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Preparation and single molecule structure of electroactive polysilane end-grafted on a crystalline silicon surface

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2 Author(s)
Furukawa, Kazuaki ; NTT Basic Research Laboratories, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan ; Ebata, Keisuke

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Electrically active polysilanes of poly(methylphenylsilane) (PMPS) and poly[bis(p-n-butylphenyl)silane] (PBPS), which are, respectively, known as a good hole transporting material and a near-ultraviolet electroluminescent material, are end-grafted directly on a crystalline silicon surface. The single polysilane molecules are clearly distinguished one from the other on the surface by means of atomic force microscopy observations. End-grafted single molecules of PMPS are observed as dots while end-grafted PBPS appear as worms extending for more than 100 nm on the crystalline silicon surface. © 2000 American Institute of Physics.

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Applied Physics Letters  (Volume:77 ,  Issue: 26 )