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Irreversible accumulated SERS behavior of the molecule-linked silver and silver-doped titanium dioxide hybrid system
Zhou, L; Zhou, J; Lai, W; Yang, XD; Meng, J; Su, LB; Gu, CJ; Jiang, T; Pun, EYB; Shao, LY; Petti, L; Sun, XW; Jia, ZH; Li, QX; Han, JG; Mormile, P
2020-04-14
Source PublicationNATURE COMMUNICATIONS
ISSN2041-1723
Issue1
SubtypeArticle
AbstractIn recent years, surface-enhanced Raman scattering (SERS) of a molecule/metal-semiconductor hybrid system has attracted considerable interest and regarded as the synergetic contribution of the electromagnetic and chemical enhancements from the incorporation of noble metal into semiconductor nanomaterials. However, the underlying mechanism is still to be revealed in detail. Herein, we report an irreversible accumulated SERS behavior induced by near-infrared (NIR) light irradiating on a 4-mercaptobenzoic acid linked with silver and silver-doped titanium dioxide (4MBA/Ag/Ag-doped TiO2) hybrid system. With increasing irradiation time, the SERS intensity of 4MBA shows an irreversible exponential increase, and the Raman signal of the Ag/Ag-doped TiO2 substrate displays an exponential decrease. A microscopic understanding of the time-dependent SERS behavior is derived based on the microanalysis of the Ag/Ag-doped TiO2 nanostructure and the molecular dynamics, which is attributed to three factors: (1) higher crystallinity of Ag/Ag-doped TiO2 substrate; (2) photo-induced charge transfer; (3) charge-induced molecular reorientation. The authors report that near-infrared light induces an irreversible accumulated Surface-enhanced Raman scattering (SERS) behavior of a molecule/metal-semiconductor hybrid system. They investigate the underlying mechanism and show that it is attributed to crystallinity, charge transfer and reorientation.
DOI10.1038/s41467-020-15484-6
WOS KeywordENHANCED RAMAN-SCATTERING ; 4-MERCAPTOBENZOIC ACID ; ADSORPTION BEHAVIOR ; SURFACE ; NANOPARTICLES ; TIO2 ; SPECTROSCOPY ; PROBE
Language英语
WOS Research AreaScience & Technology - Other Topics
PublisherNATURE PUBLISHING GROUP
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28144
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Zhou, L,Zhou, J,Lai, W,et al. Irreversible accumulated SERS behavior of the molecule-linked silver and silver-doped titanium dioxide hybrid system[J]. NATURE COMMUNICATIONS,2020(1).
APA Zhou, L.,Zhou, J.,Lai, W.,Yang, XD.,Meng, J.,...&Mormile, P.(2020).Irreversible accumulated SERS behavior of the molecule-linked silver and silver-doped titanium dioxide hybrid system.NATURE COMMUNICATIONS(1).
MLA Zhou, L,et al."Irreversible accumulated SERS behavior of the molecule-linked silver and silver-doped titanium dioxide hybrid system".NATURE COMMUNICATIONS .1(2020).
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