Influence of Ionic Strength and Surfactant Concentration on Electrostatic Surfacial Assembly of Cetyltrimethylammonium Bromide-Capped Gold Nanorods on Fully Immersed Glass

Langmuir ◽  
2010 ◽  
Vol 26 (14) ◽  
pp. 12433-12442 ◽  
Author(s):  
Abdul Rahim Ferhan ◽  
Longhua Guo ◽  
Dong-Hwan Kim
Keyword(s):  
Ionic Strength ◽  
Gold Nanorods ◽  
Cetyltrimethylammonium Bromide ◽  
Surfactant Concentration

scholarly journals Two-step synthesis of high aspect ratio gold nanorods

2006 ◽  
Vol 4 (1) ◽  
pp. 160-165 ◽  
Author(s):  
Tom Mortier ◽  
André Persoons ◽  
Thierry Verbiest
Keyword(s):  
Aspect Ratio ◽  
Gold Nanorods ◽  
High Aspect Ratio ◽  
Cetyltrimethylammonium Bromide ◽  
Surfactant Concentration ◽  
Synthetic Method ◽  
Aspect Ratios ◽  
Seed Mediated

AbstractWe describe a very simple, two-step synthetic method to prepare gold nanorods with extremely high aspect ratios (> 20) and average lengths of more than 1000 nm. The method is based on a seed-mediated growth in presence of the surfactant cetyltrimethylammonium bromide. The length and aspect ratios of the nanorods can be manipulated by varying the surfactant concentration.

scholarly journals Effective replacement of cetyltrimethylammonium bromide (CTAB) by mercaptoalkanoic acids on gold nanorod (AuNR) surfaces in aqueous solutions

Nanoscale ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 658-668 ◽  
Author(s):  
Rafael del Caño ◽  
Jose M. Gisbert-González ◽  
Jose González-Rodríguez ◽  
Guadalupe Sánchez-Obrero ◽  
Rafael Madueño ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Gold Nanorods ◽  
Ligand Exchange ◽  
Cetyltrimethylammonium Bromide ◽  
Gold Nanorod ◽  
Experimental Conditions ◽  
Seed Mediated ◽  
The Stability

The highly packed cetyltrimethylammonium bromide bilayer on the surface of gold nanorods synthesized by the seed-mediated procedure hampers the complete ligand exchange under experimental conditions that preserves the stability of the dispersions.

scholarly journals Reuse of a purified solution of cetyltrimethylammonium bromide for the synthesis of gold nanorods

2021 ◽  
Vol 21 (4) ◽  
pp. 391-398
Author(s):  
Yuliya D. Gudova ◽  
◽  
Vyacheslav I. Kochubey ◽  
Alexander A. Skaptsov ◽  
◽  
...  
Keyword(s):  
Mathematical Model ◽  
Optical Properties ◽  
Form Factor ◽  
Gold Nanorods ◽  
Cetyltrimethylammonium Bromide ◽  
The Third ◽  
Bromide Solution

We investigate the possibility of reusing CTAB solutions for repeated synthesis of gold nanorods. Three tasks have been solved. The first task is to clean the growth solutions from gold nanorods. The second task is to develop a method using a purified cetyltrimethylammonium bromide solution for repeated synthesis of gold nanorods with the same optical properties as in the initial synthesis. The third task is to test the possibility of management of the optical properties of nanorods during repeated synthesis. The polydispersity of nanorods has been estimated by form factor using developed mathematical model.

scholarly journals Compositional and Temperature Effects on the Rheological Properties of Polyelectrolyte–Surfactant Hydrogels

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 927 ◽  
Author(s):  
Jiří Smilek ◽  
Sabína Jarábková ◽  
Tomáš Velcer ◽  
Miloslav Pekař
Keyword(s):  
Ionic Strength ◽  
Rheological Properties ◽  
Surfactant Concentration ◽  
Background Electrolyte ◽  
Effect Of Temperature ◽  
Physical Interactions ◽  
Chain Conformations ◽  
Oppositely Charged ◽  
Electrolyte Ph ◽  
Positively Charged

The rheological properties of hydrogels prepared by physical interactions between oppositely charged polyelectrolyte and surfactant in micellar form were studied. Specifically, hyaluronan was employed as a negatively charged polyelectrolyte and Septonex (carbethopendecinium bromide) as a cationic surfactant. Amino-modified dextran was used as a positively charged polyelectrolyte interacting with sodium dodecylsulphate as an anionic surfactant. The effects of the preparation method, surfactant concentration, ionic strength (the concentration of NaCl background electrolyte), pH (buffers), multivalent cations, and elevated temperature on the properties were investigated. The formation of gels required an optimum ionic strength (set by the NaCl solution), ranging from 0.15–0.3 M regardless of the type of hydrogel system and surfactant concentration. The other compositional effects and the effect of temperature were dependent on the polyelectrolyte type or its molecular weight. General differences between the behaviour of hyaluronan-based and cationized dextran-based materials were attributed to differences in the chain conformations of the two biopolymers and in the accessibility of their charged groups.

scholarly journals Tailoring optical cross sections of gold nanorods at a target plasmonic resonance wavelength using bromosalicylic acid

RSC Advances ◽  
2019 ◽  
Vol 9 (28) ◽  
pp. 16028-16034
Author(s):  
Weiwei Zou ◽  
Hao Xie ◽  
Yang Ye ◽  
Weihai Ni
Keyword(s):  
Cross Sections ◽  
Gold Nanorods ◽  
Cetyltrimethylammonium Bromide ◽  
Resonance Wavelength ◽  
Surfactant Mixture ◽  
Plasmonic Resonance ◽  
Fixed Target

We demonstrate finely tailoring optical cross sections of AuNRs at a fixed target resonance wavelength, on the basis of AuNR overgrowth using a binary surfactant mixture consisting 5-bromosalicylic acid (BSA) and cetyltrimethylammonium bromide (CTAB).

Chiral Plasmonic Nanochains via the Self-Assembly of Gold Nanorods and Helical Glutathione Oligomers Facilitated by Cetyltrimethylammonium Bromide Micelles

ACS Nano ◽  
2017 ◽  
Vol 11 (4) ◽  
pp. 3463-3475 ◽  
Author(s):  
Jun Lu ◽  
Yi-Xin Chang ◽  
Ning-Ning Zhang ◽  
Ying Wei ◽  
Ai-Ju Li ◽  
...  
Keyword(s):  
Gold Nanorods ◽  
Self Assembly ◽  
Cetyltrimethylammonium Bromide ◽  
The Self

scholarly journals Cetyltrimethylammonium Bromide Silver Bromide Complex as the Capping Agent of Gold Nanorods

Langmuir ◽  
2008 ◽  
Vol 24 (17) ◽  
pp. 9219-9222 ◽  
Author(s):  
Fabien Hubert ◽  
Fabienne Testard ◽  
Olivier Spalla
Keyword(s):  
Gold Nanorods ◽  
Cetyltrimethylammonium Bromide ◽  
Silver Bromide ◽  
Capping Agent ◽  
Bromide Complex

Surface Modification of Cetyltrimethylammonium Bromide-Capped Gold Nanorods to Make Molecular Probes

Langmuir ◽  
2007 ◽  
Vol 23 (17) ◽  
pp. 9114-9119 ◽  
Author(s):  
Chenxu Yu ◽  
Leo Varghese ◽  
Joseph Irudayaraj
Keyword(s):  
Surface Modification ◽  
Gold Nanorods ◽  
Cetyltrimethylammonium Bromide ◽  
Molecular Probes

Effects of surfactant concentration on formation of high-aspect-ratio gold nanorods

2013 ◽  
Vol 407 ◽  
pp. 265-272 ◽  
Author(s):  
Yoshiko Takenaka ◽  
Youhei Kawabata ◽  
Hiroyuki Kitahata ◽  
Masaru Yoshida ◽  
Yoko Matsuzawa ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Gold Nanorods ◽  
High Aspect Ratio ◽  
Surfactant Concentration
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