title: Oligomer orientation in vapor-molecular-layer-deposited alkyl-aromatic polyamide films.
abstract: The surface-limited molecular-layer deposition of alkyl-aromatic polyamide films using sequential doses of 1,4-butane diamine (BDA) and terephthaloyl dichloride (TDC) is characterized using in situ quartz crystal microbalance and ex situ spectroscopy analysis. For the first time, near-edge X-ray absorption fine structure (NEXAFS) spectroscopy is used to offer insight into molecular orientation in films deposited via molecular-layer deposition (MLD). The results show that the oligomer units are lying nearly parallel to the surface, which differs from the linear vertical growth mode often used to illustrate film growth.
authors: Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States. qing.peng@duke.edu
authors: Qing
authors: Q
authors: Peng
authors: Kirill
authors: K
authors: Efimenko
authors: Jan
authors: J
authors: Genzer
authors: Gregory N
authors: GN
authors: Parsons
mesh_terms: D000478:Alkylation; D015394:Molecular Structure; D009757:Nylons / Q000138:chemical synthesis / Q000737:chemistry*; D013499:Surface Properties; D014835:Volatilization
chemical_list: D009757:Nylons