科研之友
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摘要
In this work, we present a study of linear iodoalkanes physisorbed from their bulk liquid and at submonolayer coverages onto a graphite substrate by combining calorimetry, incoherent neutron scattering and synchrotron diffraction techniques. We identify that there is solid monolayer formation for these molecules for alkyl chain lengths of 5-12 carbons at high surface coverages. The monolayer structures of the odd homologues (5, 7, 9 and 11) have been addressed using synchrotron X-ray and neutron scattering at sub-monolayer coverages and indicate that the molecules lie with their carbon backbone parallel to the graphite surface with a Pgb plane group. Evidence for a non-bonded I-I interaction in the monolayers is also discussed.
- 出版日期2013-4-1
