12results about "Diarylmethane dyes" patented technology

The invention belongs to the technical field of dyes, and particularly relates to a preparation method of a blue dye. Aromatic hydrocarbon and amine are used as substrates to react at 60-160 DEG C under the catalytic condition of a copper-based catalyst to obtain the triarylmethane dye as shown in the formula (I), according to the method, a noble metal Pd catalyst is replaced by a cheap metal Cu catalyst, so that the reaction cost is lower, the operability is higher, and the yield is more excellent.

The present invention relates to an indeno-naphthopyran compound represented by the following formula (I). In reference to formula (I), m, n, and R4-R7 are as described in the specification. Further referring to formula (I), R1 is an aryl group substituted by at least one perfluoroalkyl group, or a heteroaryl group substituted by at least one perfluoroalkyl group; r2 is an alkoxy group; and R3 is an alkoxy group, an amino group, or a substituted or unsubstituted nitrogen-containing heterocyclic ring, with the proviso that when R3 is not an alkoxy group, R3 is covalently bonded to position-7 via a nitrogen atom. The present invention also relates to a photochromic composition and a photochromic article comprising the indeno-naphthopyran compound represented by formula (I). (I)

Provided in the present application are a kind of aza[3.2.1] bridged ring substituted fluorescent dye, and a preparation method therefor and the use thereof. In this kind of fluorescent dye, the aza [3.2.1] bridged ring is used as the substituent of the fluorescent dye, which significantly improves the brightness and light stability of the fluorescent dye, completely avoids a blue shift of light of the dye after long-term illumination, and can also effectively improve the water solubility of the fluorescent dye and maintains good cell membrane permeability thereof. Also provided in the present application are embodiments of functionalized derivatives of this kind of dye for single-molecule imaging, confocal imaging and super-resolution imaging in biological samples.

A latent additive represented by general formula (1): wherein A is a 5- or 6-membered aromatic or heterocyclic ring; R1 and R2 are each hydrogen, halogen, cyano, hydroxyl, nitro, carboxyl, optionally substituted C1-C40 alkyl, C6-C20 aryl, C7-C20 arylalkyl, or C2-C20 heterocyclic ring-containing group; and R4 is C1-C20 alkyl, C2-C20 alkenyl, C6-C20 aryl, C7-C20 arylalkyl, C2-C20 heterocyclic ring-containing group, or trialkylsilyl.

The present invention provides: a photochromic curable composition which contains (A) a (meth)acrylate composition that contains from 24 to 100% by mass of a polyfunctional (meth)acrylate which has three or more (meth)acryloyl groups in each molecule and (B) a photochromic compound that is obtained by bonding at least one specific naphthopyran to a long-chain group having a number average molecular weight of from 300 to 10,000; and a photochromic optical article which is obtained by polymerizing this photochromic curable composition.

The present invention relates to indenonaphthopyran compounds represented by the following Formula (I). With reference to Formula (I), m, n, and R4-R7 are as described in the specification. With further reference to Formula (I), R1 is aryl substituted with at least one perfluoroalkyl group, or heteroaryl substituted with at least one perfluoroalkyl group; R2 is alkoxy; and R3 is alkoxy, amino, or substituted or unsubstituted nitrogen-containing heterocycle, provided that when R3 is other than alkoxy, R3 is covalently bonded to position-7 by a nitrogen atom. The present invention also relates to photochromic compositions and photochromic articles that include indenonaphthopyran compounds represented by Formula (I).

The present disclosure provides an aza[3.2.1]bridged ring substituted fluorescent dye and a preparation method and use thereof. According to the fluorescent dye, by adopting an aza[3.2.1]bridged ring as a substituent of the fluorescent dye, not only are the brightness and photostability of the fluorescent dye obviously improved, but also the phenomenon of spectral blue shift caused by irradiation of the dye for a long time is completely avoided. Meanwhile, the water solubility of the fluorescent dye can be effectively improved, and good membrane permeability of the fluorescent dye is maintained. The present disclosure further provides embodiments of functionalized derivatives of the dye in single molecule imaging, confocal imaging and super-resolution imaging of biological samples.

The present invention relates to rhodamine-type fluorophores being present in two states, a cell-permeable non-florescent form and a fluorescent form. The present invention also relates to use of the fluorophores in staining and live cell fluorescence imaging. The compounds have general formula (10) or the general formula (10′).

To provide a thermally discoloring microcapsule pigment having excellent color development of a drawn line during writing and decolorization property that does not leave a written trace on a paper surface even by thermal erasure due to friction heat and has excellent thermal discoloration property and a writing ink composition containing the microcapsule pigment.SOLUTION: A microcapsule pigment of the present invention is characterized in that at least one leuco pigment, a discoloration temperature adjusting agent, and at least one selected from diphenylacetic acid, 3,3-diphenylpropionic acid and triphenylacetic acid as a color development agent. A writing ink composition of the present invention is characterized in that the microcapsule pigment having the above described structure is contained.SELECTED DRAWING: None

Photochromic molecules denominated FC-YNAPHT or FC-RNAPHT usable as portions of a cosmetic ingredient, coloured cosmetic ingredients for cosmetic products changing colour when irradiated by ultraviolet light (UV, preferably UV-A). (Fomula AA & Formula BB) (AA) (BB) Method for the synthesis of said photochromic molecules. Monosubstituted and disubstituted transesterification product between FC-YNAPHT or FC-RNAPHT and a polymer or cosmetic oil having the aim to increase the molecular weight of the photochromic molecule. (Fomula CC & Formula DD) (CC) (DD) Method for the transesterification. Cosmetic compositions for make-up containing said photochromic transesterification products, capable of changing colour both per se and when applied to the skin when they are exposed to UV radiation.

The present invention relates to the following formula (I) This relates to the indenonaphthopyrane compound represented by JPEG2026517214000025.jpg60160. With respect to formula (I), m, n and R 4 ~R 7 This is as described herein. Furthermore, with respect to formula (I), R 1 is an aryl or heteroaryl substituted with at least one perfluoroalkyl group, and R 2 is an alkoxy, and R 3 R is an alkoxy, amino, or substituted or unsubstituted nitrogen-containing heterocycle, 3 If R is not an alkoxy, 3 This is conditional on the nitrogen atom being covalently bonded at position 7. The present invention also relates to photochromic compositions and photochromic articles comprising an indenonaphthopyrane compound represented by formula (I).

The present disclosure relates to a novel compound having an antibacterial function against superbacteria and a hypochlorous acid selective detection function, and a composition and a fluorescent sensor which comprise the same, and more particularly to, a novel imidazoline-2-thione based compound, a composition comprising the same, and a fluorescent sensor for bacterial detection and hypochlorous acid selective detection.