Abstract: A dye-sensitized solar cell comprises a metal oxide electrode, a counter electrode which faces the metal oxide electrode and an electrolyte arranged between the metal oxide electrode and the counter electrode, wherein the metal oxide electrode comprises a dye located thereon and the electrolyte comprises an electrochemical redox pair. Furthermore, between the metal oxide electrode and the counter electrode, nitrogen-doped carbon nanotubes (N-CNTs) are arranged, which are in electrical contact with the counter electrode. The invention further relates to a method of obtaining electrical energy by means of dye-sensitized solar cells according to the invention and to the use of nitrogen-doped carbon nanotubes as catalyst in the reaction of an electrochemical redox pair, in particular of the redox pair I?/I3?.

Abstract: The invention relates to a novel process for producing carbon materials which are modified at least on their surface with pyridinic, pyrrolic and/or quaternary nitrogen groups starting out from carbon nanotubes.

Abstract: Methods of treating tumor cells in an individual comprise administering to the individual a drug having anti-tumor effect, wherein the drug is delivered into the tumor cells via Right-Handed Coiled-Coil (RHCC) protein or a fragment or variant thereof. The drug may, for example, be a metal-containing compound, a protein or peptide drug, and/or an organic hydrophobic compound.

Abstract: A photovoltaic cell, particularly a color-sensitized solar cell, comprises a conductive support substrate, coated with a metal oxide semiconductor layer, a color layer embodied so as to electronically interact with the metal oxide semiconductor layer, an electrolyte later that is applied to the color layer, and a counter-electrode which is connected to the electrolyte layer. The support substrate and/or the counter-electrode is/are made from a flexible fabric composed of a plurality of interwoven fibers.

Abstract: The present invention relates to different uses of an RHCC peptide and/or a fragment thereof. Said RHCC peptide and/or fragment thereof enables an uptake and association of a drug and/or a substance into a cavity of said peptide and/or fragment, for the delivery and release of such a substance and/or drug to a target site of interest, or for removal of a substance from a fluid or a non-fluid matter, such as from a bodily tissue or a bodily fluid. An RHCC peptide and/or a fragment thereof, may also in one context be used in the production of nanoparticles, or as a catalyst in a chemical reaction. In a preferred aspect, said RHCC peptide and/or fragment thereof, comprises a drug delivery system for the delivery of a drug to a site of interest in a living body.