Resonance Rayleigh Scattering Study of the Interaction between Surfactant and Silver Nanoparticles

2013 ◽  
Vol 716 ◽  
pp. 50-53
Author(s):  
Gui Qing Wen ◽  
Yuan Yuan Chen ◽  
Zhi Liang Jiang
Keyword(s):  
Silver Nanoparticles ◽  
Silver Nitrate ◽  
Cationic Surfactant ◽  
Cationic Surfactants ◽  
Rayleigh Scattering ◽  
Sodium Dodecyl ◽  
Resonance Rayleigh Scattering ◽  
Scattering Study

In the presence of sodium dodecyl benzene sulfate (SDBS) and under the irradiation of microwave, silver nitrate was reduced by alcohol to prepare stabile green and yellow silver nanoparticles in size of 41 nm and 71 nm respectively. Yellow silver nanoparticles have two resonance Rayleigh scattering (RRS) peaks at 440nm and 465nm. Green silver nanoparticles exhibit three RRS peaks at 420nm, 465nm and 585nm. Gray nanoparticles, which prepared in absence of SDBS, show a strong RRS at 465nm. Silver nanoparticles modified by dodecyl benzene sulfate (DBS) can react with cationic surfactant to exhibit novel RRS property. The concentration of some cationic surfactants is liner to the enhanced RRS intensity at 465nm.

Resonance Rayleigh Scattering Study of the Interaction of Heparin with Some Basic Diphenyl Naphthylmethane Dyes

2001 ◽  
Vol 73 (16) ◽  
pp. 3907-3914 ◽  
Author(s):  
Shaopu Liu ◽  
Hongqun Luo ◽  
Nianbing Li ◽  
Zhongfang Liu ◽  
Wenxu Zheng
Keyword(s):  
Rayleigh Scattering ◽  
Resonance Rayleigh Scattering ◽  
Scattering Study

Facile synthesis of a highly SERS active nanosilver sol using microwaves and its application in the detection of E. coli using Victoria blue B as a molecular probe

2016 ◽  
Vol 8 (24) ◽  
pp. 4881-4887 ◽  
Author(s):  
Yaohui Wang ◽  
Xinghui Zhang ◽  
Guiqing Wen ◽  
Aihui Liang ◽  
Zhiliang Jiang
Keyword(s):  
Silver Nanoparticles ◽  
Raman Scattering ◽  
Rayleigh Scattering ◽  
Molecular Probe ◽  
Resonance Rayleigh Scattering ◽  
Facile Synthesis ◽  
E Coli ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

A green microwave procedure was developed to synthesize highly surface-enhanced Raman scattering (SERS) active silver nanoparticles (AgNPs) with a resonance Rayleigh scattering (RRS) peak at 450 nm, and a new SERS enhancement mechanism was proposed.

scholarly journals Cloud Point Extraction Of Cationic Surfactants And Their Ionic Associates With Sodium Dodecyl Sulfate

2020 ◽  
Vol 15 (3) ◽  
pp. 111-116
Author(s):  
S.O. Lelyushok ◽  
V.O. Doroschuk ◽  
S. A. Kulichenko
Keyword(s):  
Cloud Point ◽  
Cationic Surfactant ◽  
Anionic Surfactant ◽  
Cationic Surfactants ◽  
Cloud Point Extraction ◽  
Sodium Dodecyl ◽  
Ionic Surfactant ◽  
Rich Phase ◽  
Ionic Associates ◽  
Extraction Degree

The distribution of individual cationic surfactants and their ionic associates with the anionic surfactant in the cloud point extraction systems, based on non-ionic surfactant OP-7 was investigated. Determined that the dependence of the extraction degree of halides alkylpyridiniums on carboxylic change length in optimal conditions for extraction is characterized by the existence of maximum for cationic surfactant where n = 12. Decrease as well as increase in carboxylic change length of cation of alkylpyridiniums diminishes the effectiveness of their extraction into the surfactant-rich phase. The peculiarities of inter phase distribution of ionic associates cationic surfactant – anionic surfactant in the micellar extraction systems are investigated. It was shown, that with the increase in carboxylic change length of cationic surfactant the dependence of extraction degree of associates with anionic surfactant is characterized by the existence of the maximum. Most effective into the surfactant-rich phase extracted of ionic associates of three- and tetradecylpyridinium. Decreasing and increasing of hydrophobicity of alkylpyridiniums diminishes the effectiveness of extraction of associates. The established effects are explained by the hydrophobic correspondence between the substrate and the surfactant-rich phase of non-ionic surfactant.

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