Evolution of Size and Shape in the Colloidal Crystallization of Gold Nanoparticles

2007 ◽  
Vol 129 (25) ◽  
pp. 7793-7798 ◽  
Author(s):  
Owen C. Compton ◽  
Frank E. Osterloh
Keyword(s):  
Gold Nanoparticles ◽  
Size And Shape ◽  
Colloidal Crystallization

scholarly journals Size and Shape-Dependent Antimicrobial Activities of Silver and Gold Nanoparticles: A Model Study as Potential Fungicides

Molecules ◽  
2020 ◽  
Vol 25 (11) ◽  
pp. 2682 ◽  
Author(s):  
Francis J. Osonga ◽  
Ali Akgul ◽  
Idris Yazgan ◽  
Ayfer Akgul ◽  
Gaddi B. Eshun ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Pathogenic Fungi ◽  
Antimicrobial Activities ◽  
Plant Diseases ◽  
Production Plant ◽  
Silver And Gold Nanoparticles ◽  
Size And Shape ◽  
Model Study ◽  
Pathogenic Microbes ◽  
Bacteria And Fungi

Plant-based pathogenic microbes hinder the yield and quality of food production. Plant diseases have caused an increase in food costs due to crop destruction. There is a need to develop novel methods that can target and mitigate pathogenic microbes. This study focuses on investigating the effects of luteolin tetraphosphate derived silver nanoparticles (LTP-AgNPs) and gold nanoparticles (LTP-AuNPs) as a therapeutic agent on the growth and expression of plant-based bacteria and fungi. In this study, the silver and gold nanoparticles were synthesized at room temperature using luteolin tetraphosphate (LTP) as the reducing and capping agents. The synthesis of LTP-AgNPs and LTP-AuNP was characterized by Transmission Electron Microscopy (TEM) and size distribution. The TEM images of both LTP-AgNPs and LTP-AuNPs showed different sizes and shapes (spherical, quasi-spherical, and cuboidal). The antimicrobial test was conducted using fungi: Aspergillus nidulans, Trichaptum biforme, Penicillium italicum, Fusarium oxysporum, and Colletotrichum gloeosporioides, while the class of bacteria employed include Pseudomonas aeruginosa, Aeromonas hydrophila, Escherichia coli, and Citrobacter freundii as Gram (−) bacteria, and Listeria monocytogenes and Staphylococcus epidermidis as Gram (+) bacterium. The antifungal study demonstrated the selective size and shape-dependent capabilities in which smaller sized spherical (9 nm) and quasi-spherical (21 nm) AgNPs exhibited 100% inhibition of the tested fungi and bacteria. The LTP-AgNPs exhibited a higher antimicrobial activity than LTP-AuNPs. We have demonstrated that smaller sized AgNPs showed excellent inhibition of A. nidulans growth compared to the larger size nanoparticles. These results suggest that LTP-AuNP and LTP-AgNPs could be used to address the detection and remediation of pathogenic fungi, respectively.

Synthesis of gold nanoparticles using N,N-dimethylacetoacetamide: Size and shape control by the reaction temperature

2006 ◽  
Vol 6 (2) ◽  
pp. 216-218 ◽  
Author(s):  
Jae Hee Song ◽  
Yeong-Joon Kim ◽  
Ji-Soo Kim
Keyword(s):  
Gold Nanoparticles ◽  
Reaction Temperature ◽  
Shape Control ◽  
Size And Shape

Size and shape approximation of gold nanoparticles using theoretical modelling

2015 ◽  
Author(s):  
Divya Goyal ◽  
Suman ◽  
G. S. S. Saini ◽  
Rajesh Kumar
Keyword(s):  
Gold Nanoparticles ◽  
Theoretical Modelling ◽  
Size And Shape ◽  
Shape Approximation

Transdermal delivery of poly(ethylene glycol)-co-oleylamine modified gold nanoparticles: Effect of size and shape

2019 ◽  
Vol 224 ◽  
pp. 22-28 ◽  
Author(s):  
Pa Fan Hsiao ◽  
Hsieh-Chih Tsai ◽  
Sydney Peng ◽  
Adhimoorthy Prasannan ◽  
Ting-Cheng Tang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Ethylene Glycol ◽  
Transdermal Delivery ◽  
Poly Ethylene Glycol ◽  
Size And Shape ◽  
Poly Ethylene

Synthesis of Gold Nanoparticles in Liquid Polyethylene Glycol by Sputter Deposition and Temperature Effects on their Size and Shape

2011 ◽  
Vol 115 (8) ◽  
pp. 3279-3285 ◽  
Author(s):  
Yoshikiyo Hatakeyama ◽  
Takeshi Morita ◽  
Satoshi Takahashi ◽  
Kei Onishi ◽  
Keiko Nishikawa
Keyword(s):  
Gold Nanoparticles ◽  
Polyethylene Glycol ◽  
Temperature Effects ◽  
Sputter Deposition ◽  
Size And Shape

Enhanced Control of Size and Shape of Gold Nanoparticles Produced by a Simple and Scalable Thermal Process

2019 ◽  
Author(s):  
Nathan J. Ray ◽  
Jae H. Yoo ◽  
Hoang T. Nguyen ◽  
Michael A. Johnson ◽  
Salmaan H. Baxamusa ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Thermal Process ◽  
Size And Shape

Formation of size and shape tunable gold nanoparticles in solution by bio-assisted synthesis with bovine serum albumin in native and denaturated state

2011 ◽  
Vol 129 (3) ◽  
pp. 939-942 ◽  
Author(s):  
Monica Focsan ◽  
Ana Maria Gabudean ◽  
Valentin Canpean ◽  
Dana Maniu ◽  
Simion Astilean
Keyword(s):  
Gold Nanoparticles ◽  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Bovine Serum ◽  
Size And Shape
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