Abstract: A method of selectively depleting pathogenic T lymphocytes from a blood cell composition is carried out by (a) combining the cell composition ex vivo with an active compound in an effective amount, and then (b) irradiating the cells with light ex vivo for a time and at an intensity sufficient to selectively kill pathogenic T lymphocytes in said cell composition. Chalcogenorhodamine photosensitizers useful as such active compounds are also described.

Abstract: A method for production of hydrogen. In the method, an aqueous solution of a chalcogenoxanthylium compound, a catalyst and sacrificial electron donor are exposed to electromagnetic radiation with a wavelength of from 400 nm to 850 nm. Exposure of the aqueous solution to the electromagnetic radiation results in production of hydrogen. Such a method can be used, for example, in dye-sensitized solar cell.

Abstract: Provided are chalcogenoxanthylium compounds which can effectively be used as sensitizers in photodynamic therapy, virucides in photodynamic antimicrobial chemotherapy and reversal agents of Pgp function in cancer cells. Further provided is a general method for the preparation of chalcogenoxanthylium compounds.

Abstract: Provided are chalcogenoxanthylium compounds which can effectively be used as sensitizers in photodynamic therapy, virucides in photodynamic antimicrobial chemotherapy and reversal agents of Pgp function in cancer cells. Further provided is a general method for the preparation of chalcogenoxanthylium compounds.

Abstract: Provided are chalcogenoxanthylium compounds which can effectively be used as sensitizers in photodynamic therapy, virucides in photodynamic antimicrobial chemotherapy and reversal agents of Pgp function in cancer cells. Further provided is a general method for the preparation of chalcogenoxanthylium compounds.

Abstract: The present invention relates to a coating composition including a sol-gel matrix and a dendrimeric organochalcogeno derivative and a system including the coating composition and a substrate. The present invention also relates to a method of preventing fouling of surfaces subjected to a marine environment.

Abstract: An optical disc having machine-readable, information encoding features includes a coating comprising a tellurapyrylium dye irreversibly bleachable by light. The dye, once bleached, is operative to change the index of refraction of the dye to inhibit reading of the information encoding features.

Abstract: The present invention relates to a coating composition including a sol-gel matrix and a dendrimeric organochalcogeno derivative and a system including the coating composition and a substrate. The present invention also relates to a method of preventing fouling of surfaces subjected to a marine environment.

Abstract: The present invention is directed to novel photosensitive compounds that can be replicated with great certainty and provide applications for photodynamic therapy.

Abstract: The present invention is directed to novel photosensitive compounds that can be replicated with great certainty and provide applications for photodynamic therapy.

Abstract: A sulfone charge transport agent and a multilayered electrophotographic element in which at least one of said layers includes polymeric binder and the sulfone charge transport agent. The general structure of the charge transport agent is: ##STR1## R is alkyl or cycloalkyl having from 1 to about 10 carbons, or aryl or heteroaryl having a total of carbons and heteroatoms of from 6 to about 12. T is alkyl having from 1 to 4 carbons.

Abstract: A sulfone charge transport agent and a multilayered electrophotographic element in which at least one of said layers includes polymeric binder and the sulfone charge transport agent. The general structure of the charge transport agent is: ##STR1## R is alkyl or cycloalkyl having from 1 to about 10 carbons, or aryl or heteroaryl having a total of carbons and heteroatoms of from 6 to about 12. T is alkyl having from 1 to 4 carbons.

Abstract: Electrophotographic elements including near-infrared radiation absorbing sensitizers and selected near-infrared radiation absorbing additives exhibit a reduced tendency toward the formation of laser interference patterns. These elements can be utilized in electrophotographic imaging processes including the steps of electrostatically charging the element, imagewise exposing the charged element to near-infrared radiation to form an electrostatic latent image, developing the electrostatic latent image by applying charged toner particles to the element to produce a toned image, and transferring the toned image to a suitable receiver.

Abstract: What is disclosed is a ligand analog comprising a dicarboxylic acid oxidation product of a immunologically reactive mono-or a polysaccharide having vicinal diols, to which a label or a support is appended through an amide or thioester linkage.

Abstract: There is disclosed a recordable optical element that includes a dye. The element has a substrate and on the surface of the substrate, a dye containing recording layer and a light reflecting layer. The dye is a leuco dye which upon exposure to a thermally-generated acid becomes an absorption dye.

Abstract: There is disclosed a recordable optical element that includes a dye. The element has a substrate and on the surface of the substrate, a dye containing recording layer and a light reflecting layer. The improvement is that the dye is a leuco dye.

Abstract: Certain chemical compounds, which are aromatic heterocyclic-substituted derivatives of 4H-thiopyran-1,1-dioxide, are electron-transport agents. These compounds exhibit good speed and toe voltage properties in electrophotographic elements.

Abstract: There is disclosed an optical retrieval apparatus which uses a laser for illuminating an optical element. A sensor responds to modulated light from the optical element to produce electrical signals. The optical element has a substrate and on the surface of the substrate, a dye containing recording layer and a light reflecting layer. The improvement is that the dye is a leuco dye.

Abstract: Certain chemical compounds, which are aromatic heterocyclic-substituted derivatives of 4H-thiopyran-1,1,-dioxide given by the formula (I) wherein Het is a substituted or unsubstituted heterocyclic ring system containing at least one 5-membered heterocyclic aromatic ring; and R is an alkyl, aralkyl, or cycloalkyl group of 1 to about 10 carbon atoms, or an aryl group of 6 to about 12 carbon atoms, or a substituted or unsubstituted heterocyclic ring system containing at least one 5-membered aromatic heterocyclic ring, are electron-transport agents. These compounds exhibit good speed and toe voltage properties in electrophotographic elements.

Abstract: The invention provides a multiactive electrophotographic element comprising an electrically conductive substrate, a charge generation layer, and a charge transport layer, wherein the charge transport layer contains an electron transport agent having the structure: ##STR1## wherein J is H, Cl, Br, alkyl, alkoxy, aryl, or aryl further substituted with halo or alkyl; and wherein R is styryl, aryl, or heteroaryl in which the hetero atom is S or O, each of which R is unsubstituted or further substituted with alkyl, halo, alkoxy, nitro, hydroxy, cyano, trifluoromethyl, alkylsulfonyl, arylsulfonyl, alkoxycarbonyl, amino, alkylamino, dialkylamino, arylamino, or alkylarylamino.Such an element exhibits a good combination of electrophotographic performance properties.