Au-Pt-Pd spherically self-assembled nano-sieves as SERS sensors

Fang-Ching Chang, Jing-Wen Huang, Chun-Hua Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A series of unique granular and petaloid Au-capped Pt-Pd spherically-assembled nano-sieves (Au-PP SANSs) - with diameters smaller than 100 nm, combining quasi-regularly integrated surface-enhanced Raman scattering (SERS) active nanocrystals and a functional amphiphilic organic frame - have been successfully synthesized through a facile chemical route with a temperature-sensitive triblock copolymer soft template. Further, it has been demonstrated that they are potential candidates for developing highly-selective molecule-sieve assisted SERS sensors. The combination of the superposed inorganic and organic dual-core shell structures in Au-PP SANSs acts as a molecular sieve, which plays a crucial role in the promising chemical selectivity, which helps distinguish polar malachite green oxalate salt and non-polar thiabendazole molecules. (C) 2020 Elsevier B.V. All rights reserved.

Original languageEnglish
Article number155885
Number of pages9
JournalJournal of Alloys and Compounds
Volume843
DOIs
StatePublished - 30 Nov 2020

Keywords

  • Self-assembling
  • Tri-block-copolymer
  • Sensor
  • Nano-array
  • SERS
  • ENHANCED RAMAN-SPECTROSCOPY
  • PESTICIDE-RESIDUES
  • FOOD SAFETY
  • NANOPARTICLES
  • HOLLOW
  • PERFORMANCE
  • DENSITY
  • FRUITS
  • ARRAY

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