Flexible and conformable organic single crystals as thin as 150 nm are used for fabricating mechanically bendable organic single‐crystal field‐effect transistors on low‐cost plastic substrates (see figure and cover). We report effective field‐effect mobility as high as 4.6 cm2 V–1 s–1 for a flexible rubrene single‐crystal transistor, on/off ratio of ca. 106, threshold voltage of – 2.1 V, and a normalized subthreshold swing of 0.9 V nF decade–1 cm–2.

Carbon offers unmatched versatility among the elements of the periodic table. Depending on its hybridization state and atomic arrangement, carbon forms the layered semiconductor graphite, the insulator diamond, with its unmatched hardness, the high surface area amorphous carbons, and the nano-sized fullerenes and nanotubes, among others. This paper broadly reviews carbon allotropes, with emphasis on some recent results and applications, particularly in the field of high surface area amorphous carbons.

A porous coordination polymer containing zinc, 1,2,4-triazolate, and tetrafluoroterephthalate displays a high physisorptive hydrogen adsorption enthalpy of 8 kJ/mol, as a result of fluorine atoms exposed to the pore surface and the structure's small pore size.

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