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Improved properties of gold nanorods coated with thin multilayer of small organic molecules by fast and facile method for surface enhanced Raman scattering

Zhang, Yuan (author)
KTH,Zhejiang-KTH Joint Research Center of Photonics, JORCEP,Lund University, Sweden; Zhejiang University, China
Sun, Xianhe (author)
KTH,Zhejiang-KTH Joint Research Center of Photonics, JORCEP,Lund University, Sweden; Zhejiang University, China
Liu, Wen (author)
KTH,Zhejiang-KTH Joint Research Center of Photonics, JORCEP,Lund University, Sweden; Zhejiang University, China
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Lee, El-Hang (author)
KTH,Zhejiang-KTH Joint Research Center of Photonics, JORCEP,Lund University, Sweden; Zhejiang University, China
He, Sailing (author)
KTH,Elektroteknisk teori och konstruktion,Zhejiang-KTH Joint Research Center of Photonics, JORCEP,Lund University, Sweden; Zhejiang University, China
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 (creator_code:org_t)
2015-03-31
2015
English.
In: Optical and quantum electronics. - : Springer. - 0306-8919 .- 1572-817X. ; 47:8, s. 2759-2766
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We introduce a thin multilayer-shell-coated gold nanorods (GNRs) that we have been able to achieve by way of coating them with two thin layers of small organic molecules in a new, efficient, effective, time-saving, and easy-to-control multilayer coating method. Compared to the thick shell, due to the small size of the coating molecules, this new type of GNR, by simply mixed with the sample solution, has shown that it can act as a highly effective and improved surface enhanced Raman scattering (SERS) enhancement agent without the need of any sample connecting or doping. This enhancement is found not only related to the off-resonance surface enhancement, but also to the increased signal-to-noise ratio brought by the low level of fluorescence emission. It showed excellent stability in strong acids, bases and some organic solvents as examined by comparing the longitudinal surface plasmon resonance peak values. A living body experiment on a tumor-bearing nude mouse injected with the Raman reporter dye loaded onto our new GNRs showed strong surface enhanced Raman scattering signal in the tumor, suggesting its high potential use in many related optical applications.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Keyword

Fluorescence quench
Gold nanorods
Multilayer
Surface enhanced Raman scattering
Surface plasmon resonance
Tumor
Coatings
Fluorescence
Gold
Gold coatings
Molecules
Multilayers
Nanoribbons
Nanorods
Plasmons
Raman scattering
Resonance
Signal to noise ratio
Tumors
Fluorescence emission
Gold nanorod
Gold nanorods (GNRs)
Longitudinal surface plasmon resonances
Multi-layer-coating
Optical applications
Small organic molecules
Surface enhanced Raman Scattering (SERS)
Surface scattering

Publication and Content Type

ref (subject category)
art (subject category)

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By the author/editor
Zhang, Yuan
Sun, Xianhe
Liu, Wen
Lee, El-Hang
He, Sailing
About the subject
ENGINEERING AND TECHNOLOGY
ENGINEERING AND ...
and Electrical Engin ...
Articles in the publication
Optical and quan ...
By the university
Royal Institute of Technology

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