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Two-dimensional correlation localized surface plasmon resonance spectroscopy for analysis of the interaction between metal nanoparticles and bovine serum albumin

Tang, Bin, Xu, Shuping, Tao, Jinlong, Wu, Yuqing, Xu, Weiqing and Ozaki, Yukihiro 2010, Two-dimensional correlation localized surface plasmon resonance spectroscopy for analysis of the interaction between metal nanoparticles and bovine serum albumin, Journal of physical chemistry C, vol. 114, no. 49, pp. 20990-20996, doi: 10.1021/jp1056336.

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Title Two-dimensional correlation localized surface plasmon resonance spectroscopy for analysis of the interaction between metal nanoparticles and bovine serum albumin
Author(s) Tang, BinORCID iD for Tang, Bin orcid.org/0000-0001-7111-8223
Xu, Shuping
Tao, Jinlong
Wu, Yuqing
Xu, Weiqing
Ozaki, Yukihiro
Journal name Journal of physical chemistry C
Volume number 114
Issue number 49
Start page 20990
End page 20996
Total pages 7
Publisher American Chemical Society
Place of publication Washington D. C.
Publication date 2010
ISSN 1932-7447
1932-7455
Keyword(s) body fluids
colloid chemistry
gold
metals
nanoparticles
plasmons
principal component analysis
silver
spectroscopy
spectrum analysis
surface plasmon resonance
transmission electron microscopy
two dimensional
Summary Time-resolved extinction spectra assisted with two-dimensional correlation spectroscopy (2DCOS) analysis and principal component analysis (PCA) were employed to investigate the interaction between bovine serum albumin (BSA) and metal nanoparticles (NPs). A series of localized surface plasmon resonance (LSPR) spectra of metal NPs were measured just after a small amount of BSA was added into metal colloids. Through 2DCOS analysis, remarkable changes in the intensities of the LSPR were observed. The interaction process was totally divided into three periods according to the PCA. Transmission electron microscopy, dynamic light scattering, and ζ-potential measurements were also employed to characterize the interaction between BSA and metal NPs. The addition of BSA brings silver NPs to aggregate through the electrostatic interaction between them, but it has less effect on gold NPs. In a gold and silver mixed system, gold NPs can affect the interaction of silver NPs and BSA, leading it to weaken. The combination of 2DCOS analysis and LSPR spectroscopy is powerful for exploring the LSPR spectra of the metal NP involved systems. This combined technique holds great potential in LSPR sensing through analysis of slight, slim spectral changes of metal colloids
Language eng
DOI 10.1021/jp1056336
Field of Research 030606 Structural Chemistry and Spectroscopy
Socio Economic Objective 860403 Natural Fibres, Yarns and Fabrics
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2010, American Chemical Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30044284

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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