Nanoscale C-H/C-D mapping of organic materials using electron spectroscopy.

ABSTRACT: Distinguishing hydrogen from deuterium using atomic-scale imaging and spectroscopy is crucial for identifying microscopic structures and the origins of the properties of organic materials. However, conventional structural analysis techniques for materials containing both isotopes, such as neutron scattering, provide only averaged information across the beam area. Here we utilize vibrational spectroscopy using a monochromated transmission electron microscope to discretely image hydrogen and deuterium in organic polymers at single-nanometre resolution. This technique allowed carbon-hydrogen and carbon-deuterium stretches to be mapped, which uncovered the surface segregation of the deuterated polystyrene component within a block copolymer film composed of deuterated polystyrene and poly(2-vin

SUBMITTER: Senga R 

PROVIDER: S-EPMC12532599 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature