8 results about "Squaraine dye" patented technology

The present invention relates to an unsymmetrical squaraine dye of formula (I) and process for the preparation thereof. The process includes dissolving a 3-cycloalkene-1,2-dione compound in acetone and aqueous HCl to afford a semisquaraine compound. The process includes refluxing the semisquaraine compound and phenyl carboxylic acid dissolved in solvent to afford the unsymmetrical squaraine dye. Further, the present invention relates to an electronic device with an enhanced device efficiency containing a dye of formula (I) co-sensitized with a squaraine dye.

The application belongs to the technical field of photoelectric materials and application, and particularly relates to a TiOPc dopant, a TiOPc@SQ heterojunction and application thereof. An indolyl squarine dye (SQ) is synthesized, and the SQ is used as a dopant of TiOPc. The synergistic effect of the SQ and the TiOPc is used to improve the absorption capacity of the TiOPc in a near-infrared region, optimize a charge separation efficiency, and realize more excellent photoelectric detection performance.

A squaraine dye-peptide complex according to the present invention is represented by formula (I). (In formula (I), R1A represents a divalent aliphatic hydrocarbon group having 3 to 30 carbon atoms, R2A to R4A each independently represent a monovalent aliphatic hydrocarbon group having 1 to 30 carbon atoms, R5A represents an amino group or a carboxy group, and X represents any of amino acid sequences (1) to (7) (A represents alanine, V represents valine, P represents proline, I represents isoleucine, S represents serine, L represents leucine, G represents glycine, and D represents aspartic acid).)

The present invention aims to provide a resin composition which is a melt mixture of a near-infrared absorbing dye and a resin, and which can produce a molded body having good optical properties even when melt-molded. The present invention is a resin composition characterized by being a melt mixture of a resin and a cyanine dye and / or a squarylium cyanine dye, the cyanine dye being a compound containing a cation composed of a cyanine structure and an anion composed of tetra(pentafluorophenyl)borate, the cation composed of a cyanine structure having a specific structure or having a specific structure at at least one terminal of a polymethine skeleton, the squarylium cyanine dye being a compound having the following structure: at least one of the structures attached to the squarylium site contains a nitrogen-containing conjugated system composed of a five-membered ring and a six-membered ring; or, at least one of the structures attached to the squarylium site contains a nitrogen-containing conjugated system composed of a five-membered ring and a six-membered ring via one conjugated carbon.

To provide a novel double squaraine dye and a method for producing the same.SOLUTION: Provided is a double squaraine dye that is characterized by being represented by the following formula (I0). (In formula (I0), D1 and D2 each represent a heterocyclic group.).SELECTED DRAWING: Figure 1

The present invention relates to photocatalysts of formula I for controlled radical polymerization including photoinduced electron transfer-reversible addition-fragmentation chain transfer PET-RAFT polymerization. The present invention also discloses a process of preparation of polymers including copolymers, block copolymers, homopolymers and / or related polymers / copolymers where two or more monomers are reacted in presence of said a squaraine dye based photocatalyst of formula I, chain transfer agent (CTA), and light source, and optionally in presence of a catalyst activator in both batch and flow modes. The process of the present invention significantly reduces the induction period in the photocatalyzed controlled radical polymerization and also affords shorter reaction time of photocatalyzed controlled radical polymerization.

The application belongs to the technical field of intelligent responsive materials, and discloses a squarylium dye molecule doped liquid crystal host material, a preparation method and application, wherein the squarylium dye molecule doped liquid crystal host material is formed by mixing squarylium dye molecules and a liquid crystal host, the structural formula of the squarylium dye molecule includes R, R is a flexible functional group, and is selected from an alkyl chain, an alkyl chain with a double bond / triple bond, an oligomeric ethylene glycol chain or a siloxane chain, and the liquid crystal host is in a nematic phase or a smectic phase at room temperature; the application can realize fast color change response performance by adjusting the molecular aggregate structure, the material has multiple stimulus response characteristics, including photochromism, thermochromism and solvent annealing, is suitable for functional requirements under complex environmental changes, and also exhibits excellent system compatibility, and can be combined with various polymer matrices to construct sandwich type composite films, polymer dispersed liquid crystal films and other functional materials.

The invention relates to the technical field of holographic optics, in particular to a red light photosensitive initiation system and application thereof. The red light photosensitive initiation system comprises the following components: a first component: squarylium cyanine dye; the second component is an electron acceptor which is selected from at least one of diaryl iodonium salt, aryl sulfonium salt and triazine compounds; and the third component is an electron donor which is borate and is selected from at least one of alkyl aryl borate and aryl borate. The red light photosensitive initiation system can rapidly generate active free radicals or anions / cations under illumination in the wavelength range of 600-750 nm to initiate monomer polymerization. The invention also provides application of the red light photosensitive initiation system in photocuring and preparation of a red-sensitive photopolymer type holographic recording medium, and preparation of a red light photopolymer with high diffraction efficiency and high photosensitivity can be realized.