A new concept for molecular-scale wiring is presented here. The semiconducting polymer polysilane has been end-grafted to a surface using a technique whereby main-chain rigidity and density are controllable. The silicon chains were tethered to the surface by means of a covalent bond (see Figure) and 1D structures such as molecular dot, rope, and toroid were visualized using AFM (see also cover).
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Furukawa et al. (2000) studied this question.