Solid monolayer formation by all the linear amines from C6 to C16 adsorbed from their liquids to a graphite
surface is demonstrated. Shorter homologues do not show such solid monolayer formation. The behavior is
interpreted in terms of the competition between the alkyl chains, which favor solid monolayer formation, and
the amine group, which does not. Nonylamine (C9) also shows evidence of a solid−solid phase transition in
the monolayer prior to melting.
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