Redox-controlled potassium intercalation into two polyaromatic hydrocarbon solids

F. Denis Romero, M. J. Pitcher, C. I. Hiley, G. F.S. Whitehead, S. Kar, A. Y. Ganin, D. Antypov, C. Collins, M. S. Dyer, G. Klupp, R. H. Colman, K. Prassides, M. J. Rosseinsky

研究成果: Article査読

25 被引用数 (Scopus)

抄録

Alkali metal intercalation into polyaromatic hydrocarbons (PAHs) has been studied intensely after reports of superconductivity in a number of potassium- and rubidium-intercalated materials. There are, however, no reported crystal structures to inform our understanding of the chemistry and physics because of the complex reactivity of PAHs with strong reducing agents at high temperature. Here we present the synthesis of crystalline K2 Pentacene and K2 Picene by a solid-solid insertion protocol that uses potassium hydride as a redox-controlled reducing agent to access the PAH dianions, and so enables the determination of their crystal structures. In both cases, the inserted cations expand the parent herringbone packings by reorienting the molecular anions to create multiple potassium sites within initially dense molecular layers, and thus interact with the PAH anion π systems. The synthetic and crystal chemistry of alkali metal intercalation into PAHs differs from that into fullerenes and graphite, in which the cation sites are pre-defined by the host structure.

本文言語English
ページ(範囲)644-652
ページ数9
ジャーナルNature Chemistry
9
7
DOI
出版ステータスPublished - 2017 7月 1

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)

フィンガープリント

「Redox-controlled potassium intercalation into two polyaromatic hydrocarbon solids」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル