Light-driven degradation of photoactive molecules could be one of the major obstacles to stable long term operation of organic dye-based solar light harvesting devices. One solution to this problem may be mimicking the regeneration functionality of a plant leaf. We report an organic dye photovoltaic system that has been endowed with such microfluidic regeneration functionality. A hydrogel mediu...

A novel class of DNA cleavage agents are reported that derive activity from amino acids tethered to a photoactive intercalator.

titanium dioxide (tio2)nanoparticles have been frequently employed in the environmental treatment and purification purposes as a cheap and highly efficient photocatalyst. a photocatalyst can facilitate the breakdown and removal of a variety of environmental pollutants at room temperature. tio2 photocatalyst is the best candidatebecause of its strong oxidized ability, non-toxicity and longtherma...

The assembly of melamine and 2,5-dihydroxy-1,4-benzoquinone results in new "sheet-like" supramolecular crystals that by controlled thermal condensation can be converted to photoactive materials at relativity low temperatures. The condensation temperature alters the materials properties from polymer-like to carbon materials alongside their morphology and elemental ratio. This new method opens th...

Photoactive probes have been introduced recently to study the hydrophobic sector of integral membrane proteins. A simple procedure to synthesize a new series of highly radioactive aryl azido-phospholipids is presented. They effectively exchange with the boundary lipids and, on illumination, the cross-link to several membrane proteins with high efficiency. The procedure and analysis of labelling...

Spectroscopic, electrochemical and theoretical characterisations of photoactive systems readily assembled via click-chemistry show an efficient bi-directional charge shift through the triazole link.

A series of dendritic macromonomers have been synthesized and utilized as the photoactive component in holographic storage systems leading to high performance, low shrinkage materials.

Fluorescence spectroscopic and kinetic analysis of photochemical activity, cofactor and substrate binding, and enzyme denaturation studies were performed with highly purified, recombinant pea NADPH:protochlorophyllide oxidoreductase (POR) heterologously expressed in Escherichia coli. The results obtained with an individual stereoisomer of the substrate [C8-ethyl-C13(2)-(R)-protochlorophyllide] ...

Herrn Prof. Dr. L. Z e r v a s , Athen, danken wir für wertvolle Hinweise, Herrn Dr. J. G l i e m a n n , Kopen­ hagen, für die biologischen Teste. Dem Gesamtverband der Textilindustrie in der Bundesrepublik Deutschland, der Arbeitsgemeinschaft Industrieller Forschungsver­ einigungen e. V. und dem Bundesministerium für Wirtschaft danken wir für die Förderung des For­ schungsvorhabens 1318. Fern...