34 results about "Hyperpolarizability" patented technology

A system for making molecules, and proteins in particular, suitable for detection by a surface-selective nonlinear optical technique. A first use of the invention is for determining a protein's structure in real space and real time. A second use of the invention is to detect a protein or its activity (conformational change). A third use of the invention is for drug screening. A further aspect of the present invention is measuring probe tilt angle orientation in an oriented protein.

The invention relates to an organic second-order non-linear optical chromophore with a D-Pi-A structure and decorated by a tree-like group, and a synthesizing method and applications thereof. The chromophore of the invention introduces a thiophene ring conjugated Pi electronbridge having stronger electrical transmission capacity and containing branched chains and a tricyano pyrroline receptor having strong electron-withdrawing property; the receptor end is introduced into the tree-like decorative group, the one-order hyperpolarizability of chromophore molecules is greatly improved; the solubility and the film forming ability of the chromophore in polymer is improved, the interaction force among the molecules is reduced. The second-order non-linear optical chromophore with the following structure is doped with polymers, such as amorphous polycarbonate or polymethylmethacrylate and the like according to the mass ratio of 1:10; the electro-optical coefficient of the obtained polarized polymeric materials achieves 217pm/V; in addition, the donor and receptor of the chromophore can be introduced into a crosslinkable group, thus improving oriented stability of the chromophore in polymer, and satisfying the requirements of devices.

An electro-optic system in accordance with an embodiment of the present invention comprises a high glass transition temperature (Tg≧about 210° C.) polymer matrix featuring aromatic groups on the backbone repeating unit, which hosts a guest, high hyperpolarizability organic NLO chromophore. Electro-optic systems according to embodiments of the present invention exhibit relatively high electro optical activity and low optical loss, and may exhibit optical stability at temperatures exceeding 70° C. Guest-host polymer systems in accordance with embodiments of the present invention may be formed into unique and appropriate shapes such as waveguides.

The invention discloses a preparation method and application of sandwich-type ferrocene porphyrin-phthalocyanine coordination compound with non-linear optical activity. The preparation method is characterized by comprising steps that firstly, monolayer europium phthalocyanine serving as an intermediate product is generated by hydrate acetylacetone europium and 1,2-dicyanobenzene in the presence of catalyst, and then the sandwich-type ferrocene porphyrin-phthalocyanine coordination compound can be obtained by directly adding 5,15-ferrocene base porphyrin for reaction. The obtained sandwich-type ferrocene porphyrin-phthalocyanine coordination compound is higher in hyperpolarizability and shows a reverse saturable absorption characteristic, thereby being applied to non-linear optics and laser protection.

The invention relates to the organic second-order nonlinear optical material field, and especially relates to an organic second-order nonlinear optical chromophore having a D-pi-A structure, and a synthetic method and a use thereof, wherein the organic second-order nonlinear optical chromophore is prepared through treating a 1,1,7,7-tetramethyljulolidine derivative as an electron donor and tricyanodihydrofuran or tricyanopyrroline as an electron acceptor. The alkyl group on the julolidine donor N used in the synthetic method and a phenyl ring form a closed six-membered ring, and the upper surface and the lower surface of the six-membered ring are respectively connected with a methyl group, so the spatial steric hindrance structure can effectively reduce the interaction force among molecules and improve the first-order molecular hyperpolarizability (beta) of the molecules of the chromophore. The organic second-order nonlinear optical chromophore having the D-pi-A structure can be doped with an amorphous polycarbonate to prepare a polarized polymer film, and the prepared film can be used as a material in the optical signal modulation field. The structures of the organic second-order nonlinear optical chromophore are represented by formulas in the specification.

The invention relates to a compound having a D-pi-A structure as well as a preparation method and application of the compound. The method uses an indacene derivative as a pi-conjugated electron bridge, and introduces an electron-donating group and an electron-withdrawing group at two ends of the derivative to prepare the nonlinear optical chromophore having the D-pi-A structure. The longer conjugation length of the chromophore makes the chromophore have larger first-order hyperpolarizability (beta), so that high-performance organic electrooptical materials can be prepared. The chromophore provided by the invention has a larger molecular weight, in addition to be doped with a polymer to prepare a film, the chromophore can be directly dissolved by using an organic solvent and used to preparea film through spin coating, and the chromophore provides great convenience for a componentization process; and the chromophore provided by the invention also has a higher thermal decomposition temperature and glass transition temperature, so that nonlinear optical chromophore molecules have extremely good orientation stability in materials, and meet requirements for componentization to a large extent.

The invention belongs to the technical field of organic non-linear optical materials, and particularly relates to a self-assembly porphyrin nano fiber material. Experiment data show that the self-assembly porphyrin nano fiber material has a regular appearance shape, is bar-shaped or strip-shaped, has high hyperpolarizability, has the characteristic of reverse saturable absorption and can be applied to non-linear optical and laser protection.

The present invention discloses type-Y second order non-linear optical chromophore containing imidazolyl heterocycle and its synthesis process. The preparation process includes the following steps: 1. preparing 1, 2-di-(p-methoxyl phenyl) ethyl ketone; 2. preparing 1, 2-di-(p-hydroxyl phenyl) ethyl ketone; 3. synthesizing type-Y second order non-linear optical chromophore containing imidazolyl heterocycle. The process is mild, and the synthesized second order non-linear optical chromophore has relatively high hyperpolarizability (beta value), excellent transparency, high thermal decomposition temperature and contained functional group capable of bonding with polymer or inorganic 3D network.

A benzo-fused-heterocyclic elongated dye having a superior molecular hyperpolarizability and yet having an acceptably-low optical absorbance of light near 1550 nm in wavelength, which is an important optical communication band for telecommunication applications.

The present invention provides a kind of organic nonlinear optical chromophore compound containing 1, 3-dithio cyclopentenyl group. The compound has ground-state dipole moment lower than that of available organic chromophore compound for polarized polymer. It has exocylic double bond connected to its 1, 3-dithio cyclopentenyl group and constituting one part of molecular conjugated bridge bond, and has molecular ground-state dipole moment of 2-6.5 D, molecular first order hyperpolarizability beta higher than that of p-nitraniline, and excellent transparency and heat stability.

The invention relates to a thio-isophorone bridge modified double-donor organic optical nonlinear chromophore as well as a synthesis method and application thereof, and six nonlinear optical chromophores Z1-Z6 are designed and synthesized based on a bis (N, N-diethyl) aniline derivative and a thio-isophorone bridge. The invention designs and synthesizes a theoretically driven EO chromophore Z1-Z6 based on a bis (N, N-diethyl) aniline derivative and a thio-isophorone bridge. Particularly, different functional groups such as tert-butyl trimethylsilane, a tert-butyl (methyl) diphenyl silane derivative, 1, 3-bis (trifluoromethyl) benzene and alkylaniline cyanoacetate are used for modifying the bridging part of the chromophore Z2-Z6. And the donor with stronger electron donor capability can generate larger first-grade hyperpolarizability. In addition to relatively high first-order hyperpolarizability, the special structure of the double donors and an isolating group on a chromophore bridge have relatively high spatial effect, so that the material has relatively high polarization efficiency.

A benzo-fused-heterocyclic elongated dye having a superior molecular hyperpolarizability and yet having an acceptably-low optical absorbance of light near 1550 nm in wavelength, which is an important optical communication band for telecommunication applications.

The present invention discloses a neutrality-amphotericity bonded divalent non-linear optical chromophore group, the structural formula of which is shown in the formula (1). By applying the method of covalent bonding, the donors of two neutral chromophore groups are linked with the receptor of a zwitterionic chromophore group to produce a ramiform chromophore group. The neutrality-amphotericity bonded divalent non-linear optical chromophore group of the present invention is characterized in high hyperpolarizability, low dipole moment and high thermo-decomposing temperature.