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Phase Behavior of Heptanamide Adsorbed on a Graphite Substrate

DOI: 10.1021/la1041053 DOI Help

Authors: Tej Bhinde (University of Cambridge) , Tamsin Phillips (University of Cambridge) , Stuart Clarke (University of Cambridge) , Tom Arnold (Diamond Light Source) , Julia Parker (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Langmuir , VOL 27 (1) , PAGES 15-18

State: Published (Approved)
Published: January 2011

Abstract: In this letter, the phase behavior of a saturated alkylamide, heptanamide (C7), adsorbed on the surface of graphite using synchrotron X-ray diffraction is presented. The diffraction patterns indicate that heptanamide undergoes a solid−solid phase transition in the monolayer at 330 K from pgg symmetry at lower temperatures to p2 symmetry at high temperatures. Other alkylamides with similar carbon chain lengths do not show this phase change, making the C7 homologue unusual.

Subject Areas: Chemistry

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