Self-assembled templating for the growth of molecular nanodots

Yokoyama, Takashi
February 2010
Applied Physics Letters;2/8/2010, Vol. 96 Issue 6, p063101
Academic Journal
A checkerboard pattern of α-sexithiophene (α-6T) with an approximate lattice size of 2.6×3.3 nm2 has been achieved on a Ag(110) surface at monolayer coverage, which is formed through a lateral ordering of two oriented molecules and vacancy defects. We find that this self-assembled pattern provides a template structure for the formation of molecular nanodots and nanocolumns. Second and third-layer islands of α-6T are formed within the checkerboard lattice, leading to a uniform molecular nanodot array, and a nanosized columnar structure is expected if growth is continued into the multilayer regime.


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