Self-directed growth of aligned adenine molecular chains on Si(111)7×7 : direct imaging of hydrogen-bond mediated dimers and clusters at room temperature by scanning tunneling microscopy
The early stage of adsorption of adenine on Si(111)7×7 is studied by scanning tunneling microscopy (STM). Bright protrusions are observed in both empty-state and filled-state STM images, indicative of molecular adsorption of adenine through dative bonding. The majority of these bright protrusions ap...
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