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SERS of Trititanate Nanotubes: Selective Enhancement of Catechol Compounds
Author(s) -
Liu Ruochen,
Morris Edmund,
Cheng Xiaorong,
Amigues Eric,
Lau Kim,
Kim Baekman,
Liu Yuanhang,
Ke Zhipeng,
Ashbrook Sharon E.,
Bühl Michael,
Dawson Graham
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201801781
Subject(s) - catechol , raman scattering , raman spectroscopy , materials science , nanomaterials , composite number , nanotechnology , nanotube , photochemistry , chemistry , carbon nanotube , organic chemistry , optics , physics , composite material
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.