Dispersion and individualization of boron nitride nanotubes

McWilliams, Ashleigh D. Smith; Martínez-Jiménez, Cecilia; Shumard, Kevin R.; Pasquali, Matteo; Martí, Ángel A.

doi:10.1557/s43578-022-00696-x

Cited by 11 publications

(5 citation statements)

References 131 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pristine BNNT are rarely soluble in organic and aqueous solutions since they form bundles due to van der Waals interactions during the synthesis [ 47 ]. To generate stable BNNT dispersions, different polymers such as PVP or poly(ethylene glycol) can be used [ 48 ]. To prepare stable BN dispersions, a PVP ethanol solution (1 mg/mL) was used, since PVP is not only suitable for BNNT, but also for BNNS and BNNP.…”

Section: Materials and Methodsmentioning

confidence: 99%

Investigations on the Nonlinear Optical Properties of 0D, 1D, and 2D Boron Nitride Nanomaterials in the Visible Spectral Region

Dengler

Eberle

2023

Nanomaterials

View full text Add to dashboard Cite

In recent years, boron nitride nanomaterials have attracted increasing attention due to their unique properties such as high temperature stability and high thermal conductivity. They are structurally analogous to carbon nanomaterials and can also be generated as zero-dimensional nanoparticles and fullerenes, one-dimensional nanotubes and nanoribbons, and two-dimensional nanosheets or platelets. In contrast to carbon-based nanomaterials, which have been extensively studied during recent years, the optical limiting properties of boron nitride nanomaterials have hardly been analysed so far. This work summarises a comprehensive study on the nonlinear optical response of dispersed boron nitride nanotubes, boron nitride nanoplatelets, and boron nitride nanoparticles using nanosecond laser pulses at 532 nm. Their optical limiting behaviour is characterised by means of nonlinear transmittance and scattered energy measurements and a beam profiling camera is used to analyse the beam characteristics of the transmitted laser radiation. Our results show that nonlinear scattering dominates the OL performance of all measured boron nitride nanomaterials. Boron nitride nanotubes show a large optical limiting effect, much stronger than the benchmark material, multi-walled carbon nanotubes, which makes them promising for laser protection applications.

show abstract

Section: Materials and Methodsmentioning

confidence: 99%

Investigations on the Nonlinear Optical Properties of 0D, 1D, and 2D Boron Nitride Nanomaterials in the Visible Spectral Region

Dengler

Eberle

2023

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…18 To generate stable BNNT dispersions, dierent polymers like PVP or poly(ethylene glycol) can be used. 19 To prepare stable BN dispersions, a PVP ethanol solution (1 mg/ml) was used since PVP not only suits for BNNT but also for BNNS and BNNP. The samples were sonicated in an ultrasonic bath for 3 h. In order to start from similar conditions the concentrations of BNNT, BNNS and BNNP were adjusted to have approximately the same transmittance around the used laser wavelength of 532 nm.…”

Section: Sample Preparationmentioning

confidence: 99%

0D, 1D, and 2D boron nitride nanomaterials for countermeasures in the visible spectral range

Dengler,

Eberle

2023

Technologies for Optical Countermeasures XIX

View full text Add to dashboard Cite

Many metallic and carbon-based nanomaterials exhibit nonlinear optical response under intense laser radiation, what makes them promising for laser protection devices. They strongly attenuate intense laser light, while exhibiting high transmittance at low irradiation levels. This nonlinear optical phenomenon is called optical limiting. In recent years, boron nitride nanomaterials have attracted increasing attention due to their unique properties such as high temperature stability and high thermal conductivity. They are structurally analogous to carbon nanomaterials and can also be generated as zero-dimensional nanoparticles and fullerenes, one-dimensional nanotubes and nanoribbons and two-dimensional nanosheets or platelets. In contrast to carbon-based nanomaterials, which have been extensively studied during recent years, the nonlinear optical properties of boron nitride nanomaterials have hardly been analysed so far. In this work, we present a comparative study on the nonlinear optical response of dispersed boron nitride nanotubes, boron nitride nanoplatelets, boron nitride nanoparticles and multi-walled carbon nanotubes using nanosecond laser pulses at 532 nm. Our measurements revealed that nonlinear scattering dominates the optical limiting performance of all measured boron nitride nanomaterials. Boron nitride nanotubes are a very good candidate for laser protection applications, they show a large optical limiting effect, much stronger than multi-walled carbon nanotubes.

show abstract

“…Alston et al used ultrasonication of alcohols to radically functionalize BNNT . Finally, several groups have used plasma to generate radicals to functionalize the BNNT surface . Specifically, Coulombe et al used a low-pressure, capacitvely coupled radio frequency glow discharge plasma reactor to generate hydrogen and amine-based radicals to subsequently functionalized BNNT …”

Section: Introductionmentioning

confidence: 99%

“…45 Finally, several groups have used plasma to generate radicals to functionalize the BNNT surface. 46 Specifically, Coulombe et al used a lowpressure, capacitvely coupled radio frequency glow discharge plasma reactor to generate hydrogen and amine-based radicals to subsequently functionalized BNNT. 47 The fourth approach for functionalizing BNNTs involves nitrene chemistry.…”

Section: ■ Introductionmentioning

confidence: 99%

Low-Temperature Triazine Functionalization of Boron Nitride Nanotubes for Applications from Drug Delivery to Advanced Composites

Homenick,

Bennett,

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Boron nitride nanotubes (BNNTs) are emerging nanomaterials with impressive mechanical properties and unique multifunctional properties including high thermal stability, electrical insulation, optical transparency, neutron absorption capability, and piezoelectricity. To harness the true potential of BNNTs for applications from drug delivery to advanced coatings and composites, functionalization is necessary to enhance their solubility and processability. Current functionalization approaches require aggressive reaction conditions such as long reaction times, high temperatures, high pressures, aggressive reagents, and an inert atmosphere. Herein, we present the development of a low temperature covalent functionalization method for enhanced solution processing of BNNTs utilizing a nitrene based (2 + 1) cycloaddition reaction that results in enhanced BNNT processability and solubility in N-methyl-2-pyrrolidone and N,N-dimethylformamide. Confirmation and degree of covalent functionalization are established using infrared (IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and thermal gravimetric analysis (TGA). Poly(3-hexylthiophene) (P3HT) is used to assess the quality of the BNNTs postfunctionalization to again confirm covalent functionalization. Finally, secondary functionalization of the functionalized BNNTs with propargyl chloride is achieved to demonstrate that this functionalization not only enhances the processability of the BNNTs but also results in a BNNT surface platform in which a plethora of molecules and nanomaterials can be grafted based on the application case. This nondestructive method preserves the extraordinary properties of BNNTs while opening their widespread use in many new and exciting opportunities in materials development.

show abstract

Dispersion and individualization of boron nitride nanotubes

Cited by 11 publications

References 131 publications

Investigations on the Nonlinear Optical Properties of 0D, 1D, and 2D Boron Nitride Nanomaterials in the Visible Spectral Region

Investigations on the Nonlinear Optical Properties of 0D, 1D, and 2D Boron Nitride Nanomaterials in the Visible Spectral Region

0D, 1D, and 2D boron nitride nanomaterials for countermeasures in the visible spectral range

Low-Temperature Triazine Functionalization of Boron Nitride Nanotubes for Applications from Drug Delivery to Advanced Composites

Contact Info

Product

Resources

About