartridge is verified to ensure proper operation, as well as others.

A non-aqueous air battery of the present invention includes a negative electrode for which a material which absorbs and releases lithium ions is used as a negative electrode active material, a positive electrode for which oxygen is used as a positive electrode active material, and a non-aqueous electrolyte disposed between the negative electrode and the positive electrode. The positive electrode contains a donor-acceptor molecule in which an electron-donating donor (D) having a porphyrin ring is connected to an electron-accepting acceptor (A) composed of a fullerene derivative, with a conductive spacer therebetween. An example of the donor-acceptor molecule is triphenylporphyrinyl bithienyl N-methylpyrrolidino[60]fullerene.

Liposomal pharmaceutical formulations incorporating porphyrin photosensitizers useful for photodynamic therapy or diagnosis of malignant cells. The liposomal formulations comprise a porphyrin photosensitizer, particularly the hydro-mono benzoporphyrins (BPD) having light absorption maxima in the range of 670-780 nanometers, a disaccharide or polysaccharide and one or more phospholipids.

The invention discloses a method and a device for detecting the freshness of fish based on olfaction visualization, which is characterized in that a computer is connected with a constant temperature control room and a scanner; a visual gas sensor array, the scanner, a reaction room and a sample room are arranged inside the constant temperature control room; detected gas diffused from a detected fish sample is in contact with the visual gas sensor array; the detected gas reacts with a porphyrins sensor, a pH indicator sensor or a solvation chromotropic dye sensor arranged in the visual gas sensor array; images before and after the reaction are collected by the scanner and input into the computer; and the freshness of the detected fish sample is determined according to the correlation between the color change of the three sensors and the variety and the concentration of the detected gas. The invention can ensure that the extraction quantity of characteristic values is reduced by determining the selection of the sensor type and the characteristic values; the synthesis course is simple, and the use quantity of the sensors is less; the gas can be fully contact with the sensors; the detection by human eyes can be utilized; and the use of the device is simple and convenient; the detection time only needs 3 to 5 minutes.

Conjugates of porphyrin, chlorophyll and bacteriochlorophyll photosensitizers with RGD-containing peptides or RGD peptidomimetics are provided that are useful for photodynamic therapy (PDT), particularly vascular-targeted PDT (VTP), of tumors and normeoplastic vascular diseases such as age-related macular degeneration, and for diagnosis of tumors by different techniques.

Conjugates of porphyrin, chlorophyll and bacteriochlorophyll photosensitizers with RGD-containing peptides or RGD peptidomimetics are provided that are useful for photodynamic therapy (PDT), particularly vascular-targeted PDT (VTP), of tumors and nonneoplastic vascular diseases such as age-related macular degeneration, and for diagnosis of tumors by different techniques.

Liposomal pharmaceutical formulations incorporating porphyrin photosensitizers useful for photodynamic therapy or diagnosis of malignant cells. The liposomal formulations comprise a porphyrin photosensitizer, particularly the hydro-mono benzoporphyrine (BPD) having light absorption maxima in the range of 670-780 nanometers, a disaccharide or polysaccharide and one or more phospholipids.

A series of novel positively-charged porphyrins is disclosed which exhibit a markedly increased efficiency in photosensitizing both Gram-positive and Gram-negative bacteria to the action of visible light, causing death to such bacteria when present at much lower concentrations and much shorter irradiation times than those porphyrins taught in the prior art. These porphyrins are characterized by the presence of up to four positive charges in the peripheral substituents and at least one hydrophobic tail comprising between 6 and 22 carbons inclusive, originating at one or more of the charged sites.

A broad class of photosensitive compounds having enhanced in vivo target tissue selectivity and versatility in photodynamic therapy. Many furocoumarin compounds, such as psoralens, exhibit cytostatic activity when photoactivated but exhibit little in vivo specificity for selectively accumulating in any particular target tissue such as atheromatous plaques. Reactive Oxygen Producing Photosensitizers ("ROPPs") are photoactivatable compounds having an affinity for hyperproliferating cells (such as atheromatous plaque cells), which when photoactivated, produce cytotoxic reaction products. The photoactivity of a ROPP, such as a porphyrin, may be reduced by metalating the porphyrin while the selective affinity of the metalized ROPP for hyperproliferating tissue remains substantially unchanged. By linking a furocoumarin compound to a ROPP to form a F-ROPP, the cytostatic properties of the furocoumarin portion of the F-ROPP can be exploited while the selective affinity of the ROPP portion of the compound for hyperproliferating cells such as atheromatous plaque provides enhanced tissue selectivity without cytotoxicity. In vivo, certain F-ROPPs may be forced to selectively accumulate in a target tissue by illuminating only the target tissue with light having a wavelength operable for photoactivating the F portion of the F-ROPP thereby causing the F-ROPP to either form a monoadduct with or crosslink the cellular DNA in the target tissue. Light of a second wavelength can then be delivered to the target tissue to photoactivate the ROPP portion causing further interference with cellular activity.

The invention relates to a new process in which under the catalytic action of metal porphyrin the cyclohexane can be selectively oxdated by air and made into cyclohexanol and cyclohexanone. Under the condition of 2-10 atm air, reaction temp. is 125-150 deg.C, it selects and uses micro-oxo double metal porphyrin and single metal porphyrin or their solid carrier as main catalyst, and uses transition metal salt or oxide as co-catalyst, the metal porphyrin can high-effectively and high-selectively catalyze oxidation of cyclohexane by using air in the biological concentratino as biological enzyme. The dose of metal porphyrin is small and said metal porphyrin can be repeatedly used, and said catalyst dose also is small, its catalystic effect is good, said catalyst can be used for making homogeneous catalysis, and after it is solid-carried, it also can be used for making heterogeneous catalysis.

The invention belongs to the technical field of catalysis and relates to a method for preparing a monatomic cobalt catalyst by roasting silicon dioxide pellets and immobilizing metalloporphyrin. The method is realized by adopting the following technical scheme: namely stirring and dispersing nano silicon dioxide particles, dropwise adding 3-aminopropyl triethoxy silane, so as to obtain amino modified SiO2 pellets, then linking monocarboxyl metalloporphyrin (CoTPCPP) onto an amino modified SiO2 carrier through organic complexing, carbonizing porphyrin through high-temperature calcination in an inert atmosphere, and loading highly dispersed cobalt atoms onto the amino modified SiO2 pellets, thus an amino modified silicon dioxide pellet loaded monatomic cobalt catalyst is obtained. The monatomic dispersion catalyst has high catalytic activity and stability on a molecular oxygen selective ethylbenzene catalytic oxidation reaction in absence of solvent; meanwhile, a preparation method is simple, and product quality can be easily controlled, so that the monatomic dispersion catalyst is applicable to the fields of alkane selective oxidation reactions and synthesis of medical intermediates.

A process for producing a metalloporphyrin containing a transition metal inserted into the porphyrin ring which comprises dissolving a porphyrin compound and a transition metal salt each in an independent solvent, combining the solutions, and carrying out the reaction in the presence of a basic substance. By this process a metalloporphyrin containing a transition metal inserted into the porphyrin ring can be synthesized easily under mild conditions and with high selectivity.

A process for preparing cyclohexanol, cyclohexanone and adipic acid by catalytic oxidization of cyclohexane under existance of metallic porphyrin catalyst and a certain temp and pressure through combination of different reactors is disclosed. Its advantages are high single-pass conversion rate of cyclohexane and total output rate, low energy consumption and cost, and no need of cyclohexanol or acetone solvent and cocatalyst.

“A label-free imaging method to monitor stem cell metabolism discriminates different states of stem cell as they differentiate in a living tissues. We use intrinsic fluorescence biomarkers and the phasor approach to Fluorescence Lifetime Imaging Microscopy (FLIM). We identify and map intrinsic fluorophores such as collagen, retinol, retinoic acid, flavins, nicotinamide adenine dinucleotide (NADH) and porphyrin. We measure the phasor values of germ cells in C. Elegans germ line. Their metabolic fingerprint cluster according to their differentiation state, reflecting changes in FAD concentration and NADH binding during the differentiation pathway. The phasor approach to lifetime imaging provides a label-free, fit-free and sensitive method to identify different metabolic state of cells during differentiation, to sense small changes in the redox state of cells and may identify symmetric and asymmetric divisions and predict cell fate.”

The present invention provides methods, compounds, and compositions for the synthesis of light harvesting arrays, such arrays comprising: (a) a first substrate comprising a first electrode; and (b) a layer of light harvesting rods electrically coupled to said first electrode, each of said light harvesting rods comprising a polymer of Formula I:

X¹X^m+1)_m  (I)

wherein m is at least 1; X¹ is a charge separation group, and X² through X^m+1 are chromophores. At least one of X² through X^m+1 has at least one perylene group coupled thereto.

The present invention relates to a new process for preparing adipic acid by air oxidating cyclohexane, cyclohexanol, cyclohexanone and cyclohexene or mixture of cyclohexanol and cyclohexanone under the catalysis of metal porphyrin. Under the condition of 1-20 atm air and reaction temp. is 50-200 deg.C it can select and use mu-oxidized metal porphyrin and monometal porphyrin or their fixed carrier material as catalyst independently, also can select and use metal porphyrin or their fixed carrier material as main catalyst, and use transition metal salt or oxide as co-catalyst. The metal porphyrin like biological-enzyme can high-effectively and high-selectivity catalyze air under the biologicae concentration to directly oxidate the cyclohexane into adipic acid. Said invented dose of metal porphyrin is less, and its catalytic effect is good, it can make homogeneous catalysis, also can make heterogeneous catalysis after the carrier is fixed.

The invention relates to a method for recycling vanadium and molybdenum from a waste petroleum catalyst, and belongs to the technical field of petrochemical industry. The method comprises air-burning and ball-removing, ball-milling, soda roasting-water leaching, aluminum removing, molybdenum precipitating and enriching molybdenum by ion exchange. The method specifically comprises the following steps: firstly, igniting sticky oil in the waste catalyst in air to burn carbon and oils in the waste catalyst; then, oxidizing the vanadium and nickel in the forms of porphyrin compounds in the waste catalyst into vanadium oxide and nickel oxide, converting most of the molybdenum into molybdenum oxide, wherein the waste catalyst subjected to air-burning and oil-removing is more beneficial for crushing, and the crushed waste catalyst and a certain proportion of sodium carbonate are mixed, and are roasted at a high temperature; leaching roasted materials by hot water, dissolving sodium salts of the vanadium and the molybdenum into water to obtain a solution, filtering the solution, introducing the filtered solution into a leaching solution, introducing a little aluminum into the leaching solution, regulating the pH value of the solution to remove aluminum; regulating the pH value of the solution to 8-9, adding ammonium chloride, precipitating and separating out the vanadium in the form of ammonium vanadate; and concentrating vanadium-precipitated solution by adopting an ion exchange process and enriching an ammonium molybdate solution.

The present invention is an apparatus for detecting the presence of exhaled ammonia and a method for using the same to detect the present of a Helicobacter in a subject. The apparatus is composed of a breath capture device having a sensor plate with at least one selected Lewis acid dye (e.g., a metal ion-containing dye such as a metalloporphyrin) deposited thereon which produces a detectable spectral, transmission or reflectance response in the presence of ammonia.

The invention discloses a preparation method of TiO2/porphyrin/MOFs (metal-organic frameworks) ultra-thin heteroplasmon, and belongs to the technical field of inorganic-organic composite functional material preparation. A TiO2 ultra-thin nano-sheet serves as a template, a porphyrin compound is anchored on the surface of the TiO2 ultra-thin nano-sheet by functional groups such as carboxyl and hydroxy on the periphery of the porphyrin compound, and MOFs wrap an outer layer of the porphyrin compound by means of metal-organic framework layer-by-layer self-assembly through residual functional groups such as carboxyl and hydroxy on the periphery of the porphyrin compound to obtain the TiO2/porphyrin/MOFs ultra-thin heteroplasmon with efficient and stable catalytic activity. The preparation method has the advantages that ultra-thin heteroplasmon catalysis area/light absorption area/adsorption area layer construction and functional integration are creatively performed by the aid of TiO2, porphyrin and the MOFs, a novel catalytic material with excellent performance for photocatalytic reduction of carbon dioxide is developed, and the performance of the TiO2/porphyrin/MOFs ultra-thin heteroplasmon is optimized based on adjustable structural and functional characteristics of porphyrin and MOFs materials.

The invention belongs to the fields of a metal ion battery and a super capacitor, and concretely relates to a porphyrin two-dimension covalent organic framework conjugated polymer, and a preparation method and an application thereof. A structural formula of the porphyrin two-dimension covalent organic framework conjugated polymer is shown in formula (I), wherein m=0 or 1, n=0 or 1. The porphyrin two-dimension covalent organic framework conjugated polymer can be directly used as a cathode material of the metal ion battery and the super capacitor, so that the cathode material shows excellent properties, which include good cycle performance, high specific capacity and excellent rate capability; the polymer powder also has the same effects and properties, and can be used as a cathode material of other metal ion (sodium, potassium, zinc, nickel, etc.) batteries and super capacitors.