Synthesis, characterization, monolayer assembly and 2D lanthanide coordination of a linear terphenyl-di(propiolonitrile) linker on Ag(111)

• Zhi Chen,
• Svetlana Klyatskaya,
• José I. Urgel,
• David Écija,
• Olaf Fuhr,
• Willi Auwärter,
• Johannes V. Barth and
• Mario Ruben

Beilstein J. Nanotechnol. 2015, 6, 327–335, doi:10.3762/bjnano.6.31

• . The linker molecules retain an overall flat adsorption geometry. However, only networks with restricted local order were obtained, in marked contrast to previously employed, simpler polyphenylene-dicarbonitrile 1 linkers. Keywords: di(propiolonitrile) linker; lanthanides; metal–organic networks

• . In inset: model of one of the coordination units presented (the 5-fold linker Gd nonameric unit. Data was obtained at 6 K. Image size: 352 × 195 Å2. Scanning parameters: Vbias = 0.7 V, I = 0.1 nA). Synthesis of the terphenyl-4,4"-di(propiolonitrile) linker (2). Reagents and conditions: a) propargyl