Comparison between the synthesis of gold nanoparticles with sodium citrate and sodium tetraboreto

Prado, Adilson Ribeiro; Oliveira, Jairo Pinto de; Keijok, Wanderson Juvencio; Milaneze, Bárbara; Nogueira, Breno Valentim; Guimarães, Marco Cc; Pontes, María José; Ribeiro, Moisés R. N.

doi:10.1186/1753-6561-8-s4-p252

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…The report also suggested the formation of small-sized nanoparticles due to well-known strong reducing capabilities of NaBH 4 , whereas Na 3 C 6 H 5 O 7 as a mild reducing agent has good stabilizing ability. Thus, small-sized spherical nanoparticles formed by mild reducing agents were favored by the stabilization phase of the growth process . The stabilization occurs by the chemisorption of peptides as capping agents, which reduces the surface-free energy and prevents the further growth of all stabilized facets.…”

Section: Results and Discussionmentioning

confidence: 99%

“…Thus, smallsized spherical nanoparticles formed by mild reducing agents were favored by the stabilization phase of the growth process. 75 The stabilization occurs by the chemisorption of peptides as capping agents, which reduces the surface-free energy and prevents the further growth of all stabilized facets. Further addition of gold atoms at higher energy facets results in anisotropic growth leading to different-shaped nanoparticles.…”

Section: Langmuirmentioning

confidence: 99%

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Unraveling the Design Rules in Ultrashort Amyloid-Based Peptide Assemblies toward Shape-Controlled Synthesis of Gold Nanoparticles

Jain¹,

Khandelwal²,

Roy³

2019

Langmuir

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The fundamental understanding of the detailed relationship between molecular structure and material function remains a challenging task, until now. In order to understand the relative contribution of aromatic moieties and hydrophobicity of amino acid chains, we designed a library of ultrashort amyloid-like peptides based on Ar-Phe-X (where "Ar" represents different aromatic moieties and "X" represents amino acids having varied side-chain functionalities). Our research clearly indicated that the alteration in the size and hydrophobicity of the aromatic capping play a crucial role compared to the subtle change in the amino acid sequence of the dipeptide in dictating the final self-assembled structure and properties of these short peptide amphiphiles. Further, we explored our detailed understanding toward the controlled synthesis of bioinspired organic−inorganic hybrids. For the first time, we established the differential role of aliphatic and aromatic hydroxyl moieties toward the in situ shape-controlled synthesis of gold nanoparticles in three-dimensional nanostructures of hydrogels. To the best of our knowledge, it is the first report which demonstrated the formation of rectangular platonic gold nanoparticles using simple dipeptide hydrogels, exhibiting pH-dependent size control. Our study shows promising implications in bottom-up nanofabrication of next-generation nanomaterials with emergent properties.

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Section: Results and Discussionmentioning

confidence: 99%

Section: Langmuirmentioning

confidence: 99%

Unraveling the Design Rules in Ultrashort Amyloid-Based Peptide Assemblies toward Shape-Controlled Synthesis of Gold Nanoparticles

Jain¹,

Khandelwal²,

Roy³

2019

Langmuir

View full text Add to dashboard Cite

show abstract

“…The interest in this synthetic process is due to the resultant versatile citrate layer on the Au-NP surface, which allowed easy multifunctionalization of the obtained particles. 39 …”

Section: Resultsmentioning

confidence: 99%

One-step green approach for functional printing and finishing of textiles using silver and gold NPs

et al. 2018

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Enhancing the radiotherapeutic index of gamma radiation on cervical cancer cells by gold nanoparticles

Yadav

Bandyopadhyay

Chakraborty³

et al. 2019

Gold Bull

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Comparison between the synthesis of gold nanoparticles with sodium citrate and sodium tetraboreto

Cited by 7 publications

References 3 publications

Unraveling the Design Rules in Ultrashort Amyloid-Based Peptide Assemblies toward Shape-Controlled Synthesis of Gold Nanoparticles

Unraveling the Design Rules in Ultrashort Amyloid-Based Peptide Assemblies toward Shape-Controlled Synthesis of Gold Nanoparticles

One-step green approach for functional printing and finishing of textiles using silver and gold NPs

Enhancing the radiotherapeutic index of gamma radiation on cervical cancer cells by gold nanoparticles

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