scholarly journals Site-specific conjugation of antifreeze proteins onto polymer-stabilized nanoparticles

2019 ◽  
Vol 10 (23) ◽  
pp. 2986-2990 ◽  
Author(s):  
Laura E. Wilkins ◽  
Muhammad Hasan ◽  
Alice E. R. Fayter ◽  
Caroline Biggs ◽  
Marc Walker ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Hybrid Materials ◽  
Antifreeze Proteins ◽  
Growth Processes ◽  
Site Specific ◽  
Ice Growth ◽  
Polymer Stabilized

Antifreeze proteins are site-specifically conjugated onto polymer-stabilised gold nanoparticles, resulting in hybrid materials capable of modulating ice growth processes.

Redox-active polymer-nanoparticle hybrid materials

2000 ◽  
Vol 72 (1-2) ◽  
pp. 67-72 ◽  
Author(s):  
Keith J. Watson ◽  
Jin Zhu ◽  
SonBinh T. Nguyen ◽  
Chad A. Mirkin
Keyword(s):  
Gold Nanoparticles ◽  
Block Copolymers ◽  
Hybrid Materials ◽  
Ring Opening ◽  
Gel Permeation Chromatography ◽  
Polymer Chains ◽  
Electrochemical Studies ◽  
Redox Active ◽  
Gel Permeation ◽  
Current Rectification

Ring-opening metathesis polymerization was used to modify organic soluble gold nanoparticles with redox-active polymers. A gel-permeation chromatography study revealed that each nanoparticle is modified with approximately 11 polymer chains. Electrochemical studies of nanoparticles modified with block copolymers of two different redox-active groups revealed that each monomer is electrochemically accessible, while no current rectification was observed.

Hyperactive Antifreeze Proteins Promote Ice Growth before Binding to It

2021 ◽  
Author(s):  
Shaoli Cui ◽  
Weijia Zhang ◽  
Xueguang Shao ◽  
Wensheng Cai
Keyword(s):  
Antifreeze Proteins ◽  
Ice Growth

Site-Specific Deposition of Gold Nanoparticles on SWNTs

2008 ◽  
Vol 112 (35) ◽  
pp. 13437-13441 ◽  
Author(s):  
Haibin Chu ◽  
Zhong Jin ◽  
Yan Zhang ◽  
Weiwei Zhou ◽  
Lei Ding ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Site Specific

scholarly journals Ice Growth Acceleration by Antifreeze Proteins Leads to Higher Thermal Hysteresis Activity

2020 ◽  
Author(s):  
Jinzi Deng ◽  
Elana Apfelbaum ◽  
Ran Drori
Keyword(s):  
Crystal Growth ◽  
Growth Inhibition ◽  
Growth Velocity ◽  
Crystal Morphology ◽  
Thermal Hysteresis ◽  
Antifreeze Proteins ◽  
Ice Crystal ◽  
Ice Growth ◽  
Thermal Hysteresis Activity ◽  
Adsorption Rates

<p>Since some antifreeze proteins and glycoproteins (AF(G)Ps) cannot directly bind to all crystal planes, they change ice crystal morphology by minimizing the area of the crystal planes to which they cannot bind until crystal growth is halted. Previous studies found that growth along the <i>c</i>-axis (perpendicular to the basal plane, the crystal plane to which these AF(G)Ps cannot bind) is accelerated by some AF(G)Ps, while growth of other planes is inhibited. The effects of this growth acceleration on crystal morphology and on the thermal hysteresis activity are unknown to date. Understanding these effects will elucidate the mechanism of ice growth inhibition by AF(G)Ps. Using cold stages and an Infrared laser, ice growth velocities and crystal morphologies in AF(G)P solutions were measured. Three types of effects on growth velocity were found: concentration-dependent acceleration, concentration-independent acceleration, and concentration-dependent deceleration. Quantitative crystal morphology measurements in AF(G)P solutions demonstrated that adsorption rate of the proteins to ice plays a major role in determining the morphology of the bipyramidal crystal. These results demonstrate that faster adsorption rates generate bipyramidal crystals with diminished basal surfaces at higher temperatures compared to slower adsorption rates. The acceleration of growth along the <i>c</i>-axis generates crystals with smaller basal surfaces at higher temperatures leading to increased growth inhibition of the entire crystal.<a></a></p>

Self-Assembly and Encoding of Polymer-Stabilized Gold Nanoparticles with Surface-Enhanced Raman Reporter Molecules

Langmuir ◽  
2007 ◽  
Vol 23 (21) ◽  
pp. 10539-10545 ◽  
Author(s):  
Zul Merican ◽  
Tara L. Schiller ◽  
Craig J. Hawker ◽  
Peter M. Fredericks ◽  
Idriss Blakey
Keyword(s):  
Gold Nanoparticles ◽  
Self Assembly ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Polymer Stabilized

Site‐Specific Modification of Gold Nanoparticles by Underpotential Deposition of Cadmium Atoms

2018 ◽  
Vol 5 (12) ◽  
pp. 1586-1590 ◽  
Author(s):  
Mathias Brust ◽  
Silvana A. Ramírez ◽  
Gabriel J. Gordillo
Keyword(s):  
Gold Nanoparticles ◽  
Underpotential Deposition ◽  
Site Specific ◽  
Specific Modification

scholarly journals Dynamical mechanism of antifreeze proteins to prevent ice growth

2014 ◽  
Vol 90 (2) ◽  
Author(s):  
B. Kutschan ◽  
K. Morawetz ◽  
S. Thoms
Keyword(s):  
Antifreeze Proteins ◽  
Dynamical Mechanism ◽  
Ice Growth
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