Peptide template effects for the synthesis and catalytic application of Pdnanoparticle networks

Jakhmola, Anshuman; Bhandari, Ranjana; Pacardo, Dennis B.; Knecht, Marc R.

doi:10.1039/b922018f

Cited by 51 publications

(184 citation statements)

References 53 publications

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“…For these materials, a broad absorbance spectrum is noted that increases in intensity toward lower wavelengths. In general, such a spectrum is consistent with colloidal suspensions of Pd nanomaterials, 43 including the Pd materials formed using the parent R5 peptide, 4 suggesting such structures could result by using the truncated sequence. Furthermore, the intensity of the absorbance across the spectrum increases for the three different samples proportional to the Pd:peptide ratio used in the synthesis.…”

Section: ■ Introductionmentioning

confidence: 68%

“…By comparing the TOF values for the T1-, T2-, T1A-, and T2A-based systems with the results previously observed for the R5-templated materials, 4 it is evident that enhanced reactivity is observed from those materials generated using the T1 system at lower Pd/peptide ratios. This reactivity difference is likely to arise from the peptide scaffold morphology, as the structure of the materials is roughly the same for each Pd/peptide ratio prepared using all of the truncated templates.…”

Section: ■ Introductionmentioning

confidence: 76%

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Isolation of Template Effects That Control the Structure and Function of Nonspherical, Biotemplated Pd Nanomaterials

Bhandari

Knecht

2012

Langmuir

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Advances in nanotechnology have indicated that the passivant and the inorganic surface play a pivotal role in controlling the structure/function relationship of materials. Beyond standard materials-based methods, bioligands have recently demonstrated the production of unique nanomaterial morphologies for application under ambient conditions for multiple activities, such as catalysis and biosensing. We have recently demonstrated that a biotemplate technique could be employed to produce spherical and linear Pd nanostructures in water using a self-assembling peptide framework. The materials possessed high catalytic reactivity that was controlled by the three-dimensional structure of the composite materials. To investigate the effect of the peptide template on the reactivity of Pd nanostructures, an in depth analysis of the catalytic activity of Pd nanostructures fabricated via truncated templates is presented. The new templates were designed from portions of the original framework, which demonstrated unique synthetic and functionality control. Two different reactions, Stille C-C coupling and 4-nitrophenol reduction, were employed to ascertain the effect of template structure on the reactivity of synthesized Pd nanomaterials via changes in reagent diffusion through the bioscaffold. The results indicate that the peptide framework plays an important role and could be used to tune and optimize the functionality of the final composite materials for the target application.

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Section: ■ Introductionmentioning

confidence: 68%

Section: ■ Introductionmentioning

confidence: 76%

Isolation of Template Effects That Control the Structure and Function of Nonspherical, Biotemplated Pd Nanomaterials

Bhandari

Knecht

2012

Langmuir

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“…Up to now, various inorganic nanostructures have been successfully made via self-assembled biomolecular templates including but not limited to metal (e.g., Au, [19] Ag, [20] Cu, [21] Ni, [22] Pt, [23] Pd [24] ), metal/ transition metal oxide (e.g., ZnO, [25] Fe 3 O 4 , [26] Ga 2 O 3 , [27] BaTiO 3 [28] ), and semiconductors (e.g., ZnS, [29] CdS, PbS, [30] and silica [31] ). To this end, self-assembled nanostructures using small biomolecules as building blocks provides one solution to the preparation of biotemplates for the fabrication of nanocrystals.…”

Section: Self-assembled Small Biomoleculementioning

confidence: 99%

“…He is particularly interested in realization of artificial neuron and artificial brain structure using "bottom-up" self-assembly. Up to now, various inorganic nanostructures have been successfully made via self-assembled biomolecular templates including but not limited to metal (e.g., Au, [19] Ag, [20] Cu, [21] Ni, [22] Pt, [23] Pd [24] ), metal/ transition metal oxide (e.g., ZnO, [25] Fe 3 O 4 , [26] Ga 2 O 3 , [27] BaTiO 3 [28] ), and semiconductors (e.g., ZnS, [29] CdS, PbS, [30] and silica [31] ). This section will focus specifically on the self-assembled biotemplates from peptides, lipids, and DNA.…”

Section: Self-assembled Small Biomoleculementioning

confidence: 99%

Organic Templates for Inorganic Nanocrystal Growth

You

Liang

et al. 2019

Energy & Environ Materials

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Nanocrystals provide a variety of size and shape-dependent properties with applications in a wide range of areas, gaining much attention in the past few years. However, due to the nature of the kinetic nanocrystal growth, the procedures often require strict experimental conditions and the shape and size of nanocrystals are difficult to control. In such context, organic templates, which are artificially modified or synthesized, can direct inorganic nanocrystal nucleation and growth to achieve desired shape, size and ultimately properties. In this review article, two general categories of organic templates used for making inorganic nanomaterials are discussed: biotemplates (e.g., peptide, lipid, DNA, and capsid) and block copolymer templates (e.g., block copolymer micelles, star-like block copolymer unimicelles). The goal of this review is to bridge these gaps and help foster a greater awareness of the range and applicability of different organic templating techniques within the field of nanotechnology. REVIEW Organic TemplateEnergy Environ. Mater. 2019, 2, 38-54

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“…These nanoparticles, because of their high surface area and unique magnetic properties, have a broad range of potential uses in disciplines including physics, biomedicine, biotechnology and materials science and in catalysis support applications . In this regard, MNP‐supported catalysts have been efficiently employed as heterogeneous catalysts.…”

Section: Introductionmentioning

confidence: 99%

Palladium supported on modified magnetic nanoparticles: a phosphine‐free and heterogeneous catalyst for Suzuki and Stille reactions

Ghorbani‐Choghamarani

Norouzi

2015

Applied Organom Chemis

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An efficient magnetic nanoparticle-supported palladium (Fe 3 O 4 /SiO 2 -PAP-Pd) catalyst is reported for the Suzuki cross-coupling and Stille reactions. This method provides a novel and much improved modification of the Suzuki and Stille coupling reactions in terms of phosphine-free catalyst, short reaction time, clean reaction and small quantity of catalyst. Another important feature of this method is that the catalyst can be easily recovered from the reaction mixture and reused with no loss of its catalytic activity.

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Peptide template effects for the synthesis and catalytic application of Pdnanoparticle networks

Cited by 51 publications

References 53 publications

Isolation of Template Effects That Control the Structure and Function of Nonspherical, Biotemplated Pd Nanomaterials

Isolation of Template Effects That Control the Structure and Function of Nonspherical, Biotemplated Pd Nanomaterials

Organic Templates for Inorganic Nanocrystal Growth

Palladium supported on modified magnetic nanoparticles: a phosphine‐free and heterogeneous catalyst for Suzuki and Stille reactions

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