159 results about "Rhodamine derivative" patented technology

The invention provides a novel rhodamine fluorescence probe, and belongs to the field of function materials. The novel rhodamine fluorescence probe provided by the invention is characterized in that rhodamine B (RhB) is used as a raw material and is modified by using diamine so as to prepare rhodamine lactam, further the rhodamine lactam reacts with maleic anhydride (MAH) and amantadine so as to obtain the rhodamine fluorescence probe, and the novel rhodamine fluorescence probe contains multiple amido functional groups and carbon-carbon double bonds, wherein the multiple amido functional groups can react with metal ions, and the carbon-carbon double bonds can react with Hg<2+>. After the spiral rhodamine lactam compound is combined with heavy metal particles, the protonation of lactam nitrogen atoms can result in the reduction of the charge density of the nitrogen atoms, thus the cracking of a C-N chemical bond at the spiral center is triggered, so as to generate the fluorescence change and the color change. The obtained rhodamine derivative has relatively good recognition capability on mercury ions and iron ions in a water solution, the detection limit of the obtained rhodamine derivative on the iron ions reaches 8.3ppm, and the detection limit of the obtained rhodamine derivative on the mercury ions reaches 4.7ppm. The prepared rhodamine derivative can serve as the fluorescence probe and is widely applied to the fields such as environmental engineering, detection and the like.

The invention discloses visual, portable and quick mercury ion detection test paper and a preparation method and application thereof. The preparation method of the test paper comprises the following steps: firstly preparing rhodamine hydrazide, carrying out etherification and Heck reaction on hydroxyl on filter paper so as to introduce in required isosulfocyanate radical end group, grafting the prepared rhodamine hydrazide onto the filter paper to finally obtain the mercury ion detection test paper. The prepared detection test paper has the advantages that a rhodamine derivative fluorescence probe and the filter paper are chemically bonded, the structure is firm, the reaction speed is high, the detection limit is 10mu m, the selectivity is good, the influences from other various coexisting ions are avoided, the detection environment is an organic-solution-free total aqueous solution system containing mercury ions, the pollution of other organic solvents to the environment is reduced; and under the irradiation of an ultraviolet lamp, the test paper can realize visual detection; the detection measures are convenient and can be performed on site; and therefore, the test paper and the preparation method of the test paper have great application prospect in the field of water pollution caused by mercury ions.

The invention discloses a preparation method and application of a near infrared GSH (glutathione) fluorescent probe. The structural formula of the fluorescent probe is shown as the accompanying drawing. On one hand, the Rhodamine wavelength is increased by 1,3,3-Trimethyl-2-(formylmethylene)indoline, so that the wavelength is prolonged to be 750nm; on the other hand, SH of an analyte and an aldehyde group of the probe take an addition-hydrolysis reaction for realizing GSH, Cys (cysteine) and Hcy(homocysteine) distinguishing. The near infrared GSH fluorescent probe is the first near infrared fluorescent probe which is based on rhodamine derivatives and can efficiently distinguish the GSH, the Cys and the Hcy; the probe shows high sensitivity on the GSH. When the pH value is 6.0 to 8.0, the determination on the GSH by the fluorescent probe is not influenced; the fluorescent probe and the GSH response is fast; the probe cannot be interfered by other biological mercaptan (Cys and Hcy) and other 19 kinds of amino acids; good selectivity is shown. More importantly, the near infrared GSH fluorescent probe can be applied to optical imaging and detection of GSH in cells and tissues.

The invention discloses N-(2,4-dinitrophenyl)-rhodamine B hydrazide and a preparation method and an application of the N-(2,4-dinitrophenyl)-rhodamine B hydrazide. The rhodamine B derivative provided by the invention is N-(2,4-dinitrophenyl)-rhodamine B hydrazide, the structural formula of which is I. The N-(2,4-dinitrophenyl)-rhodamine B hydrazide, is colorless and free from fluorescence, but can selectively react with Cu<2+> ions in chromogenic and fluorescent opening reaction. The colorless substance generates a system with excellent optical performance, so that the detection sensitivity and selectivity of Cu<2+> ions are greatly improved. Therefore, the N-(2,4-dinitrophenyl)-rhodamine B hydrazide is appropriate for high selectivity and high sensitivity detection for the Cu<2+> ions. Detection can be carried out by a light absorption spectrum and a fluorescence spectrum. (FORMULA I).

The invention belongs to the technical field of a functional material, and in particular relates to a modified SBA-15 mesoporous material as well as a preparation method and an application thereof. The mesoporous material is an SBA-15 mesoporous material modified by trimethoxy-[(3-ethylene oxide methox)yl propyl] silane and rhodamine B derivative, and the modified mesoporous material is prepared by the following steps: firstly, substituting silicon hydroxyl of an SBA-15 mesoporous material which is prepared in advance with a substitute (as shown in Specification), and then, carrying out a cycloaddition reaction with thio rhodamine B hydrazide (as shown in Specification), so as to obtain the modified SBA-15 mesoporous material with chemical structural formula as shown in Specification. The modified SBA-15 mesoporous material, as a hybridized mesoporous fluorescent adsorbent showing efficient detection and a capacity of removing mercury ions in a water body and integrating multiple functions, can simultaneously carry out detection and recovery processes on dangerous chemical substances in a water solution, an air system, and in particular in body blood or tissue.

The present invention is to provide a colored composition having higher heat resistance compared with conventional colored compositions. The present invention further relates to: “a polymer having a monomer unit derived from a monomer which has (i) a cationic rhodamine derivative having, as an counter anion, an anion including an aryl group having an electron-withdrawing substituent and an anion group and (ii) an ethylenically unsaturated bond”, “a monomer which has (i) a cationic rhodamine derivative having, as an counter anion, an anion including an aryl group having an electron-withdrawing substituent and an anion group and (ii) an ethylenically unsaturated bond”, “a colored composition comprising the above-described polymer or the monomer”, and “a colored composition for a color filter comprising the above-described polymer or the monomer”.

The invention discloses a rhodamine B derivative containing an 8-aminoquinoline group, a preparation method, an application and a method for carrying out fluorescence analysis on Cr<3+> and Cu<2+>. The rhodamine B derivative containing the 8-aminoquinoline group is capable of selectively and quantitatively detecting chromium ions (Cr<3+>) in acetonitrile, and is capable of selectively and quantitatively detecting copper ions (Cu<2+>) in ethanol and generating an obvious fluorescence increment effect. The rhodamine B derivative containing the 8-aminoquinoline group is simple in synthesis method, and is capable of quantitatively detecting different heavy metal ions Cr<3+> and Cu<2+> in different solvents at high selectivity and high sensitivity, is a dual-functional fluorescence probe, and has a good application prospect in the fields of environment analysis and detection.

The invention discloses a hydrogen peroxide detecting fluorescent probe ACR, and belongs to the technical field of analytical chemistry. The hydrogen peroxide detecting fluorescent probe uses a rhodamine derivative as a parent and 2-azide methyl aromatic formic acid ester as a switch, and the chemical structural formula of the hydrogen peroxide detecting fluorescent probe is shown in the specification. The hydrogen peroxide detecting fluorescent probe is simple to synthesize and easy to use, can be specifically reacted with hydrogen peroxide to release fluorescence, and has good hydrogen peroxide selectivity, and in the hydrogen peroxide detection process in the presence of other related oxides, the hydrogen peroxide detecting fluorescent probe has good anti-interference performance, and can detect hydrogen peroxide in living cells.

The invention discloses an application of a rhodamine B derivative containing methyl chloride carbonyl piperazine as a cellular mitochondrion fluorescence coloring agent. The rhodamine B derivative can be used as the cellular mitochondrion fluorescence coloring agent for high-selectivity long-term stability label of the cellular mitochondrion. The rhodamine B derivative enters the cellular mitochondrion after incubating with different cells. The rhodamine B derivative has long retention time in the cellular mitochondrion, and has high stability, is not easily optically quenched, and does not react with active substance in the cells. The rhodamine B derivative can be used for specifically and stably labeling different cellular mitochondria. The rhodamine B derivative can be used as a fluorescent label substance for different cells, and can be used for long-time labeling and tracking the mitochondria in the cells.

The invention discloses a reaction type cysteine probe and a preparation method thereof. According to the preparation method, rhodamine derivatives are taken as fluorophores, and an acrylate structure is taken as a specific reaction group of cysteine; the probe is very weak in fluorescent light, but the fluorescent light of the probe is enhanced after the probe reacts with the cysteine, so that the probe can be used for detecting the cysteine. The probe can more rapidly react with the cysteine in a PBS 7.4 (30% ethanol) system, and has good selectivity and higher sensitivity; the probe can be applied to fluorescence detection, visual qualitative detection and cell imaging detection which are carried out for determining the content of the cysteine in biological and environmental systems.

It is an object of the present invention to provide an ophthalmic lens characterized in that it is capable of developing a color at a position where a light is irradiated, and to provide a marking method of the ophthalmic lens. It is another object of the present invention to provide an ophthalmic lens, which can form a clear and easily readable mark, without causing problems such as discoloration of the mark, caused by cleaning of the lens by rubbing, or deterioration of the mechanical strength of the lens, and to provide a marking method of the ophthalmic lens. The ophthalmic lens of the present invention is obtained by a polymerization of a polymerizable composition of monomers, which contains an alkyl (meth)acrylate as an essential polymerizable component, and this polymerization is carried out while the rhodamine derivative is existed in the composition.

To solve the problems caused by using rhodamine derivatives and 9-trimethylbenzyl-10-methylacridine ion that take S and Se as the bridge atoms as the photosensitive agents, the invention provides a novel nitrogen-containing cation chromophore and a preparation method thereof. The compound has the characteristics of long absorption wavelength, long excitation wavelength, high quantum yield and long exiting time of excited triplet state generated by absorbing photons, easy water-solubility, and incapability of coordinating with metal catalysts. The preparation method comprises the following steps: making m-bromoaniline derivatives carry out Ullmann C-N coupling reactions with excess primary amine in the presence of a CuI catalyst so as to obtain a reaction product A; making the reaction product A carry out Ullmann C-N coupling reactions with m-iodoaniline derivatives in the presence of KN(Si(CH3)3)2 so as to obtain a reaction product B; making the reaction product B carry out Bayer condensation reactions with benzaldehyde derivatives in the present of a ferric trichloride catalyst or a zinc dichloride catalyst to enclose the ring so as to obtain a reaction product C; and finally carrying out a dehydration treatment on the reaction product C with 2,3-dicyano-5,6-dichlorobenzoquinone (DDQ) so as to obtain the target product.

The invention discloses an up-conversion fluorescent probe rhodamine derivative and an application thereof. The preparation method comprises the following steps: performing a reaction on rhodamine B and ethylenediamine in a nitrogen gas atmosphere and an organic solvent to obtain rhodamine-ethylenediamine; and performing a reaction on the rhodamine-ethylenediamine and phenyl isothiocyanate to obtain the up-convertion fluorescent probe rhodamine derivative. The up-conversion fluorescent probe rhodamine derivative provided by the invention has the high-efficiency down-conversion fluorescence-enhanced response recognition characteristics for mercury ions and has the high-efficiency up-conversion fluorescence-enhanced response recognition characteristics for the mercury ions when used as a fluorescent probe.

The invention discloses a preparation method of a colorimetric mercury ion sensor based on a rhodamine derivative and application. The colorimetric sensor is a novel colorimetric sensor prepared by taking rhodamine B, quadrol, Lawesson reagent and 4-chloro-7-nitrobenzofuran as raw materials. Mercury ions can be subjected to high-selectivity and high-sensitivity detection by the colorimetric sensor in a mixed solvent of acetonitrile and water. Compared with the existing mercury ion detection technology, the novel colorimetric sensor is simple in synthetic route, low in invested cost and simple in used detection device, is suitable for amplification synthesis and actual production application and has great application prospect in technical fields of analytical chemistry, environmental sciences, life sciences and the like.