New Light on Molecule–Nanotube Hybrids

Chen, Yani; Marty, Laëtitia; Bendiab, Nedjma

doi:10.1002/adma.201902917

Cited by 11 publications

(11 citation statements)

References 90 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[33,134] Such modifications of the properties of SWCNTs by external adsorption of various functional molecules on their walls (i.e., functionalization) fall beyond the scope of this review but has been the topic of the following review papers. [4,121,135] To give a few examples, when porphyrin oligomers stack through vdW interactions on SWCNT surfaces (Figure 8f,g), efficient energy transfer from the porphyrin to the host SWCNTs is observed, [136,137] combined with shifts of the optical transition energies that depend on the specific SWCNT chirality (Figure 8h). [133] The adsorption of various molecules on the SWCNT walls could therefore also be used as an effective tuning tool for the optical properties of SWCNTs, similarly as observed for endohedral filling, [70] in particular for air-suspended SWCNTs, in which excitons are not strongly screened.…”

Section: Swcnt Heterostructures By External Adsorption Of Moleculesmentioning

confidence: 99%

“…A particular interest in this perspective is the combination of two or more nanomaterials where the functionalities of the individual building blocks couple and yield new, fundamentally different properties, enabling a wide range of applications in diverse fields as chemistry, physics, biology, medicine, and engineering. Particularly exciting in this context are carbon nanostructures, that allow tuning the dimensions of such heterostructures into 2D (e.g., stacking of multiple layered materials on top of each other [1,2] ), 1D (using a nanotube as a template [3,4] ) or even 0D (based on fullerenes [5] and carbon nano-onions [6,7] ). In this review, we focus on carbon nanotubes (CNTs), mostly single-walled carbon nanotubes (SWCNTs), as a template for 1D heterostructures.…”

Section: Introductionmentioning

confidence: 99%

“…1D van der Waals heterostructures by organic wrapping. a) Schematic of DNA barrel on a(8,4) nanotube, composed of two hydrogenbonded anti-parallel ATTTATTTATTT strands. b) Absorption spectra of the starting SWCNT mixture (in black) and 12 chirality-sorted semiconducting SWCNTs by using different DNA sequences.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Nanotube‐Based 1D Heterostructures Coupled by van der Waals Forces

Cambré

Liu

Levshov

et al. 2021

Small

View full text Add to dashboard Cite

1D van der Waals heterostructures based on carbon nanotube templates are raising a lot of excitement due to the possibility of creating new optical and electronic properties, by either confining molecules inside their hollow core or by adding layers on the outside of the nanotube. In contrast to their 2D analogs, where the number of layers, atomic type and relative orientation of the constituting layers are the main parameters defining physical properties, 1D heterostructures provide an additional degree of freedom, i.e., their specific diameter and chiral structure, for engineering their characteristics. The current state-of-the-art in synthesizing 1D heterostructures are discussed here, in particular focusing on their resulting optical properties, and details the vast parameter space that can be used to design heterostructures with custombuilt properties that can be integrated into a large variety of applications. First, the effects of van der Waals coupling on the properties of the simplest and best-studied 1D heterostructure, namely a double-walled carbon nanotube, are described, and then heterostructures built from the inside and the outside are considered, which all use a nanotube as a template, and, finally, an outlook is provided for the future of this research field.

show abstract

Section: Swcnt Heterostructures By External Adsorption Of Moleculesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nanotube‐Based 1D Heterostructures Coupled by van der Waals Forces

Cambré

Liu

Levshov

et al. 2021

Small

View full text Add to dashboard Cite

show abstract

“…In recent years, EET involving low-dimensional periodic systems, such as graphene and single-walled carbon nanotubes (SWNTs), has been widely studied inspired by their potential applications in optoelectronic devices, including photodiodes, photovoltaics, and sensors . It has been observed in experiments that excitons can migrate (i) from organic molecules and quantum dots to SWNTs − and graphene , and (ii) from SWNTs to SWNTs. − SWNTs exhibit unique optical properties.…”

Section: Introductionmentioning

confidence: 99%

Role of Dark Excitons in the Excitation Energy Transfer of Carbon Nanotubes

et al. 2021

View full text Add to dashboard Cite

Excitation energy transfer (EET) between single-walled carbon nanotubes (SWNTs) and organic molecules and that between SWNTs have been extensively studied in experiments. Our first-principles calculations based on many-body Green’s function theory show that the Förster’s dipole–dipole coupling approximation fails for the EET of SWNTs, while higher multipole interactions play a major role. This means that donor–acceptor electronic coupling related to the dark excitons of SWNTs may sometimes become several orders of magnitude stronger than that related to the bright ones; therefore, dark excitons might govern the EET of SWNTs. This is in contrast to the general viewpoint that EET is realized through the coupling between bright excitons. Dexter exchange interactions contribute little to the EET of SWNTs even when the donor and acceptor are in close proximity to each other.

show abstract

“…Covalent functionalization of carbon nanotubes has proved to be efficient to endow them with new properties, such as enhanced solubility [1,2], compatibilization in polymer matrices [3][4][5], and photoluminescence [6,7]. One of the main procedures for covalent functionalization is the diazonium coupling reaction, which presents a high efficiency [8], a good control [7,9], and can be adapted to different environments [10].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a Poly(3-dodecylthiophene) Bearing Aniline Groups for the Covalent Functionalization of Carbon Nanotubes

et al. 2021

View full text Add to dashboard Cite

The functionalization of carbon nanotubes by polymers necessitates two steps, first their modification by oxidizing them or by covalently attaching small compounds to them, then the growth of the polymer chains from these anchors or their grafting onto them. In order to better control the process and the rate of functionalization, we develop polymers able to covalently react with the carbon nanotubes by their side chains in one step. We describe the synthesis of a copolymer of dodecylthiophene and its analogue bearing an aniline group at the end of the dodecyl side chain. This copolymer can functionalize single-walled carbon nanotubes (SWNTs) non-covalently and disperse more SWNTs than its hexyl analogues. UV-Vis and fluorescence spectroscopies show that in these non-covalent hybrids, the polymer forms p-stacked aggregates on the SWNTs. The non-covalent hybrids can be transformed into covalent ones by diazonium coupling. In these covalent hybrids the polymer is no longer p-stacked. According to Raman spectroscopy, the conformation of the poly(3-hexylthiophene) backbone is more ordered in the non-covalent hybrids than in the covalent ones.

show abstract

New Light on Molecule–Nanotube Hybrids

Cited by 11 publications

References 90 publications

Nanotube‐Based 1D Heterostructures Coupled by van der Waals Forces

Nanotube‐Based 1D Heterostructures Coupled by van der Waals Forces

Role of Dark Excitons in the Excitation Energy Transfer of Carbon Nanotubes

Synthesis of a Poly(3-dodecylthiophene) Bearing Aniline Groups for the Covalent Functionalization of Carbon Nanotubes

Contact Info

Product

Resources

About