scholarly journals Assembly/Disassembly of DNA-Au Nanoparticles: A Strategy of Intervention

2008 ◽  
Vol 2008 ◽  
pp. 1-4 ◽  
Author(s):  
I-Im S. Lim ◽  
Lingyan Wang ◽  
Uma Chandrachud ◽  
Susannah Gal ◽  
Chuan-Jian Zhong
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Molecular Recognition ◽  
Au Nanoparticles ◽  
Model System ◽  
Fine Tuning ◽  
Preliminary Results ◽  
Recognition Probe

This report describes the viability of a strategy for manipulating the assembly/disassembly processes of DNA-Au nanoparticles by molecular intervention. Using the temperature-induced assembly and disassembly processes of DNAs and gold nanoparticles as a model system, the introduction of a molecular recognition probe is demonstrated to lead to the intervention of the assembly/disassembly processes depending on its specific biorecognition. This process can be detected by monitoring the change in the optical properties of gold nanoparticles and their DNA assemblies. Implications of the preliminary results to exploration of the resulting nanostructures for fine-tuning of the interfacial reactivities in DNA-based bioassays and biomaterial engineering are also discussed.

Thermal Effects of Colloidal Suspensions of Au Nanoparticles

2009 ◽  
Vol 1172 ◽  
Author(s):  
Michael T. Carlson ◽  
Tyler S. Barton ◽  
Peter J. Tandler ◽  
Hugh H. Richardson ◽  
Alexander O. Govorov
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Laser Beam ◽  
Liquid Water ◽  
Water Droplet ◽  
Thermal Effects ◽  
Au Nanoparticles ◽  
Colloidal Suspensions ◽  
Water Droplets ◽  
Dominant Mechanism

AbstractThe thermo-optical properties of gold nanoparticles suspended in liquid water droplets have been explored. A water droplet containing suspended gold nanoparticles was irradiated with a laser beam and the efficiency of light-to-heat conversion (η) was determined. Heat generated by the optically stimulated nanoparticles was found to dissipate through several mechanisms. Convection currents were observed visually inside the droplet by the addition of silica beads (˜3-10 micrometers). This was determined to be the dominant mechanism of stirring within the droplet.

scholarly journals Optical properties and stability of small hollow gold nanoparticles

RSC Advances ◽  
2021 ◽  
Vol 11 (22) ◽  
pp. 13458-13465
Author(s):  
Ngo T. Dung ◽  
Nguyen T. N. Linh ◽  
Dinh L. Chi ◽  
Nguyen T. H. Hoa ◽  
Nguyen P. Hung ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Gold Nanoparticles ◽  
Optical Properties ◽  
Au Nanoparticles ◽  
Galvanic Replacement ◽  
Gold Salt ◽  
Galvanic Replacement Reaction ◽  
Replacement Reaction ◽  
Excellent Thermal Stability ◽  
Hollow Gold Nanoparticles

Hollow Au nanoparticles (d ≈ 16 nm) with excellent thermal stability and high photothermal conversion efficiency, which have great potential for use in photo-thermal cancer therapy, were prepared through galvanic replacement reaction between Ag nano-templates and gold salt.

Plasmonics of Au nanoparticles in a hot thermodynamic bath

Nanoscale ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 1140-1146 ◽  
Author(s):  
Michele Magnozzi ◽  
Marzia Ferrera ◽  
Lorenzo Mattera ◽  
Maurizio Canepa ◽  
Francesco Bisio
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Au Nanoparticles ◽  
Surface Effects

Ellipsometry of hot gold nanoparticles reveals deviations of their optical properties from expectations due to temperature-induced surface effects.

Molecular Recognition of Carbohydrates Using a Synthetic Receptor. A Model System to Understand the Stereoselectivity of a Carbohydrate-Carbohydrate Interaction in Water

1995 ◽  
Vol 117 (45) ◽  
pp. 11198-11204 ◽  
Author(s):  
Jesus Jimenez-Barbero ◽  
Elena Junquera ◽  
Manuel Martin-Pastor ◽  
Sunil Sharma ◽  
Cristina Vicent ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Model System ◽  
Synthetic Receptor

The Stabilization of Supported Au Nanoparticles in a Highly Sintering Environment using High Surface Free Energy Pt and Ru Cores

2021 ◽  
Author(s):  
Kerry O-Connell ◽  
John R Monnier ◽  
John Regalbuto
Keyword(s):  
Gold Nanoparticles ◽  
Free Energy ◽  
Surface Free Energy ◽  
Au Nanoparticles ◽  
High Surface ◽  
Chemical Environment ◽  
Core Shell

In an effort to stabilize gold nanoparticles which sinter rapidly in a highly corrosive chemical environment, the hydrochlorination of acetylene, bimetallic Ru@Au and Pt@Au core-shell catalysts were prepared by anchoring...

High Density Gold Nanoparticles Within Three-Dimensionally Mesoporous SBA-15: Adsorption Behavior and Optical Properties

2015 ◽  
Vol 15 (9) ◽  
pp. 7060-7067 ◽  
Author(s):  
Xiaojuan Wang ◽  
Xiaoqing Yan ◽  
Renhong Li ◽  
Liping Xiao ◽  
Guicen Ma ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
High Density ◽  
Adsorption Behavior

Fine-tuning the optical properties of aluminium and lithium quinolates through oligothiophene substituents in 2-position

2004 ◽  
Vol 147 (1-3) ◽  
pp. 175-182 ◽  
Author(s):  
A. Jaafari ◽  
V. Ouzeau ◽  
M. Ely ◽  
F. Rodriguez ◽  
A. Yassar ◽  
...  
Keyword(s):  
Optical Properties ◽  
Fine Tuning

Tunable Smart Surface of Gold Nanoparticles Achieved by Light-Controlled Molecular Recognition Effection

2008 ◽  
Vol 29 (2) ◽  
pp. 149-154 ◽  
Author(s):  
Chunhua Luo ◽  
Fang Zuo ◽  
Zhaohui Zheng ◽  
Xu Cheng ◽  
Xiaobin Ding ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Molecular Recognition ◽  
Smart Surface
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