Structure of water and polymer at the buried polymer/water interface unveiled using heterodyne-detected vibrational sum frequency generation
Anton Myalitsin, Sanat Ghosh, Shu-hei Urashima, Satoshi Nihonyanagi, S. Yamaguchi, Takashi Aoki, Tahei Tahara
Abstract
The structure of the prototypical acrylic polymer (poly(methyl methacrylate): PMMA)/water interface is elucidated at the molecular level using heterodyne-detected sum-frequency generation. Two distinct OH groups of interfacial water are found at the interface: one forms hydrogen bonds with the carbonyl group and the other weakly interacts with the ester methyl group of the polymer surface.
Topics & Concepts
Heterodyne (poetry)PolymerSum-frequency generationSum frequency generation spectroscopyHeterodyne detectionMaterials scienceInterface (matter)Chemical physicsOpticsMoleculeChemistryPhysicsNonlinear opticsOrganic chemistryLaserComposite materialAcousticsGibbs isothermSpectroscopy and Quantum Chemical StudiesPhotochemistry and Electron Transfer StudiesMolecular spectroscopy and chirality