8 results about "Donor group" patented technology

The application discloses a blue fluorescent molecule, which has a D-pi-A structure, contains an oxadiazole as an acceptor group and a phenyl carbazole as a donor group, and connects the acceptor group and the donor group with an aromatic ring having a thermal excitation energy level arrangement characteristic as a pi bridge. The application also provides a preparation method and application of the blue fluorescent molecule. The application uses the aromatic ring having the thermal excitation energy level arrangement characteristic as the pi bridge, reasonably regulates a high-energy excited state of the acceptor by introducing the donor, activates a thermal excitation channel of the molecule, breaks through a limitation of 25% of an excitation utilization rate of a fluorescent material, and thus improves the excitation utilization rate.

The present disclosure is directed, in general, to (1) nonlinear optical (NLO) chromophores containing 3-aminocyclohex-2-en-l-one based donor groups, including (2) compositions / materials / resistive layers comprising NLO chromophores containing 3-aminocyclohex-2- en-l-one based donor groups, and the methods of making the compositions / materials / resistive layers comprising NLO chromophores containing 3-aminocyclohex-2-en-l-one based donor groups (e.g., methods of drying and / or poling, and the like), (3) uses of NLO chromophores containing 3-aminocyclohex-2-en-l-one based donor groups in electro-optic devices (e.g., EOMs). The nonlinear optical (NLO) chromophores have the following formula (II):

Nonlinear optical chromophore compositions which display lyotropic nematic liquid crystal phases in polar organic solvents and provide a mechanical anisotropic effect allowing for the formation of a non-centrosymmetric chromophore-polymer matrix without the application of an electric field.

An organic light emitting device using a compound of the following general formula has excellent characteristics. R1 to R5 each are H, D, a cyano group, an alkyl group, an aryl group or a donor group, one or more are cyano groups, one or more are donor groups; X1 to X3 each are N or C(R); R is H, D or a substituent; one or more of Ar1 and Ar2 each are a heteroaryl group bonding via N; L1 is a single bond or a linked group.

The invention relates to a nonlinear optical chromophore having an organic indolizine electron-donating group, having the following general formula (I): D represents an indolizine electron-donating group. N represents an n-bridge between A and D, wherein the n-bridge comprises a carbon chain covalently bound to and separating A and D. A represents an organic electron accepting group having an electron affinity greater than the electron affinity of D. The organic indolizine electron-donating group D has one of the following formulae. Various embodiments of the present invention include a non-linear optochromic group having an indolizine donor group, which has an indolizine donor attached to a pi-bridge group. In various preferred embodiments of the invention, the indolizine donor groups may be substituted or unsubstituted, including hydrogen and alkyl substituents, aryl substituents, and combinations thereof. In certain embodiments of the invention, the substituent moiety in the indolizine donor group may be important for separation. The separation may reduce chromophore-chromophore interactions. Separation may reduce charge transfer between molecules. The separation may increase the maximum applied voltage, which may contribute to better polarization and higher r33.

The present disclosure is directed, in general, to (1) nonlinear optical (NLO) chromophores containing 3-aminocyclohex-2-en-1-one based donor groups, including (2) compositions / materials / resistive layers comprising NLO chromophores containing 3-aminocyclohex-2-en-1-one based donor groups, and the methods of making the compositions / materials / resistive layers comprising NLO chromophores containing 3-aminocyclohex-2-en-1-one based donor groups (e.g., methods of drying and / or poling, and the like), (3) uses of NLO chromophores containing 3-aminocyclohex-2-en-1-one based donor groups in electro-optic devices (e.g., EOMs).

The compound represented by general formula (1) has excellent luminescence characteristics. One of R2 or R3 and Z represent a group of general formula (A); one of R1-R5 represents a donor group, and one to two of R1-R5 represent an aryl group; x1 and X2 represent N, C-H, C-CN or the like; ar1 and Ar2 represent an aryl group or a heteroaryl group; l represents a single bond or a linking group.

The compound represented by the following general formula has a long emission lifetime. 1-3 of R1-R5 are donor groups, the rest are H, D, cyano, aryl or alkyl, L is a single bond or a linking group, X1 is N or C, and Y is carbazole-9-yl or aryl.