Bottom-Up Synthesis of Metalated Carbyne

Sun, Qiang; Cai, Liangliang; Wang, Shiyong; Widmer, Roland; Ju, Huanxin; Zhu, Junfa; Li, Lei; He, Yunbin; Ruffieux, Pascal; Fasel, Roman; Xu, Wei (2016). Bottom-Up Synthesis of Metalated Carbyne. Journal of the American Chemical Society, 138(4), pp. 1106-1109. American Chemical Society 10.1021/jacs.5b10725

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Because of stability issues, carbyne, a one-dimensional chain of carbon atoms, has been much less investigated than other recent carbon allotropes such as graphene. Beyond that, metalation of such a linear carbon nanostructure with regularly distributed metal atoms is even more challenging. Here we report a successful on-surface synthesis of metalated carbyne chains by dehydrogenative coupling of ethyne molecules and copper atoms on a Cu(110) surface under ultrahigh-vacuum conditions. The length of the fabricated metalated carbyne chains was found to extend to the submicron scale (with the longest ones up to ∼120 nm). We expect that the herein-developed on-surface synthesis strategy for the efficient synthesis of organometallic carbon-based nanostructures will inspire more extensive experimental investigations of their physicochemical properties and explorations of their potential with respect to technological applications.

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