34 results about "Hyperpolarizability" patented technology

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.

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 the field of organic second-order nonlinear optical materials, in particular to using julonidine or its derivatives as electron donors, using thiophene rings or cyclopolyene structures as conjugated electron bridges, using tricyanodihydrofuran or tricyanodihydrofuran An organic second-order nonlinear optical chromophore with a D-π-A structure whose fluorine-substituted tricyanodihydrofuran is an electron acceptor, its synthesis method and application. The combination of the electron donor, the conjugated π electron bridge and the electron acceptor used in the present invention can not only improve the intramolecular electron transport ability, but also increase the intermolecular steric hindrance. Therefore, this type of structure can effectively increase the first-order molecular hyperpolarizability (β) of the chromophore molecule, and can effectively reduce the intermolecular interaction force. Doping the organic second-order nonlinear optical chromophore with the amorphous polycarbonate can be used to prepare a polarized polymer film, and the polarized polymer film can be used as a material in the field of optical signal modulation. The organic second-order nonlinear optical chromophore has the following structure.

The invention belongs to the technical field of organic chemical industry, in particular to the synthesis and application of a D-A-π-A type N-hybrid porphyrin-dipyrrolene nonlinear optical material. The chemical structural formula is: the synthesis method is based on 5- Formethoxy-2,3,3-trimethylindole and tetraphenyl N-hybrid porphyrin, through Knoevenagel condensation reaction, simple and high yield to obtain D-A-π-A type N-hybrid porphyrin-di Pyrrolene nonlinear optical materials. The key point is to obtain a D-A-π-A type N-hybrid porphyrin-dipyrrolene conjugated structure simply and efficiently, thereby obtaining a higher first-order hyperpolarizability, and the prepared nonlinear optical chromophore It has potential important applications in the field of optical waveguide devices.

The invention discloses a method for preparing ferrocenyl alkynyl porphyrin molecule possessing nonlinear optical activity and an application thereof. The invention is characterized in that 5,15-dibromo-10, 20-diphenyl zinc porphyrin is taken as a raw material and reacted with ferrocenyl acetylene under the effect of a catalyst to obtain 5,15-ferrocenyl alkynyl-10, 20-diphenyl zinc porphyrin, then 5,15-ferrocenyl alkynyl-10, 20- diphenyl zinc porphyrin is treated by hydrochloric acid to obtain 5,15-ferrocenyl alkynyl-10, 20-diphenyl porphyrin. The obtained compound has high hyperpolarizability and obvious intramolecular photo-induced electron transfer structure characteristic, and has reverse saturable absorption characteristic, and can be used for nonlinear optics 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.

The present invention relates to 1,3,5-tricyano-2,4,6-tris(vinyl)benzene derivatives and method for preparing the same. The 1,3,5-tricyano-2,4,6-tris(vinyl)benzene derivatives can be prepared by refluxing 1,3,5-tricyanomesitylene with N-formylamine dimethylacetal or substituted benzaldehyde, or by the Wittig reaction of 1,3,5-tricyano-2,4,6-tris[(diethoxyphosphoryl)methyl]benzene with substituted benzaldehyde. The 1,3,5-tricyano-2,4,6-tris(vinyl)benzene derivatives exhibit large first hyperpolarizability in solution and significant second harmonic generation (SHG) in the powder state, and are useful as optical devices such as electro-optic modulators, optical switch, or the like for treating optical signal in optical communication industry.

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.