Modification of Nano‐objects by Aryl Diazonium Salts

Guo, Dao‐Jun; Mirkhalaf, Fakhradin

doi:10.1002/9783527650446.ch5

Cited by 4 publications

(3 citation statements)

References 144 publications

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“…There is a great number of well-known modification approaches for the synthesis of functionalized metal NPs [ 10 – 11 ]. One of the principal functionalization methods for metal-containing NPs is based on diazonium salt chemistry [ 12 ]. Aromatic diazonium salts (ADSs) are excellent agents for the covalent grafting of organic functional groups onto carbon, metal and metal oxides surfaces [ 12 – 13 ].…”

Section: Introductionmentioning

confidence: 99%

“…One of the principal functionalization methods for metal-containing NPs is based on diazonium salt chemistry [ 12 ]. Aromatic diazonium salts (ADSs) are excellent agents for the covalent grafting of organic functional groups onto carbon, metal and metal oxides surfaces [ 12 – 13 ]. Wide applicability of ADSs is due to their ease of preparation, possibility of fast electrolytic reduction, wide range of functional groups of diazonium salt structure, and ability to form stable covalent bonding with surfaces.…”

Section: Introductionmentioning

confidence: 99%

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The convenient preparation of stable aryl-coated zerovalent iron nanoparticles

Guselnikova

Галанов

Гутаковский

et al. 2015

Beilstein J. Nanotechnol.

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SummaryA novel approach for the in situ synthesis of zerovalent aryl-coated iron nanoparticles (NPs) based on diazonium salt chemistry is proposed. Surface-modified zerovalent iron NPs (ZVI NPs) were prepared by simple chemical reduction of iron(III) chloride aqueous solution followed by in situ modification using water soluble arenediazonium tosylate. The resulting NPs, with average iron core diameter of 21 nm, were coated with a 10 nm thick organic layer to provide long-term protection in air for the highly reactive zerovalent iron core up to 180 °C. The surface-modified iron NPs possess a high grafting density of the aryl group on the NPs surface of 1.23 mmol/g. FTIR spectroscopy, XRD, HRTEM, TGA/DTA, and elemental analysis were performed in order to characterize the resulting material.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The convenient preparation of stable aryl-coated zerovalent iron nanoparticles

Guselnikova

Галанов

Гутаковский

et al. 2015

Beilstein J. Nanotechnol.

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“…The corresponding arenediazonium tosylates (4-nitrobenzenediazonium tosylate, 4-aminobenzenediazonium tosylate, and 4-carboxybenzenediazonium tosylate) were prepared according to the described procedure. [55] Preparation of Multibranched (Urchin-like) Gold NPs…”

Section: Discussionmentioning

confidence: 99%

Synthesis, Characterization, and Antimicrobial Activity of Near‐IR Photoactive Functionalized Gold Multibranched Nanoparticles

et al. 2017

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Surface‐modified gold multibranched nanoparticles (AuMs) were prepared by simple chemical reduction of gold chloride aqueous solution followed by in situ modification by using water‐soluble arenediazonium tosylates with different functional organic groups. Chemical and morphological structures of the prepared nanoparticles were examined by using transmission electron and scanning electron microscopies. The covalent grafting of organic compounds was confirmed by scanning electron microscopy with energy dispersive X‐ray spectroscopy (SEM‐EDX) and Raman spectroscopy techniques. Covalent functionalization of nanoparticles significantly expands the range of their potential uses under physiological conditions, compared with traditional non‐covalent or thiol‐based approaches. The antibacterial effect of the surface‐modified AuMs was evaluated by using Escherichia coli and Staphylococcus epidermidis bacteria under IR light illumination and without external triggering. Strong plasmon resonance on the AuMs cups leads to significant reduction of the light power needed kill bacteria under the mild conditions of continuous illumination. The effect of the surface‐modified AuMs on the light‐induced antibacterial activities was founded to be dependent on the grafted organic functional groups.

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