Abstract: A device for towing a towed bicycle with a towing bicycle, comprises a frame attachment (1) for the towing bicycle, a carrier (2) connected to the frame attachment (1), the carrier comprising a hub holder (4) for the front wheel hub of the towed bicycle. In order to enable safe towing of a towed bicycle without modifying it, whereby the towing position can be established as simply as possible and driving safety during towing is impaired as little as possible, the carrier (2) forms a tire support (3) for the tire of the front wheel of the towed bicycle and the hub holder (4) comprises a hub support (5) for the front wheel hub and a hub stop (6) engaging behind the front wheel hub on the side facing away from the tire support (3).

Abstract: A method for producing a proton-conducting, polyazole-containing membrane, in which A) a composition containing polyphosphoric acid and at least one polyazole and exhibiting a solution viscosity in the range from 10 Pa·s to 1000 Pa·s, measured to DIN 53018 at the temperature at the orifice during production of the membrane, is pressed through an orifice at a temperature in the range from 25° C. to 300° C., and B) the composition is then solidified.

Abstract: A terrylene compound of formula I: wherein R1 to R4 are each independently an unsubstituted or substituted alkyl, aryl, thiophenyl or oligothiophenyl group, or a hydrogen atom. Two adjacent radicals selected from R1 to R4, together with the carbon atoms of the benzene ring to which they are bonded, may also form a fused ring system having 1 to 8 additional rings. With the carbon atoms to which it is bonded, A forms a fused monocyclic, dicyclic, tricyclic, tetracyclic, pentacyclic or hexacyclic ring system which optionally contains one or more independently selected substituents. A process for preparing the terrylene compound. An organic solar cell with a photoactive region including at least one organic donor material in contact with at least one organic acceptor material, the donor material and the acceptor material forming a donor-acceptor heterojunction, and the photoactive region including at least one such terrylene compound.

Abstract: An apparatus and a method for stripping wort, with the apparatus including a receptacle that has a wort inlet and a wort outlet, and a heater on the side wall of the receptacle as well as a distributor device which applies the wort to the heating surface of the heater, such that the wort runs down the heating surface as a film.

Abstract: The present invention relates to an organic solar cell with a photoactive region which comprises at least one organic donor material in contact with at least one organic acceptor material, wherein the donor material and the acceptor material form a donor-acceptor heterojunction and wherein the photoactive region comprises at least one substituted perylene.

Abstract: The present invention relates to an organic solar cell which comprises at least one photoactive region which comprises at least one indanthrene compound which is in contact with at least one fullerene compound, and to the use of indanthrene compounds in organic photovoltaics, especially in the form of a component cell of a tandem cell.

Abstract: A method for producing a proton-conducting, polyazole-containing membrane, in which A) a composition containing polyphosphoric acid and at least one polyazole and exhibiting a solution viscosity in the range from 10 Pa·s to 1000 Pa·s, measured to DIN 53018 at the temperature at the orifice during production of the membrane, is pressed through an orifice at a temperature in the range from 25° C. to 300° C., and B) the composition is then solidified.