Polymer/fullerene solar cells are printed on paper using a combination of gravure and flexographic printing techniques. The printed paper photovoltaic cells are free from expensive electrodes made with indium–tin oxide, silver, or gold. Oxidized zinc film is used as the electron‐collecting layer.

Mass printing processes are the key technology to produce mass products to the point of one-disposable. Carbon nanotube (CNT) based structures were prepared by flexographic printing using multi-walled carbon nanotube (MWCNT) dispersions in water. The carbon nanotubes were applied to a textile substrate made of polyester and polyamide microfilaments and to both-side coated paper to produce electrically conductive layers that can be used, for example, as heating elements. Carbon nanotube layers with sheet resistivity ranging from 0.12 to 3.00 kΩ/sq were obtained. The ratio of radiation power PS (determined according to the Stefan-Boltzmann law) of the printed layers to the electrical power spent, represents the efficiency of the system. The samples on textile substrate with a surface temperature of 169°C have an efficiency of 25%, the paper samples with a surface temperature of 93 °C have an efficiency of about 15 %.

The performance of wind turbines suffers from icing in regions with extreme climate. One approach is to incorporate heating elements into the most susceptible areas of the wind turbine blade as protection against icing and for de‐icing. Cost‐efficient and reproducible fabrication, as well as easy integration is important due to the large area of wind turbine blades. In this work, multi‐walled carbon nanotubes are applied on a 50% poly(ethylene terephthalate) and 50% polyamide non‐woven textile substrate by rotary‐screen printing. The printed layers function as resistive heating elements in a fiber‐reinforced composite. The heating areas are provided with flexographic or screen inline‐printed silver‐electrodes and can be integrated by means of vacuum infusion into a glass fiber‐reinforced epoxy composite laminate. These laminates, which are connected to an intelligent electrical control system, are suitable for melting ice on the surface of components or for preventing the formation of ice. The first promising experiments on heating structures in a rotor blade of a wind turbine at laboratory scale (2 m length) are the basis of studies on intelligent electrical control of heating structures and their behavior at different temperatures. The heating elements were able to melt a 3–4 mm thick ice layer within 25 min in a climate chamber at −5 °C. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45950.

Carbon nanotube (CNT) formulations based on commercially available aqueous dispersions were printed using flexographic printing on a polycarbonate film which was provided with a polyethyleneimine-based primer layer to improve the wetting and adhesion properties. Depending on the formulation, the structured CNT layers (35 mm  50 mm) show heating rates of up to 14 K/s during resistive heating (applied voltage of 12 V) in the temperature range from room temperature to 70 C. The recording of temperature-time curves was carried out by means of an infrared camera system. The cooling largely depends on the substrate and its heat capacity as well as on environmental conditions, and could be actively supported and/or regulated. The formulations of different solid contents were described in terms of viscosity and surface tension while the printed layers were characterized regarding the mass load per area, sheet resistance, electrical power effective during resistive heating, and the layer morphology.

The reaction of [Fe(η5‐C5H4PPh2)(η5‐C5H4terpy)] (5; terpy = 2,2′:6′,2″‐terpyridin‐4′‐yl) with diverse transition‐metal compounds including [PtCl2(Et2S)2], [Pd(cod)X2], [AuCl(tht)], [CuBr], [Mo(CO)4(nbd)], and [{RhCl(cod)}2] (X = Cl, Br; tht = tetrahydrothiophene; nbd = norbornadiene; cod = cyclooctadiene) to afford heterobi‐ and trimetallic complexes and a coordination polymer is reported. The following compounds were prepared: [Fe(η5‐C5H4PPh2{PtCl2(SEt2)})(η5‐C5H4terpy)] (7), trans‐[PtCl2{(Ph2P‐η5‐C5H4)(η5‐C5H4terpy)Fe}2] (9), [Fe(η5‐C5H4PPh2PdCl2)(η5‐C5H4terpy)] (12), [Fe{η5‐C5H4PPh2(Cl3Pd–)}(η5‐C5H4terpy{(dmso)2ClNi+})] (14), trans‐[PdX2{(Ph2P‐η5‐C5H4)(η5‐C5H4terpy)Fe}2] (16a, X = Cl;16b, X = Br), [Mo(CO)4{(η5‐C5H4PPh2)(η5‐C5H4terpy)Fe}2](17), [Fe{η5‐C5H4Ph2P(CuBr)}(η5‐C5H4terpy)]n (19), [Fe{η5‐C5H4Ph2P(AuCl)}(η5‐C5H4terpy)] (22), [Fe(η5‐C5H4Ph2P{Rh(cod)Cl})(η5‐C5H4terpy)] (23), [Ru({η5‐C5H4Ph2P(AuCl)}(η5‐C5H4terpy)Fe)2]Cl2 (25), and [Fe{η5‐C5H4PPh2(PdCl2)}{η5‐C5H4‐CH=CHC(O)(py)}] (26). The molecular structures of 5, 9, 12, 14, 16b, 22, and 26 in the solid state are reported. They show typical features of related phosphanylferrocenes and terpyridylferrocenes. Characteristic of 12 is a C–H activation as a result of the close distance of palladium to the terpyridyl moiety. Complexes 12, 26, and [PdCl2(dppf)] [dppf = 1,1′‐bis(diphenylphosphanyl)ferrocene], for comparison, were used in preliminary studies as catalysts in the carbon–carbon coupling of iodobenzene with tert‐butyl acrylate to give (E)‐tert‐butyl cinnamate. The conversion amounts to 80 % with a turnover number of 160 and turnover frequency of 48 h–1.