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- W2046674527 abstract "Gold nanoprisms with average edge size of approximately 140 nm and thickness of approximately 8 nm were achieved in high-purity ( approximately 97%) by exploiting the electrostatic aggregation and shape effects through a modified seed-mediated approach. The proposed strategy lies in the dramatically different stability and aggregation potential between the produced gold nanoprisms and spherical gold nanoparticles, which can be modulated by varying the anion concentration in the reaction solution. Hence, the gold nanoprisms spontaneously aggregated into precipitate whereas most of the spherical ones were still kept in the solution. Moreover, this strategy is also flexible enough that ultra-small gold nanoprisms with average width less than 50 nm can be collected in good-purity. The structure and optical properties of these nanoprisms have been studied by TEM, SAED, XRD and UV-vis-NIR spectroscopy, respectively. These high-purity colloidal gold nanoprisms exhibit remarkably enhanced surface plasmon resonance (SPR) as well as strong near-infrared absorption. Furthermore, we have also investigated their potential for biosensing based on the sensitive changes of SPR band induced by the antibody-antigen recognition events. The experimental results clearly suggest that gold nanoprisms can be a promising nanostructured system for plasmonic sensor applications." @default.
- W2046674527 created "2016-06-24" @default.
- W2046674527 creator A5003011137 @default.
- W2046674527 creator A5012421463 @default.
- W2046674527 creator A5020902186 @default.
- W2046674527 creator A5035497282 @default.
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- W2046674527 creator A5053789239 @default.
- W2046674527 creator A5056308192 @default.
- W2046674527 creator A5058429480 @default.
- W2046674527 creator A5068480804 @default.
- W2046674527 date "2010-08-01" @default.
- W2046674527 modified "2023-09-25" @default.
- W2046674527 title "Achieving high-purity colloidal gold nanoprisms and their application as biosensing platforms." @default.
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