26
September 2002
Chemistry: Branches everywhere
A new synthesis strategy increases the charge carrier mobility of conventional organic molecules and conducting polymers, by attaching molecules able to interact with them to the apex of a fluorinated dendron — a hyperbranched polymer. This system self-assembles into dense arrays of supramolecular cylinders, each containing a core of conducting molecules or polymers surrounded by a protective layer of dendrons. This fast and versatile strategy could give rise to 'supramolecular electronics' — involving devices that use individual columns, with diameters as small as 3 nanometres and lengths between 50 and100 nanometres, as functional elements.
Self-organization of supramolecular helical dendrimers
into complex electronic materials
V. PERCEC, M.
GLODDE, T. K. BERA, Y. MIURA, I. SHIYANOVSKAYA, K. D. SINGER, V. S. K. BALAGURUSAMY,
P. A. HEINEY, I. SCHNELL, A. RAPP, H.-W. SPIESS, S. D. HUDSON & H. DUAN
Nature 419, 384–387 (2002); doi:10.1038/nature01072
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Chemistry: Material marriage in electronics
E. W. MEIJER & ALBERT P. H. J. SCHENNING
Self-organizing
molecules can form structures with useful electronic properties. These supramolecular
materials combine the benefits of polymers with those of organic crystalline systems.
Nature 419, 353–354 (2002); doi:10.1038/419353a
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