Plasmonic Nanostructures-Decorated ZIF-8-Derived Nanoporous Carbon for Surface-Enhanced Raman Scattering.

ACS Omega

Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan.

Published: October 2022

AI Article Synopsis

  • SERS (Surface-enhanced Raman scattering) is a sensitive method for detecting chemical and biological substances.
  • Metal-organic frameworks (MOFs) and porous carbon nanostructures are beneficial as SERS substrates due to their large surface areas and charge-resonance properties.
  • The study showcases a new composite of porous Au@Ag nanostructures on MOF-derived nanoporous carbon that significantly enhances Raman signal detection of a model compound, 2-naphthalenethiol, even at very low concentrations (picomolar levels).

Article Abstract

Surface-enhanced Raman scattering (SERS) is considered to be a highly sensitive platform for chemical and biological sensing. Recently, owing to their high porosity and large surface area, metal-organic frameworks (MOFs) have attracted considerable attention in sensing applications. Porous carbon nanostructures are promising SERS substrates due to their strong broadband charge-transfer resonance and reproducible fabrication. Furthermore, an extraordinarily large enhancement of the electromagnetic field enables plasmonic nanomaterials to be ideal SERS substrates. Here, we demonstrate the porous Au@Ag nanostructure-decorated MOF-derived nanoporous carbon (NPC) for highly efficient SERS sensing. Specifically, this plasmonic nanomaterial-NPC composite offers high Raman signal enhancement with the ability to detect the model Raman reporter 2-naphthalenethiol (2-NT) at picomolar concentration levels.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9583643PMC
http://dx.doi.org/10.1021/acsomega.2c04183DOI Listing

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