Gold Nanoparticle Patterning on Monomolecular Chemical Templates Fabricated by Irradiation-Promoted Exchange Reaction

Zhao, Jianli; Terfort, Andreas; Zharnikov, Michael

doi:10.1021/jp202758e

Cited by 12 publications

(31 citation statements)

References 62 publications

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“…Functionalized nanoparticles can be assembled together to form composite materials including the assemblies of inorganic nonmagnetic nanoparticles [13, 31, 34, 35] and magnetic nanoparticles that were recently explored [36–39]. For monolayer formation, Toulemon et al .…”

Section: Introductionmentioning

confidence: 99%

Nanoparticle layer deposition for highly controlled multilayer formation based on high-coverage monolayers of nanoparticles

et al. 2016

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This paper establishes a strategy for chemical deposition of functionalized nanoparticles onto solid substrates in a layer-by-layer process based on self-limiting surface chemical reactions leading to complete monolayer formation within the multilayer system without any additional intermediate layers – nanoparticle layer deposition (NPLD). This approach is fundamentally different from previously established traditional layer-by-layer deposition techniques and is conceptually more similar to well-known atomic and molecular – layer deposition processes. The NPLD approach uses efficient chemical functionalization of the solid substrate material and complementary functionalization of nanoparticles to produce a nearly 100% coverage of these nanoparticles with the use of “click chemistry”. Following this initial deposition, a second complete monolayer of nanoparticles is deposited using a copper-catalyzed “click reaction” with the azide-terminated silica nanoparticles of a different size. This layer-by-layer growth is demonstrated to produce stable covalently-bound multilayers of nearly perfect structure over macroscopic solid substrates. The formation of stable covalent bonds is confirmed spectroscopically and the stability of the multilayers produced is tested by sonication in a variety of common solvents. The 1-, 2- and 3-layer structures are interrogated by electron microscopy and atomic force microscopy and the thickness of the multilayers formed is fully consistent with that expected for highly efficient monolayer formation with each cycle of growth. This approach can be extended to include a variety of materials deposited in a predesigned sequence on different substrates with a highly conformal filling.

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Section: Introductionmentioning

confidence: 99%

Nanoparticle layer deposition for highly controlled multilayer formation based on high-coverage monolayers of nanoparticles

et al. 2016

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“…38 Similar immobilization occurred between the glycine coating of P20 NPs and the amine termini of SAMs. Finally, the samples were immersed in C10S ethanol solution (0.1 mM) for 10 min just prior to STM investigation in UHV to passivate defects within the SAMs.…”

Section: Experimental Methodsmentioning

confidence: 84%

“…S1.5 NPs were immobilized on the electrode through chemisorption between the Au cores of the NPs and the terminal thiol groups from the BMMBP SAM. 3,38 …”

Section: Experimental Methodsmentioning

confidence: 99%

“Size-Independent” Single-Electron Tunneling

Zhao

Sun

Swartz

et al. 2015

J. Phys. Chem. Lett.

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Incorporating single-electron tunneling (SET) of metallic nanoparticles (NPs) into modern electronic devices offers great promise to enable new properties; however, it is technically very challenging due to the necessity to integrate ultrasmall (<10 nm) particles into the devices. The nanosize requirements are intrinsic for NPs to exhibit quantum or SET behaviors, for example, 10 nm or smaller, at room temperature. This work represents the first observation of SET that defies the well-known size restriction. Using polycrystalline Au NPs synthesized via our newly developed solid-state glycine matrices method, a Coulomb Blockade was observed for particles as large as tens of nanometers, and the blockade voltage exhibited little dependence on the size of the NPs. These observations are counterintuitive at first glance. Further investigations reveal that each observed SET arises from the ultrasmall single crystalline grain(s) within the polycrystal NP, which is (are) sufficiently isolated from the nearest neighbor grains. This work demonstrates the concept and feasibility to overcome orthodox spatial confinement requirements to achieve quantum effects.

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“…The synthetic procedure for NPHT was followed as per the synthetic procedure described previously [18]. A suspension of K 2 CO 3 (5.45 g, 39.49 mmol) in a solution of 1 (2.74 g, 19.73 mmol), 1, 6-dibromohexane (9.63 g, 39.47 mmol) in MeCN (150 mL) was heated under reflux for 24 h with a CaCl 2 guard.…”

Section: Synthesis Of 1-(6-bromo-hexyloxy)-4-nitro-benzene (2)mentioning

confidence: 99%

“…[14][15][16][17] The modification of the chemical functionality of the SAM can be achieved a number of ways, through the energetic desorption and subsequent replacement of molecules, the mechanical desorption of molecules, the microcontact printing of a molecular template and energetically induced chemical reactions. [18][19][20][21] However the step is achieved, a number of the processes result in either an off or on preference for nanoparticle attachment, meaning fine control over the surface density of nanoparticles cannot be achieved. It has previously been reported by ourselves and other groups that EBL and X-ray irradiation can induce chemical changes on surfaces such as the reduction of the aromatic NO 2 group of a SAM to that of an NH 2 group.…”

Section: Introductionmentioning

confidence: 99%

Controlling gold nanoparticle assembly on electron beam-reduced nitrophenyl self-assembled monolayers via electron dose

Leigh

Prieto

Bowen

et al. 2013

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Electron Beam Lithography is a well-established tool suitable for the modification of substrate surface chemistry. It therefore follows that the deposition and self-assembly of nanoparticles on a surface can be directed using this method. This work explores the effect of electron dose on the electron beam lithographic patterning of selfassembled monolayers (SAMs) on gold surfaces. Electron beam irradiation of the sample induces conversion of the SAM terminal functional aromatic nitro (NO 2 ) moieties to aromatic amino (NH 2 ) moieties. The cationic NH 2 functionalised regions direct the site-specific assembly of anionic citrate-passivated gold nanoparticles in aqueous solution at pH 4.5. Control of nanoparticle attachment to the SAM is demonstrated over the exposure range 5,000-125,000 μC/cm 2 . Overexposure led to significant numbers of secondary electrons reaching the surface, causing conversion of functional aromatic moieties outside of the regions irradiated, which reduced feature quality and regional selectivity of adsorption.

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Gold Nanoparticle Patterning on Monomolecular Chemical Templates Fabricated by Irradiation-Promoted Exchange Reaction

Cited by 12 publications

References 62 publications

Nanoparticle layer deposition for highly controlled multilayer formation based on high-coverage monolayers of nanoparticles

Nanoparticle layer deposition for highly controlled multilayer formation based on high-coverage monolayers of nanoparticles

“Size-Independent” Single-Electron Tunneling

Controlling gold nanoparticle assembly on electron beam-reduced nitrophenyl self-assembled monolayers via electron dose

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