SERS of trititanate nanotubes: selective enhancement of catechol compounds

Ruochen Liu, Edmund Morris, Xiaorong Cheng, Eric Amigues, Kim Lau, Baekman Kim, Yuanhang Liu, Zhipeng Ke, Sharon E. Ashbrook, Michael Bühl, Graham Dawson

Research output: Contribution to journalArticlepeer-review

Abstract

The surface enhanced Raman scattering of trititanate nanotubes (TiNT) modified with enediol ligands was investigated and it was found that the functional group dramatically affects the enhancement observed. For TiNT‐4‐nitrocatechol, a SERS enhancement is seen; however, when dopamine is attached, no signal is seen. The relative band gap positions upon 785 nm laser excitation are proposed to explain the observed phenomenon. This attachment is investigated by solid state NMR and UV/Vis spectroscopy and supported by DFT calculations to offers further insights into catechol coatings of nanomaterials and SERS by the chemical method. We expect this non noble metal containing composite material to have applications in bioimaging and bio and chemical detection.
Original languageEnglish
Pages (from-to)8338-8343
Number of pages6
JournalChemistrySelect
Volume3
Issue number28
Early online date30 Jul 2018
DOIs
Publication statusPublished - 31 Jul 2018

Keywords

  • SERS
  • Nanotubes
  • Surface modification

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