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- W1977512235 abstract "Purely organic materials are generally insulating. Some charge-carrier generation, however, can provide them with electrical conductivity. In multi-component organic systems, carrier generation by intermolecular charge transfer has given many molecular metals. By contrast, in purely organic single-component systems, metallic states have rarely been realized although some neutral-radical semiconductors have been reported. Here we uncover a new type of purely organic single-component molecular conductor by utilizing strong hydrogen-bonding interactions between tetrathiafulvalene-based electron-donor molecules. These conductors are composed of highly symmetric molecular units constructed by the strong intra-unit hydrogen bond. Moreover, we demonstrate that, in this system, charge carriers are produced by the partial oxidation of the donor molecules and delocalized through the formation of the symmetric intra-unit hydrogen bonds. As a result, our conductors show the highest room-temperature electrical conductivity and the metallic state under the lowest physical pressure among the purely organic single-component systems, to our knowledge. Purely organic materials are generally insulating and while charge-carrier generation can provide electrical conductivity, it is rare for single-component systems. Here, symmetric hydrogen bonding between tetrathiafulvalene-based molecules gives rise to room-temperature conductivity and low pressure metallic state transitions." @default.
- W1977512235 created "2016-06-24" @default.
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- W1977512235 date "2013-01-08" @default.
- W1977512235 modified "2023-10-16" @default.
- W1977512235 title "Hydrogen bond-promoted metallic state in a purely organic single-component conductor under pressure" @default.
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- W1977512235 doi "https://doi.org/10.1038/ncomms2352" @default.
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