10 results about "Merocyanine" patented technology

The present invention discloses a dynamic luminescent system of light-controlled dissipative self-assembly, a preparation method, a reversible logic gate and its application. The system comprises a sulfonic acid merocyanine that self-assembles with a surfactant in acidic water to form a light-controlled dissipative self-assembly system, and then a fluorescent dye is added to obtain the system. The sulfonic acid merocyanine can be photoisomerized to a spiropyran structure at 420±10nm, and then assembled with a surfactant in an acidic aqueous solution at room temperature into a spherical nanoparticle system. At the same time, the assembly system can achieve different dynamic changes in fluorescence by loading different fluorescent dyes. On this basis, a series of reversible logic signal gates that achieve dynamic changes in fluorescence based on different inputs have been developed. The preparation routes of the various light-controlled dissipative self-assembly systems are simple, and the dynamic changes in fluorescence can be achieved by simply changing the self-assembly system or changing the wavelength of the excitation light. This can be used as the design basis for logic signals, and has great application potential in the fields of information transmission and information storage, such as molecular computing and sensing.

The invention therefore relates to the use of (i) one or more merocyanine(s) of formula (3) below and also the E / E or E / Z geometric isomer forms thereof, and the tautomers thereof, the salts thereof, and the solvates thereof such as hydrates, in which formula (3): A is -O- or -NH; R is a C1-C22 alkyl group, a C2-C22 alkenyl group, a C2-C22 alkynyl group, a C3-C22 cycloalkyl group or a C3-C22 cycloalkenyl group, it being possible for said groups to be interrupted by one or more O; for (photo)stabilizing (ii) resveratrol, a derivative thereof and also the geometric isomer forms thereof, the salts thereof and the solvates thereof such as hydrates, or mixtures thereof.

The application discloses a preparation method and application of copper porphyrin merocyanine nanoparticles converted from photodynamic and photothermal effects to chemical dynamic effects. The copper porphyrin merocyanine molecule is prepared through a meso-substitution reaction of hydroxyl copper porphyrin and heptamethine merocyanine, and nanoparticles are formed through co-assembly with distearoyl phosphatidylcholine and distearoyl phosphatidyl ethanolamine-polyethylene glycol. Under light conditions, the copper porphyrin merocyanine nanoparticles have good photodynamic and photothermal effects. During the light process, the gradual degradation of merocyanine leads to the depolymerization of nanoparticles, and the loose structure promotes the opening of the chemical dynamic performance, so that the switching from photodynamic / photothermal effects to chemical dynamic effects is realized. The copper porphyrin merocyanine nanoparticles prepared by the application have good application prospects in the fields of biological tracing, efficient tumor killing and the like.

The invention provides a composition, a resin composition, a liquid composition, a dye compound and an optical material. The composition contains a dye represented by formula 1 and a compound selected from the group consisting of benzotriazole compounds, triazine compounds, benzophenone compounds, merocyanine compounds, cyanine compounds, acrylate compounds, and benzoxazinone compounds. And at least one ultraviolet absorber selected from the group consisting of a benzoxazole compound and a benzodithiol compound. In formula 1, R1 and R2 each independently represent an alkyl group or an aryl group, R3, R4, R5, and R6 each independently represent a hydrogen atom or a substituent, and R5 and R6 may be bonded to each other to form a 6-membered ring.

Use of a merocyanin for photostabilizing resveratrol and / or one of its derivatives. The invention therefore relates to the use of (i) one or more merocyanins of the following formula (3) and their isomeric geometric forms E / E or E / Z, and their tautomers, salts, and solvates such as hydrates: [Formula 3] Formula 3 wherein: A is –O- or –NH; R is a C1-C22 alkyl group, a C2-C22 alkenyl group, a C2-C22 alcinyl group, a C3-C22 cycloalkyl group, or a C3-C22 cycloalkenyl group, said groups being able to be interrupted by one or more O groups, for (photo)stabilizing (ii) resveratrol, one of its derivatives, and their isomeric geometric forms, salts, and solvates such as hydrates or their mixtures.

A cosmetic or dermatological composition comprising a merocyanin, a triazine UV filter, and a polysaccharide modified by hydrophobic chains. The present invention relates to a composition, preferably cosmetic or dermatological, comprising: a) at least one merocyanin of the following formulas (1) or (2): [Formula 1] and [Formula 2]; b) at least one triazine UV filter; and c) at least one polysaccharide modified by hydrophobic chains. The present invention also relates to the use of at least one such merocyanin of formula (1) or (2) to reduce staining of fabrics, particularly clothing, after washing.

Use of a merocyanin for photostabilizing resveratrol and / or one of its derivatives. The invention therefore relates to the use of (i) one or more merocyanins of the following formula (3) and their isomeric geometric forms E / E or E / Z, and their tautomers, salts, and solvates such as hydrates: [Formula 3] Formula 3 wherein: A is –O- or –NH; R is a C1-C22 alkyl group, a C2-C22 alkenyl group, a C2-C22 alcinyl group, a C3-C22 cycloalkyl group, or a C3-C22 cycloalkenyl group, said groups being able to be interrupted by one or more O groups, for (photo)stabilizing (ii) resveratrol, one of its derivatives, and their isomeric geometric forms, salts, and solvates such as hydrates or their mixtures.

The present invention relates to a cosmetic or dermatological composition comprising at least one aqueous phase, at least one merocyanine of formula (3), which will be defined in detail hereinbelow, and at least one compound of formula (I) or (I'), (I), (I') as described hereinbelow, and / or optical isomers thereof, geometrical isomers thereof, and also organic or mineral acid or base salts thereof, and / or solvates thereof such as hydrates.

Functionalized spiropyran-based photo-hydrogels that include at least two different spiropyrans are disclosed herein. The disclosed photo-hydrogels may include two spiropyrans with differing chemical properties. In some variations, the spiropyran-based photo-hydrogel includes two functionalized spiropyrans, including a first functionalized spiropyran having a net positive charge and a second functionalized spiropyran having a net negative charge. The net positive and net negative charges are equal and opposite, such that the spiropyran-based photo-hydrogel has an overall net zero charge. In the absence of light, the spiropyrans are in their corresponding merocyanine forms and the photo-hydrogel has a high degree of aggregation. Irradiation, such as exposure to visible light, causes photo-isomerization of the merocyanines into spiropyrans, resulting in an increase in the amount of swelling of the photo-hydrogel. In some implementations, the disclosed photo-hydrogels may be used in a variety of applications such as light-controlled micropumps, artificial eye muscles, cameras, and drug delivery systems.

The present invention relates to an aqueous cosmetic or dermatological composition comprising: a) at least one merocyanine corresponding to the following formula (3) and also the geometric isomer form thereof, in particular E / E-or E / Z-geometric isomer form: formula (I) wherein: A is-O-or-NH-; r is a C1-C22 alkyl group, a C2-C22 alkenyl group, a C2-C22 alkynyl group, a C3-C22 cycloalkyl group or a C3-C22 cycloalkenyl group, said group being possibly intercalated with one or more O; the amount is less than 3% by weight relative to the total weight of the composition; and b) at least one water-soluble organic UV screening agent.