Structural Changes in Poly(2-methoxyethyl acrylate) Thin Films Induced by Absorption of Bisphenol A. An Infrared and Sum Frequency Generation (SFG) Study

作者： Shen Ye , Shigeaki Morita , Guifeng Li , Hiroyuki Noda , Masaru Tanaka

关键词: Absorption spectroscopy 、 Absorption (chemistry) 、 Side chain 、 Polystyrene 、 Acrylate 、 Acrylate polymer 、 Physical chemistry 、 Chemistry 、 Polymer chemistry 、 Molecule 、 Thin film 、 Inorganic chemistry 、 Organic chemistry 、 Materials Chemistry 、 Polymers and Plastics

摘要: The structural changes in poly(2-methoxyethyl acrylate) (PMEA) thin films induced by the absorption of bisphenol A (BPA), which is suspected to be an endocrine disrupter disturbing hormone balance a living body, have been investigated infrared reflection spectroscopy (IRRAS) and sum frequency generation (SFG) measurements. BPA molecules are absorbed PMEA film. By controlling thickness intermediate polystyrene (PS) film between Au substrate, we able probe molecular structure at different interfaces air/PMEA (free) PMEA/PS (buried) SFG ether methyl (OCH3) group side chain both has same vector orientation with respect Au, i.e., pointing into air free interface buried interface. OCH3 groups likely stand up that interfacial ordering on increased absorption. st...