Irreversible accumulated SERS behavior of the molecule-linked silver and silver-doped titanium dioxide hybrid system

doi:10.1038/s41467-020-15484-6

SIC OpenIR

	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 Publication	NATURE COMMUNICATIONS
ISSN	2041-1723
Issue	1
Subtype	Article
Abstract	In 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.
DOI	10.1038/s41467-020-15484-6
WOS Keyword	ENHANCED RAMAN-SCATTERING ; 4-MERCAPTOBENZOIC ACID ; ADSORPTION BEHAVIOR ; SURFACE ; NANOPARTICLES ; TIO2 ; SPECTROSCOPY ; PROBE
Language	英语
WOS Research Area	Science & Technology - Other Topics
Publisher	NATURE PUBLISHING GROUP
Citation statistics	Cited Times:3[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://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).

Files in This Item:
There are no files associated with this item.

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

中国科学院上海硅酸盐研究所机构知识库