Decoding the molecular water structure at complex interfaces through surface-specific spectroscopy of the water bending mode
Takakazu Seki, Chun‐Chieh Yu, Xiaoqing Yu, Tatsuhiko Ohto, Shumei Sun, Konrad Meister, Ellen H. G. Backus, Mischa Bonn, Yuki Nagata
Abstract
and water-protein interfaces. For the former, we show that this method can indeed single out water O-H groups from surface hydroxyls, and that with increasing pH, the hydrogen-bonded network of interfacial water strengthens. Furthermore, we unveil enhanced hydrogen bonding of water, compared to bulk water, at the interface with human serum albumin proteins, a prototypical bio-interface.
Topics & Concepts
Hydrogen bondChemistrySum frequency generation spectroscopySum-frequency generationChemical physicsMoleculeBendingAqueous solutionWettingForce spectroscopySpectroscopyPhysical chemistryMaterials scienceComposite materialOrganic chemistryPhysicsNonlinear opticsNonlinear systemQuantum mechanicsSpectroscopy and Quantum Chemical StudiesMolecular spectroscopy and chiralityQuantum, superfluid, helium dynamics