Enhanced plasmon resonance light scattering signals of colloidal gold resulted from its interactions with organic small molecules using captopril as an example

2006 ◽  
Vol 577 (2) ◽  
pp. 244-249 ◽  
Author(s):  
Zhong De Liu ◽  
Cheng Zhi Huang ◽  
Yuan Fang Li ◽  
Yun Fei Long
Keyword(s):  
Light Scattering ◽  
Small Molecules ◽  
Plasmon Resonance ◽  
Colloidal Gold ◽  
Resonance Light Scattering

scholarly journals Detection of Quadruplex DNA by Gold Nanoparticles

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Heather F. Crouse ◽  
Alex Doudt ◽  
Cassie Zerbe ◽  
Swarna Basu
Keyword(s):  
Gold Nanoparticles ◽  
Light Scattering ◽  
Sample Preparation ◽  
Lower Limit ◽  
Dna Sequences ◽  
Plasmon Resonance ◽  
Limit Of Detection ◽  
Resonance Light Scattering ◽  
Quadruplex Dna ◽  
Different Types

Gold nanoparticles have been used as a probe to detect low (<10 ppb) concentrations of quadruplex DNA. These nanoparticles display a tendency to form aggregates in the presence of certain quadruplex forms, as observed via enhanced plasmon resonance light scattering (PRLS) signals. These nanoparticles showed differing degrees of interactions with different types of quadruplex and mixed sequences but no interaction with duplex DNA. Enhancement of PRLS signals greater than 50% was observed at nanomolar DNA concentration, and a lower limit of detection of 2.1 nM was established for three different quadruplex DNA sequences, including the thrombin-inhibiting single-stranded 15 mer aptamer DNA, d(GGTTGGTGTGGTTGG), and the double-stranded 12 mer DNA, d(G4T4G4). Two different sample preparation protocols were used for the PRLS experiments, and they yielded similar results.

Long-distance transfer of plasmonic hot electrons across the Au–Pt porous interface for the hydrogen evolution reaction

2021 ◽  
Author(s):  
Chang Xia ◽  
Peng Fei Gao ◽  
Wei He ◽  
Ye Wang ◽  
Chun Hong Li ◽  
...  
Keyword(s):  
Light Scattering ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Plasmon Resonance ◽  
Resonance Light Scattering ◽  
Hot Electrons ◽  
Long Distance ◽  
Porous Interface ◽  
20 Nm ◽  
Au Nanosphere

The hot electrons transfer from Au nanosphere to Pt interfaces is directly imaged by plasmon resonance light scattering microscopy. Remarkably, the hot electrons could persistently transfer across porous Au-Pt interfaces longer than 20 nm.

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