Protein-aided formation of triangular silver nanoprisms with enhanced SERS performance

Geng, Xi; Leng, Weinan; Carter, Nathan A.; Vikesland, Peter J.; Grove, Tijana Ž.

doi:10.1039/c6tb00844e

Cited by 30 publications

(17 citation statements)

References 74 publications

(100 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Geng et al have used repetitive protein sequences called consensus sequence tetratricopeptide repeat (CTPR) protein to create Au nanoprisms of tunable edge length (Figure G). [11b] Unlike all previous cases, here proteins were just used as ligands to have better biocompatibility. Sodium bromide and 3‐(N‐morpho‐ lino)propanesulfonic acid (MOPS) were employed as the shape directing agent and mild reducing agent, respectively.…”

Section: Shape Control Of Au Nanoparticles Using Proteinsmentioning

confidence: 99%

“…Geng et al in another report have synthesized silver nanoprisms using the same proteins as described above for the case of Au with repeated CTPR sequence ( Figure A,B). [11a] First, a smaller size seed has been made and then the proteins were used as scaffold and ascorbic acid as a mild reducing agent. The resulting nanoprisms have sharp edges, which can be controlled by the amount of silver nitrate concentration in the growth step.…”

Section: Shape Control Of Ag Nanoparticles Using Proteinsmentioning

confidence: 99%

“…(A,B) Reproduced with permission. [11a] Copyright 2016, Royal Society of Chemistry. C) Scheme of the construction of a sensor array for protein identification, based on the diversity of localized surface plasmon resonance signals induced by protein‐templated photosynthesis of Ag nanoparticles.…”

Section: Shape Control Of Ag Nanoparticles Using Proteinsmentioning

confidence: 99%

“…These molecules are interesting as surface coatings, due to their biocompatibility, and they may possess different metal binding sites. Reports on protein‐directed anisotropic nanoparticle synthesis[10b,11] validate the potential usefulness of such synthesis routes, but a deeper understanding of reaction mechanisms, in particular concerning shape‐control, is still needed . Some review articles describe the role of proteins, peptides, and other biomolecules in the synthesis of inorganic nanoparticles, but without giving emphasis to shape control.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Protein‐Induced Shape Control of Noble Metal Nanoparticles

Chakraborty

Parak

2019

Adv Materials Inter

View full text Add to dashboard Cite

Shape control of nanoparticles results in tuned optical properties which are indeed beneficial for different bio‐based applications. Shape controls in major cases, governed by toxic surfactants or harsh solvent conditions. To avoid the toxicity of surfactants used as shape controlling agent, different bio‐inspired synthesis of noble metal nanoparticles are developed. Proteins play a significant role here to create anisotropic nanoparticles without the use of any toxic surfactants. Various shape and size of nanoparticles are developed so far based on proteins. This progress report summarizes such protein‐induced shape controls of different noble metal nanoparticles and explain the recent understandings of this method from mechanistic point of view. The report also explains the new opportunities in this direction in near future.

show abstract

Section: Shape Control Of Au Nanoparticles Using Proteinsmentioning

confidence: 99%

Section: Shape Control Of Ag Nanoparticles Using Proteinsmentioning

confidence: 99%

Section: Shape Control Of Ag Nanoparticles Using Proteinsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Protein‐Induced Shape Control of Noble Metal Nanoparticles

Chakraborty

Parak

2019

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

“…On the other hand, bottom-up synthesis of nanoparticles from solution enables much better control of the nanoparticles on the atomic scale, including crystallinity, size, roughness and shape78. The challenge here is to assemble the nanoparticles, which are randomly distributed in solution, into well-defined nanostructures.…”

mentioning

confidence: 99%

Light controlled assembly of silver nanoparticles

Polywka

Tückmantel

Görrn

2017

Sci Rep

View full text Add to dashboard Cite

Metal nanoparticles show a particularly strong interaction with light, which is the basis for nanoparticle plasmonics. One of the main goals of this emerging research field is the alignment of nanoparticles and their integration into sophisticated nanostructures providing a tailored interaction with light. This assembly of nanoparticles at well-controlled substrate sites often involves expensive technological approaches, such as electron beam lithography in order to fabricate the nanoparticle structures. Furthermore difficult numerical simulations are needed to predict their optical properties. Both requirements, fabrication and prediction, complicate a cost-efficient exploitation of nanoparticle plasmonics in optoelectronic devices. Here we show that silver nanoparticles deposited under exposure to visible light arrange in a way that the resulting structure shows an optimized interaction with that light. This way, the light not only controls the nanoparticle alignment with an estimated accuracy of well below 20 nm during deposition from the liquid phase, but also defines the optical properties of the growing structure, and therefore complicated prediction is not needed.

show abstract

Synthesis of Triangular Silver and Gold Nanoprisms Using Consensus Sequence Tetratricopeptide Repeat Proteins

Geng

Grove

2018

Methods in Molecular Biology

View full text Add to dashboard Cite

Anisotropic metallic nanoparticles, such as Au and Ag nanoprisms (NPSMs), have received tremendous attention for their application in catalysis, molecular sensing, signal amplification, bioimaging, and therapeutic applications due to their shape-dependent optical and physical properties. Herein, we present a protein-enabled synthetic strategy for the seeded growth of silver and gold NPSMs with low shape polydispersity, narrow size distribution, and tailored plasmonic absorbance. During the initial seed nucleation step, consensus sequence tetratricopeptide repeat (CTPR) proteins are utilized as potent stabilizers to facilitate the formation of planar-twinned Ag seeds. High yield production of well-defined Ag/Au NPSMs is achieved, respectively, by adding CTPR-stabilized Ag seeds into the growth solutions containing metal precursor, mild reducing agent, sodium halide, and additional CTPR.

show abstract

Protein-aided formation of triangular silver nanoprisms with enhanced SERS performance

Abstract: A bio-enabled strategy for the growth of well-defined silver nanoprisms with tunable plasmonic absorption and enhanced SERS performance.

Cited by 30 publications

References 74 publications

Protein‐Induced Shape Control of Noble Metal Nanoparticles

Protein‐Induced Shape Control of Noble Metal Nanoparticles

Light controlled assembly of silver nanoparticles

Synthesis of Triangular Silver and Gold Nanoprisms Using Consensus Sequence Tetratricopeptide Repeat Proteins

Contact Info

Product

Resources

About