Iron Nanoparticles Derived from Iron-Complexed Polymethylglutarimide To Produce High-Quality Lithographically Defined Single-Walled Carbon Nanotubes

Lu, Jennifer; Moll, N.; Fu, Qiang; Liu, Jie

doi:10.1021/cm048280v

Cited by 15 publications

(11 citation statements)

References 23 publications

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“…While investigating a novel method to generate high-density and uniformly distributed carbon nanotube (CNT) mats, Lu et al [ 24 ] employed spin-coating to prepare a film of PMGI loaded with various iron precursors (Fe 3+ chloride, nitrate or acac, and the organometallic complex ferrocene) for the templated formation of IONPs, subsequently exploited as catalysts for CNT growth. Following the trend of using polymeric templates with specific characteristics, PMGI, a polymer widely used in the bilayer lift-off process, was expected to form complexes with Fe 3+ ions by multidentate coordination.…”

Section: In Situ Synthesis With Polymers In Solmentioning

confidence: 99%

Templated Synthesis of Magnetic Nanoparticles through the Self-Assembly of Polymers and Surfactants

2014

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Abstract:The synthesis of superparamagnetic nanoparticles (NPs) for various technological applications continues to be an interesting research topic. The successful application of superparamagnetic NPs to each specific area typically depends on the achievement of high magnetization for the nanocrystals obtained, which is determined by their average size and size distribution. The size dispersity of magnetic NPs (MNPs) is markedly improved when, during the synthesis, the nucleation and growth steps of the reaction are well-separated. Tuning the nucleation process with the assistance of a hosting medium that encapsulates the precursors (such as self-assembled micelles), dispersing them in discrete compartments, improves control over particle formation. These inorganic-organic hybrids inherit properties from both the organic and the inorganic materials, while the organic component can also bring a specific functionality to the particles or prevent their aggregation in water. The general concept of interest in this review is that the shape and size of the synthesized MNPs can be controlled to some extent by the geometry and the size of the organic templates used, which thus can be considered as molds at the nanometer scale, for both porous continuous matrices and suspensions.

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Section: In Situ Synthesis With Polymers In Solmentioning

confidence: 99%

Templated Synthesis of Magnetic Nanoparticles through the Self-Assembly of Polymers and Surfactants

2014

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“…12 In the field of SWNT devices, PMGI has been shown to have excellent properties as a carrier material for iron catalyst particles for SWNT growth. 13 To our knowledge, however, there have been no reports of its use in an improved photolithographic process for fabricating contacts to high quality SWNT devices. After contact patterning by photolithography based on a PMGI-Shipley 1813 bilayer, we see no evidence of an undesirable scum layer.…”

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confidence: 99%

Optimized photolithographic fabrication process for carbon nanotube devices

2011

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We have developed a photolithographic process for the fabrication of large arrays of single walled carbon nanotube transistors with high quality electronic properties that rival those of transistors fabricated by electron beam lithography. A buffer layer is used to prevent direct contact between the nanotube and the novolac-based photoresist, and a cleaning bake at 300C effectively removes residues that bind to the nanotube sidewall during processing. In situ electrical measurement of a nanotube transistor during a temperature ramp reveals sharp decreases in the ON-state resistance that we associate with the vaporization of components of the photoresist. Data from nearly 2000 measured nanotube transistors show an average ON-state resistance of 250 ± 100 kΩ. This new process represents significant progress towards the goal of high-yield production of large arrays of nanotube transistors for applications including chemical sensors and transducers, as well as integrated circuit components

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“…The reported synthetic methods for the preparation of magnetic silica core-shell nanoparticles include layer-by-layer assembly [17], sonochemical deposition [20], electrostatic adsorption [21], ferrite plating [22], aerosol assisted synthesis [23], hydrothermal chemical-vapour deposition [24], sol-gel [25], phase transfer [26], micro-contact printing [27], spin coating [28], micro-emulsion route [29], and bio-polymer template method [30]. There are a number of disadvantages associated with the existing synthetic methods.…”

Section: Introductionmentioning

confidence: 99%

A novel thermal decomposition approach for the synthesis of silica-iron oxide core–shell nanoparticles

Kishore

Jeevanandam

2012

Journal of Alloys and Compounds

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Iron Nanoparticles Derived from Iron-Complexed Polymethylglutarimide To Produce High-Quality Lithographically Defined Single-Walled Carbon Nanotubes

Cited by 15 publications

References 23 publications

Templated Synthesis of Magnetic Nanoparticles through the Self-Assembly of Polymers and Surfactants

Templated Synthesis of Magnetic Nanoparticles through the Self-Assembly of Polymers and Surfactants

Optimized photolithographic fabrication process for carbon nanotube devices

A novel thermal decomposition approach for the synthesis of silica-iron oxide core–shell nanoparticles

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