Hyperuniform Mesoporous Gold Films Coated with Halogen-Bonding Metal-Organic Frameworks for Selective Raman Sensing of Chlorinated Hydrocarbons.

ABSTRACT: The selective detection of chlorinated aromatic hydrocarbons (CAHs) in environmental samples is challenging due to matrix interference effects. We report a surface-enhanced Raman spectroscopy (SERS) sensor that combines mesoporous Au films with UiO-66-I metal-organic framework (MOF) coatings to achieve the selective detection of CAHs. We show that mesoporous Au films can be considered hyperuniform two-dimensional (2D) materials where long-range correlations and local disorder assist in electromagnetic hotspot formation for SERS. Infiltrating the mesoporous Au films with UiO-66-I serves dual functions critical to sensor performance: First, its iodine-functionalized linkers selectively recruit CAHs from complex matrices through halogen bonding (HaB), concentrating target molecules at SERS ho

SUBMITTER: Khairunnisa SZ 

PROVIDER: S-EPMC12333424 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature