Templated microwave synthesis of luminescent carbon nanofibers

Deeney, Clara; Wang, Suxiao; Belhout, Samir A.; Gowen, Aoife; Rodriguez, Brian J.; Redmond, Gareth; Quinn, Susan J.

doi:10.1039/c7ra13383a

Cited by 20 publications

(19 citation statements)

References 89 publications

(173 reference statements)

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“…The MA-CNFs were found to have an unstructured absorption across the visible region of the spectrum, as shown in Figure 3A. Excitation of the sample at 345 nm resulted in a broad emission (full-width half-maximum, or FWHM = 145 nm) centered at 455 nm, which is greater than that previously obtained for citric acid CNFs; see Figure S7 [30]. The excitation spectrum showed a maximum of 340 nm, which represents a significant Stokes shift of 115 nm.…”

Section: Resultsmentioning

confidence: 85%

“…The template-assisted method that was previously developed for the preparation of luminescent citric acid CNFs [30] was first investigated for an aqueous solution of malic acid in the presence of PEI (800 MW). The precursor solution was deposited onto an anodized alumina filter membrane with a 200-nm nominal pore diameter and 60-μm length, and allowed to load by gravity over approximately 30 min.…”

Section: Resultsmentioning

confidence: 99%

“…The ability to prepare light-activated and surface-responsive carbon fibers is expected to expand this capability through potential application as environmental sensors and improved coatings. We recently reported the first synthesis of luminescent carbon nanofibers and demonstrated their application for the sensing of metal ions [30]. This was achieved by employing a templated microwave synthesis to perform the reaction of citric acid and polyethyleneimine (PEI); the microwave synthesis of CDots using these precursors had previously been reported.…”

Section: Introductionmentioning

confidence: 99%

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Template-Assisted Synthesis of Luminescent Carbon Nanofibers from Beverage-Related Precursors by Microwave Heating

et al. 2019

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Luminescent carbon nanomaterials are important materials for sensing, imaging, and display technologies. This work describes the use of microwave heating for the template-assisted preparation of luminescent carbon nanofibers (CNFs) from the reaction of a range of beverage-related precursors with the nitrogen-rich polyethyleneimine. Highly luminescent robust carbon fibers that were 10 to 30 m in length and had a diameter of 200 nm were obtained under moderate conditions of temperature (250–260 °C) and a short reaction time (6 min). The high aspect ratio fibers showed wavelength-dependent emission that can be readily imaged using epifluorescence. The development of these multi-emissive one-dimensional (1D) carbon nanomaterials offers potential for a range of applications.

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Section: Resultsmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Template-Assisted Synthesis of Luminescent Carbon Nanofibers from Beverage-Related Precursors by Microwave Heating

et al. 2019

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“…In the last two decades, considerable studies havefocused on the surface morphology of materials at the nanometer scale, to discover their advantages‐ related properties. Nanofibers can be produced by different methods, such as wet spinning, template synthesis, drawing, phase separation, and self‐assembly . However, most of these methods have drawbacks because occasionally processes are not accessible, not suitable for certain polymers, and have no adjustment over the orientation and diameter of the fibers.…”

Section: Introductionmentioning

confidence: 99%

A Review on the Secondary Surface Morphology of Electrospun Nanofibers: Formation Mechanisms, Characterizations, and Applications

2020

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Engineering the secondary surface morphology of fibers (fibers without smooth surface and solid interior) has been attracting significant awareness in various areas and applications. Among different methods of forming nanofibers, electrospinning is the most widely adopted technique due to the ease of forming fibers with a broad range of properties and its unique advantages such as the flexibility to spin into a variety of shapes and sizes as well as adjustable porosity of electrospun structures. In this review paper, more emphasis is put on the secondary surface morphology. A comprehensive overview of the basic principles about the electrospinning process, types of electrospinning, materials, formation mechanisms, characterizations, and applications of electrospun fibers with the secondary surface morphology (e. g. the porous structure, grooved structure, wrinkled structure, rough structure, cactus structure, and hollow structure) are discussed in detail. Importantly, we believe our work can serve as guidelines for the preparations, characterizations, and applications of electrospun fibers with the secondary surface morphology.

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“…Ultrathin fibers can be formed by different techniques such as phase separation, wet spinning, drawing, self‐assembly, and template synthesis . Nevertheless, most of these techniques have drawbacks because, occasionally, procedures are not manageable, not appropriate for some polymers, and are not altered with regard to the diameter and orientation of the fibers.…”

Section: Introductionmentioning

confidence: 99%

A mini review on the generation of crimped ultrathin fibers via electrospinning: Materials, strategies, and applications

Zaarour

Zhu

Huang

et al. 2020

Polymers for Advanced Techs

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Structures modification of fibers has been attracting significant attention in various fields and applications. Among different techniques of fabricating ultrathin fibers, electrospinning is the most commonly adopted method because of the ease of forming fibers with a wide range of properties and its exceptional advantages, such as the ability to spin into different shapes and sizes, as well as the adaptable porosity of electrospun fiber webs. The crimped structure has been attracting the attention of scientific researchers owing to its unique properties (eg, spring-like behavior, supreme strain, remarkable specific surface area, good piezoelectric properties, excellent biological properties, and so on). Therefore, this study summarizes a review of the strategies and methods, reported so far, of generating electrospun crimped ultrathin fibers of various polymers. The review focuses on the polymer types, formation methods, characterizations, and applications of the electrospun crimped ultrathin fibers. We believe this work can serve as an important reference for the materials, strategies, and applications of crimped fibers.

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Templated microwave synthesis of luminescent carbon nanofibers

Abstract: This work describes the preparation of luminescent carbon nanofibers by template-assisted microwave pyrolysis of environmentally friendly precursors in aqueous solution.

Cited by 20 publications

References 89 publications

Template-Assisted Synthesis of Luminescent Carbon Nanofibers from Beverage-Related Precursors by Microwave Heating

Template-Assisted Synthesis of Luminescent Carbon Nanofibers from Beverage-Related Precursors by Microwave Heating

A Review on the Secondary Surface Morphology of Electrospun Nanofibers: Formation Mechanisms, Characterizations, and Applications

A mini review on the generation of crimped ultrathin fibers via electrospinning: Materials, strategies, and applications

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