Interaction of Luminescent Defects in Carbon Nanotubes with Covalently Attached Stable Organic Radicals

Berger, F.; Sousa, J. Alejandro de; Zhao, Shen; Zorn, Nicolas; Yumin, Abdurrahman Ali El; García, Aleix Quintana; Settele, Simon; Högele, Alexander; Crivillers, Núria; Zaumseil, Jana

doi:10.1021/acsnano.0c10341

Cited by 22 publications

(30 citation statements)

References 68 publications

(155 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[25,172] The notion of using the ratio of the E 11 to defect (E 11 * or E 11 * -) emission intensity as a measure for additional nonradiative decay channels close to the sp 3 defects was further explored by Berger et al with polymer-wrapped (6,5) SWCNTs that were covalently functionalized with the stable perchlorotriphenylmethyl (PTM) radical via diazonium chemistry. [173] The neutral open shell system of the PTM substituent at the sp 3 defect resulted in lower defect emission as well as shorter fluorescence lifetimes compared to nanotubes with the same number of defects but with a bromoaryl substituent. Again, the emission wavelengths were very similar.…”

Section: (9 Of 14)mentioning

confidence: 97%

See 1 more Smart Citation

Luminescent Defects in Single‐Walled Carbon Nanotubes for Applications

Zaumseil

2021

Advanced Optical Materials

Self Cite

View full text Add to dashboard Cite

most applications, only semiconducting nanotubes and ideally only one (n,m) species (monochiral) are desired. This technological need has pushed the search for more controlled and selective growth of SWCNTs [5,6] and even more importantly fueled the development of post-growth purification and sorting of the different nanotube types and chiralities. Various, quite different techniques, such as gelchromatography, [7][8][9] aqueous two-phase separation (ATPE), [10][11][12] and selective polymer-wrapping, [13][14][15][16][17] now make it possible to produce and work with sufficiently large amounts of not only purely semiconducting nanotubes of a certain diameter range but also monochiral nanotubes and even enantiomerically pure samples. [18,19] This high degree of purification and hence the availability of nanotubes as a material with reproducible properties has been critical for applications in electronics [20,21] and energy conversion, [22,23] as well as imaging [24,25] and sensing [26,27] based on the near-infrared photoluminescence (PL) of SWCNTs and its modulation. However, an important paradigm shift occurred when it became clear that defects in the sp 2 carbon lattice of nanotubes are not always detrimental to the photoluminescence yield, but can indeed lead to new electronic states with highly interesting and useful optical properties. [28][29][30] These specific defects, which are variably named sp 3 defects, luminescent defects, organic color centers or quantum defects [31][32][33][34][35] have been at the heart of many recent studies on carbon nanotubes and promise a wide range of potential applications from single-photon emission to in vivo super-resolution imaging. This review will briefly introduce the underlying photo physics and properties of these defects, peruse recent progress in their controlled creation and discuss the various potential applications in detail.Semiconducting single-walled carbon nanotubes show extraordinary electronic and optical properties, such as high charge carrier mobilities and diameter-dependent near-infrared photoluminescence. The introduction of sp 3 defects in the carbon lattice of these nanotubes creates new electronic states that result in even further red-shifted photoluminescence with longer lifetimes and higher photoluminescence yield. These luminescent defects or organic color centers can be tuned chemically by controlling the precise binding configuration and the electrostatic properties of the attached substituents. This review covers the basic photophysics of luminescent sp 3 defects, synthetic methods for their controlled formation and discusses their application as near-infrared single-photon emitters at room temperature, in electroluminescent devices, as versatile optical sensors, and as fluorophores for bioimaging and potential super-resolution microscopy.

show abstract

Section: (9 Of 14)mentioning

confidence: 97%

Section: (9 Of 14)mentioning

confidence: 99%

Luminescent Defects in Single‐Walled Carbon Nanotubes for Applications

Zaumseil

2021

Advanced Optical Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…Luminescent defects (or organic color centers) 7 have expanded the emission range of SWNTs further toward the near-infrared and opened up applications in sensing 14,15 , in vivo imaging within the second biological window 16,17 , and as quantum-light sources with room-temperature single-photon emission [18][19][20][21][22] . Various synthetic methods (e.g., radical-based reactions with aryl diazonium salts) allow for different functional groups to be attached to the SWNTs, which lead to additional small energetic shifts 18,[23][24][25][26] . However, defect emission in general occurs over a wide spectral range (e.g., from 1100 to 1350 nm for (6,5) SWNTs).…”

mentioning

confidence: 99%

Synthetic control over the binding configuration of luminescent sp3-defects in single-walled carbon nanotubes

et al. 2021

Self Cite

View full text Add to dashboard Cite

The controlled functionalization of single-walled carbon nanotubes with luminescent sp3-defects has created the potential to employ them as quantum-light sources in the near-infrared. For that, it is crucial to control their spectral diversity. The emission wavelength is determined by the binding configuration of the defects rather than the molecular structure of the attached groups. However, current functionalization methods produce a variety of binding configurations and thus emission wavelengths. We introduce a simple reaction protocol for the creation of only one type of luminescent defect in polymer-sorted (6,5) nanotubes, which is more red-shifted and exhibits longer photoluminescence lifetimes than the commonly obtained binding configurations. We demonstrate single-photon emission at room temperature and expand this functionalization to other polymer-wrapped nanotubes with emission further in the near-infrared. As the selectivity of the reaction with various aniline derivatives depends on the presence of an organic base we propose nucleophilic addition as the reaction mechanism.

show abstract

“…closer to standard telecom wavelengths, advancing the prospects of applications as single-photon sources in quantum information processing [61]. Berger and co-workers [62] reported that a net spin can be carried out using the covalent functionalization of purified semiconducting SWCNTs with stable organic radicals (perchlorotriphenylmethyl, PTM). Their results confirmed the fact that the existence of the radical-enhanced intersystem crossing leads to an increased triplet exciton population, which could provide access to elusive triplet manifold in SWCNTs [62].…”

Section: Carbon Nanotubesmentioning

confidence: 99%

Chip-Scale Quantum Emitters

Ghamsari

2021

Quantum Reports

View full text Add to dashboard Cite

Integration of chip-scale quantum technology was the main aim of this study. First, the recent progress on silicon-based photonic integrated circuits is surveyed, and then it is shown that silicon integrated quantum photonics can be considered a compelling platform for the future of quantum technologies. Among subsections of quantum technology, quantum emitters were selected as the object, and different quantum emitters such as quantum dots, 2D materials, and carbon nanotubes are introduced. Later on, the most recent progress is highlighted to provide an extensive overview of the development of chip-scale quantum emitters. It seems that the next step towards the practical application of quantum emitters is to generate position-controlled quantum light sources. Among developed processes, it can be recognized that droplet–epitaxial QD growth has a promising future for the preparation of chip-scale quantum emitters.

show abstract

Interaction of Luminescent Defects in Carbon Nanotubes with Covalently Attached Stable Organic Radicals

Cited by 22 publications

References 68 publications

Luminescent Defects in Single‐Walled Carbon Nanotubes for Applications

Luminescent Defects in Single‐Walled Carbon Nanotubes for Applications

Synthetic control over the binding configuration of luminescent sp3-defects in single-walled carbon nanotubes

Chip-Scale Quantum Emitters

Contact Info

Product

Resources

About