Details

Autor(en) / Beteiligte

• Yan, Hao
• Hohman, J. Nathan
• Li, Fei Hua
• Jia, Chunjing
• Solis-Ibarra, Diego
• Wu, Bin
• Dahl, Jeremy E. P.
• Carlson, Robert M. K.
• Tkachenko, Boryslav A.
• Fokin, Andrey A.
• Schreiner, Peter R.
• Vailionis, Arturas
• Kim, Taeho Roy
• Devereaux, Thomas P.
• Shen, Zhi-Xun
• Melosh, Nicholas A.

Titel

Hybrid metal–organic chalcogenide nanowires with electrically conductive inorganic core through diamondoid-directed assembly

Ist Teil von

• Nature materials, 2017-03, Vol.16 (3), p.349-355

Ort / Verlag

London: Nature Publishing Group UK

Erscheinungsjahr

2017

Quelle

MEDLINE

Beschreibungen/Notizen

• Controlling inorganic structure and dimensionality through structure-directing agents is a versatile approach for new materials synthesis that has been used extensively for metal–organic frameworks and coordination polymers. However, the lack of ‘solid’ inorganic cores requires charge transport through single-atom chains and/or organic groups, limiting their electronic properties. Here, we report that strongly interacting diamondoid structure-directing agents guide the growth of hybrid metal–organic chalcogenide nanowires with solid inorganic cores having three-atom cross-sections, representing the smallest possible nanowires. The strong van der Waals attraction between diamondoids overcomes steric repulsion leading to a cis configuration at the active growth front, enabling face-on addition of precursors for nanowire elongation. These nanowires have band-like electronic properties, low effective carrier masses and three orders-of-magnitude conductivity modulation by hole doping. This discovery highlights a previously unexplored regime of structure-directing agents compared with traditional surfactant, block copolymer or metal–organic framework linkers. The use of diamondoids as structure-directing agents allows the synthesis of metal–organic chalcogenide nanowires with an inorganic core having a three-atom cross-section and band-like conductivity.