Surface-confined single molecules: assembly and disassembly of nanosize coordination cages on gold (111)

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Menozzi, Edoardo and Pinalli, Roberto and Speets, Emiel A. and Ravoo, Bart Jan and Dalcanale, Enrico and Reinhoudt, David N. (2004) Surface-confined single molecules: assembly and disassembly of nanosize coordination cages on gold (111). Chemistry: a European Journal, 10 (9). pp. 2199-2206. ISSN 0947-6539

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Abstract:A cavitand functionalized with four alkylthioether groups at the lower rim, and four tolylpyridine groups on the upper rim is able to bind to a gold surface by its thioether groups, and forms a coordination cage with [Pd(dppp)(CF3SO3)2] by its pyridine groups. The cavitand or the cage complex can be inserted from solution into a self-assembled monolayer (SAM) of 11-mercaptoundecanol on gold. The inserted molecules can be individually detected as they protrude from the SAM by atomic force microscopy (AFM). The cages can be reversibly assembled and disassembled on the gold surface. AFM can distinguish between single cavitand and cage molecules of 2.5 nm and 5.8 nm height, respectively.
Item Type:Article
Copyright:© 2004 WILEY-VCH Verlag
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Link to this item:http://purl.utwente.nl/publications/49530
Official URL:http://dx.doi.org/10.1002/chem.200305570
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Metis ID: 222109