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Room-temperature quantum emission from interface excitons in mixed-dimensional heterostructures
Interlayer excitons in 2D homo- and heterostructures have been intensively investigated due to their emerging optical properties. Here, the authors report the observation of interface excitons in 1D/2D carbon nanotube/WSe2 heterostructures, showing evidence of photon antibunching at room temperature.
- N. Fang
- , Y. R. Chang
- & Y. K. Kato
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Boosting the electron beam transmittance of field emission cathode using a self-charging gate
Gate-type field emission cathodes based on carbon nanotubes face challenges of achieving high E-beam transmittance to avoid the collision with the gate to form irreversible damages. Here, the authors present a self-charging gate to control the E-beam trajectory by inducing a local electric field.
- Dongyang Xiao
- , Huanhuan Du
- & Peiyi Song
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Article
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Ratiometric fluorescent sensing of pyrophosphate with sp³-functionalized single-walled carbon nanotubes
Inorganic pyrophosphate is a key molecule in many biological processes. Here, the authors develop an optical sensor that enables its ratiometric detection in the near infrared with functionalized single-walled carbon nanotubes.
- Simon Settele
- , C. Alexander Schrage
- & Jana Zaumseil
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Synthesis of inter-[60]fullerene conjugates with inherent chirality
Inter-fullerene conjugates are non-naturally occurring carbon allotropes. Here the authors report on the chemical synthesis and solid-state structure of three inter-[60]fullerene hybrids with inherent chirality.
- Yoshifumi Hashikawa
- , Shu Okamoto
- & Yasujiro Murata
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Ultrasmall single-layered NbSe2 nanotubes flattened within a chemical-driven self-pressurized carbon nanotube
The chemical-driven large pressure arising inside carbon nanotubes creates energetically stable, flattened, single-layered NbSe2 nanotubes with enhanced intermolecular electronic interactions, suggesting a chemical approach to produce materials with tailored structural and electronic properties.
- Yaxin Jiang
- , Hao Xiong
- & Fei Wei
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A stabilization rule for metal carbido cluster bearing μ3-carbido single-atom-ligand encapsulated in carbon cage
Trimetallic carbido clusterfullerenes (CCFs) represent the simplest metal carbido complexes with the ligands being only carbon atoms, but the formation prerequisite is unclear. Herein, the authors report the syntheses of three novel vanadium(V)-based CCFs featuring high vanadium valence state and propose a supplemental Octet Rule
- Runnan Guan
- , Jing Huang
- & Su-Yuan Xie
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A hard molecular nanomagnet from confined paramagnetic 3d-4f spins inside a fullerene cage
Shortening the inter-spin distance is an effective way to enhance magnetic coupling. However, it is typically challenging to change the inter-ion distance in most magnetic systems. Here, Huang et al present a strategy for enhancing magnetic interactions, by confining a molecular magnetic system inside a carbon fullerene cage, leading to enhanced magnetic properties.
- Chenli Huang
- , Rong Sun
- & Song Gao
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Resonant exciton transfer in mixed-dimensional heterostructures for overcoming dimensional restrictions in optical processes
The variable bandgap of carbon nanotubes can be utilized for band engineering of van der Waals interfaces. Here the authors report on resonant exciton transfer and band alignment transition in carbon nanotube/tungsten diselenide heterostructures.
- N. Fang
- , Y. R. Chang
- & Y. K. Kato
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Enhancement of short/medium-range order and thermal conductivity in ultrahard sp3 amorphous carbon by C70 precursor
sp3 amorphous carbon exhibits exceptional mechanical, thermal, and optical properties, but cannot be synthesized using traditional processes. Here authors report a nearly pure sp3−hybridized amorphous carbon synthesized from C70 which shows more short/medium-range order and enhanced thermal conductivity compared to C60.
- Yuchen Shang
- , Mingguang Yao
- & Bingbing Liu
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Engineering chirality at wafer scale with ordered carbon nanotube architectures
Methods for generating macroscopic chiral matter struggle with limited scalability. Here, the authors show two vacuum filtration methods - twist stacking and mechanical rotation - to align carbon nanotubes into chiral structures at wafer scale with tunable circular dichroism.
- Jacques Doumani
- , Minhan Lou
- & Weilu Gao
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Actinide-lanthanide single electron metal-metal bond formed in mixed-valence di-metallofullerenes
Understanding metal-metal bonding involving f-block elements has been challenging. Here, the authors report a series of mixed-valence di-metallofullerenes which feature single electron actinide-lanthanide metal-metal bonds.
- Yingjing Yan
- , Laura Abella
- & Ning Chen
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Mechanism of the noncatalytic oxidation of soot using in situ transmission electron microscopy
In this work, authors investigate mechanisms of noncatalytic soot oxidation and establish models applicable to different types of soot based on the particles oxidation behaviour using in-situ transmission electron microscopy.
- Ming Gao
- , Yongjun Jang
- & Fuchen Wang
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Extending on-surface synthesis from 2D to 3D by cycloaddition with C60
On-surface synthesis (OSS) defines a special opportunity to investigate intermolecular coupling at. sub-molecular level and has delivered many appealing polymers but so-far OSS is limited to the. lateral covalent bonding of molecular precursors. Here, the authors demonstrate cycloaddition. between C60 and an aromatic compound allowing covalent coupling perpendicular to the surface and multiple non-planar covalent coupling of C60.
- Pengcheng Ding
- , Shaoshan Wang
- & Miao Yu
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Embedded nano spin sensor for in situ probing of gas adsorption inside porous organic frameworks
Spin-based sensors have attracted attention due to their high sensitivities. Here authors present a fullerene-based nano spin sensor for in-situ sensing of gas adsorption in porous organic frameworks, demonstrating the potential applications of molecular spin systems in quantum sensing.
- Jie Zhang
- , Linshan Liu
- & Taishan Wang
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An electroluminescent and tunable cavity-enhanced carbon-nanotube-emitter in the telecom band
Here, the authors report the scalable integration of electroluminescent semiconducting carbon nanotubes between nanographene electrical contacts in photonic crystal cavities, showing high coupling efficiency and dynamic electrical control of the enhanced electroluminescent light emission intensity in the telecom range.
- Anna P. Ovvyan
- , Min-Ken Li
- & Wolfram H. P. Pernice
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Highly cross-linked carbon tube aerogels with enhanced elasticity and fatigue resistance
Carbon aerogels are generally fragile and tend to collapse under large compressive strain. Here, the authors demonstrate that the mechanical strength, elasticity, and fatigue resistance can be improved by fabricating aerogels with interconnected carbon tubes.
- Lei Zhuang
- , De Lu
- & Hongjie Wang
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Fabricating strong and tough aramid fibers by small addition of carbon nanotubes
High-performance fibers are promising materials in the impact protection field but fabricating fibers with high strength and high toughness is challenging. Here, the authors polymerize carbon nanotubes into aramid fibers to simultaneously improve strength and toughness.
- Jiajun Luo
- , Yeye Wen
- & Jin Zhang
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Flattened 1D fragments of fullerene C60 that exhibit robustness toward multi-electron reduction
Fullerenes are compelling molecular materials, but the reason for their high robustness to multi-electron reduction is still debated. Here, the authors synthesize flattened 1D fragments of fullerene C60 with high robustness against multi-electron reduction.
- Masahiro Hayakawa
- , Naoyuki Sunayama
- & Aiko Fukazawa
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Preparing high-concentration individualized carbon nanotubes for industrial separation of multiple single-chirality species
Large-scale production of single-chirality carbon nanotubes has long been a major challenge. Here, authors report a simple, yet effective, method to increase the yield of gel chromatography separation of single-chirality carbon nanotubes by enabling significantly higher concentrations of raw nanotubes solution.
- Dehua Yang
- , Linhai Li
- & Huaping Liu
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Single-atomic platinum on fullerene C60 surfaces for accelerated alkaline hydrogen evolution
The synthesis of high-loading Pt single-atom catalysts is important but challenging. Here, the authors use fullerene C60 with electron-deficient C=C bonds to build Pt/C60 catalysts with abundant Pt single atoms which exhibits high catalytic activity for electrochemical hydrogen evolution reactions
- Ruiling Zhang
- , Yaozhou Li
- & Fang-Fang Li
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Enhanced osmotic transport in individual double-walled carbon nanotube
Carbon nanotubes are promising candidates for transport of ions and charges, but the response of carbon nanotubes under osmotic forcings is not well explored. Here the authors report enhanced ion-specific osmotic transport in individual double-walled carbon nanotubes.
- Guandong Cui
- , Zhi Xu
- & Ming Ma
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Diversity of platinum-sites at platinum/fullerene interface accelerates alkaline hydrogen evolution
One major technological obstacle for membrane-based alkaline water electrolyzer is the inefficient hydrogen evolution reaction. Here, the authors report a platinum/fullerene heterostructure catalyst, which shows enhanced activity for hydrogen production due to the diverse interface between platinum and fullerene.
- Jiayi Chen
- , Mohammed Aliasgar
- & Lei Wang
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Chirality-dependent electrical transport properties of carbon nanotubes obtained by experimental measurement
Single-wall carbon nanotubes have been reported in field effect transistors as a function of nanotube diameter, showing increasing current with increasing diameter. Su et al. show how the chiral structures of single-wall carbon nanotubes affect their electrical transport properties.
- Wei Su
- , Xiao Li
- & Huaping Liu
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Long-lived electronic spin qubits in single-walled carbon nanotubes
Spins defined in single-walled carbon nanotubes promise ultra-long spin relaxation times, but qubit implementations require confinement of isolated spins. Here the authors report highly confined long-lived electron spins in chemically functionalized nanotubes and demonstrate their coherent control.
- Jia-Shiang Chen
- , Kasidet Jing Trerayapiwat
- & Xuedan Ma
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Acid enhanced zipping effect to densify MWCNT packing for multifunctional MWCNT films with ultra-high electrical conductivity
Exploiting the electrical and mechanical properties of CNT films remain elusive because of the difficult material process. Here, Wang et al. report multifunctional MWCNT films with crystalline structure which exhibited great electromagnetic interference shielding efficiency, high thermoelectric power factor, and large ampacity.
- Hong Wang
- , Xu Sun
- & Junjie Yan
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One-dimensional semimetal contacts to two-dimensional semiconductors
2D semiconductors are attracting increasing attention as potentially scalable channels for future transistors, but the scaling of their contact length remains challenging. Here, the authors report the realization of 1D semimetal-2D semiconductor contacts based on individual carbon nanotubes with contact length down to 2 nm.
- Xuanzhang Li
- , Yang Wei
- & Yuegang Zhang
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A charged diatomic triple-bonded U≡N species trapped in C82 fullerene cages
Diatomic actinide molecules are ideal models for studying rare multiple-bond motifs. Here, the authors report host-guest structures of metastable charged U≡N diatoms confined in fullerene cages and stabilized by coordinative electron transfer.
- Qingyu Meng
- , Laura Abella
- & Ning Chen
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Carbon nanotube-based flexible high-speed circuits with sub-nanosecond stage delays
High-speed flexible circuits are essential in flexible systems for real-time information analysis and wireless communication. Here, flexible circuits are reported with a 281 ps stage delay based on scaled carbon nanotube thin film transistors.
- Guanhua Long
- , Wanlin Jin
- & Youfan Hu
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Multimodal collective swimming of magnetically articulated modular nanocomposite robots
The collective actuation of miniaturized robots is highly desirable for executing cooperative tasks. Won et al. show collective locomotion of ternary-nanocomposite-based magnetic robots that are capable of rectilinear translational and rotational swimming controlled by a pulsed electromagnetic field.
- Sukyoung Won
- , Hee Eun Lee
- & Jeong Jae Wie
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Probing the ultrafast dynamics of excitons in single semiconducting carbon nanotubes
Excitonic states govern the optical response of low-dimensional nanomaterials and are key for a wide range of applications. Here, the authors investigate the exciton decay dynamics in single carbon nanotubes with few-exciton detection sensitivity.
- Konrad Birkmeier
- , Tobias Hertel
- & Achim Hartschuh
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Zero energy states clustering in an elemental nanowire coupled to a superconductor
Topological superconductivity (TSC) is predicted to exist in nanowires with strong spin-orbit coupling (SOC) when they are in proximity to superconductors, with a key signature being zero-energy states in conductance measurements. Here, using weak-SOC carbon nanotubes as the nanowires, the authors show that similar looking zero-energy states can appear even in nanowires which cannot, in principle, host TSC.
- Lauriane C. Contamin
- , Lucas Jarjat
- & Matthieu R. Delbecq
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Mode coupling bi-stability and spectral broadening in buckled carbon nanotube mechanical resonators
Computing, memories, and digital electronics are based on the operation principle of bi-stable systems. Here, Yaish et al. report the unusual non-linear behaviour of buckled up carbon nanotubes mechanical resonators, which allows high electrical frequency tunability and snap-through bi-stability.
- Sharon Rechnitz
- , Tal Tabachnik
- & Yuval E. Yaish
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Continuously processing waste lignin into high-value carbon nanotube fibers
Towards high-value utilization of biomass materials, authors demonstrate continuous preparation of high-performance carbon nanotube fibers using lignin as carbon source by solvent dispersion, high-temperature pyrolysis, catalytic synthesis, and assembly.
- Fuyao Liu
- , Qianqian Wang
- & Meifang Zhu
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Photochemical spin-state control of binding configuration for tailoring organic color center emission in carbon nanotubes
Chemical functionalization of the sidewalls of single-wall carbon nanotubes (SWCNTs) is an emerging route to introduce fluorescent quantum defects and tailor the emission properties. Here, authors demonstrate that spin-selective photochemistry diversifies SWCNT emission tunability by controlling the morphology of the emitting sites.
- Yu Zheng
- , Yulun Han
- & Sergei Tretiak
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Bicyclic-ring base doping induces n-type conduction in carbon nanotubes with outstanding thermal stability in air
The preparation of stable n-type carbon nanotubes is desirable for their potential applications in molecular electronics. Here, the authors report that doping with bicyclic-ring organic superbases enables the synthesis of n-type carbon nanotubes with excellent thermal stability in air.
- Shohei Horike
- , Qingshuo Wei
- & Kenji Ishida
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Ultrafast self-heating synthesis of robust heterogeneous nanocarbides for high current density hydrogen evolution reaction
Industry-level water splitting requires highly active and stable hydrogen evolution reaction (HER) catalysts. Herein, an ultrafast self-heating synthesis delivers robust Mo2C/MoC/CNT HER catalysts that can work at 1000 mA cm−2 for 14 days.
- Chenyu Li
- , Zhijie Wang
- & Kai Liu
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Formation of organic color centers in air-suspended carbon nanotubes using vapor-phase reaction
Organic color centers in single-walled carbon nanotubes can act as single-photon sources in the telecom range. Here the authors report the functionalization of air-suspended nanotubes through a vapor-phase photochemical reaction, demonstrating a further tailoring of quantum emitter materials.
- Daichi Kozawa
- , Xiaojian Wu
- & Yuichiro K. Kato
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Local large temperature difference and ultra-wideband photothermoelectric response of the silver nanostructure film/carbon nanotube film heterostructure
Finding efficient photothermoelectric materials remains critical to the development of clean and renewable energy conversion technologies. Here, authors prepare a silver nanostructure film/carbon nanotube film heterojunction with excellent photothermal and photoelectric conversion performance.
- Bocheng Lv
- , Yu Liu
- & Jia-Lin Sun
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A hybrid molecular peapod of sp2- and sp3-nanocarbons enabling ultrafast terahertz rotations
Mechanical motions in hybrid sp2/sp3 -hybrid nanocarbon peapods might lead to promising materials applications, but have been insufficiently explored. Here the authors demonstrate that a diamondoid molecule trapped inside a carbonaceous cylinder undergoes solid-state rotations at terahertz frequencies.
- Taisuke Matsuno
- , Seiya Terasaki
- & Hiroyuki Isobe
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Gate-tunable plasmons in mixed-dimensional van der Waals heterostructures
Surface plasmons have unique physical properties that make them also interesting for technology. Here, the authors observe plasmons in mixed-dimensional heterostructures that can be highly modulated with electrostatic gating, which may be explained by plasmon hybridization
- Sheng Wang
- , SeokJae Yoo
- & Feng Wang
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Macroscopic weavable fibers of carbon nanotubes with giant thermoelectric power factor
Preserving the large power factor of carbon nanotubes is challenging, due to poor sample morphology and a lack of proper Fermi energy tuning. Here, the authors achieve a value of power factor of 14 ± 5 mW m−1 K−2 originating from the preserved conductivity and the ability to tune Fermi energy.
- Natsumi Komatsu
- , Yota Ichinose
- & Junichiro Kono
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Deterministic transfer of optical-quality carbon nanotubes for atomically defined technology
As device fabrication reach atomic scales, assembly of atomically defined components becomes crucial. Here, the authors demonstrate a low contamination transfer technique, using single-crystalline anthracene as medium, for placement of structure-specific carbon nanotubes with submicron accuracy.
- Keigo Otsuka
- , Nan Fang
- & Yuichiro K. Kato
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Cellular lensing and near infrared fluorescent nanosensor arrays to enable chemical efflux cytometry
The authors present nanosensor chemical cytometry, based on an array of nIR fluorescent single walled carbon nanotube integrated along a microfluidic channel. The lensing effect of the flowing cells allows for extracting information, and correlating biomolecular information with physical properties.
- Soo-Yeon Cho
- , Xun Gong
- & Michael S. Strano
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Robot-assisted, source-camera-coupled multi-view broadband imagers for ubiquitous sensing platform
The use of imager devices to supplement broadband photo-monitoring technology has enabled multi-functional sensing capability relevant to internet of things-related applications. Here, the authors report a robotassisted imager-implanted broadband photo-monitoring sensing platform.
- Kou Li
- , Ryoichi Yuasa
- & Yukio Kawano
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Characterization of a strong covalent Th3+–Th3+ bond inside an Ih(7)-C80 fullerene cage
Studying the nature of actinide-actinide bonds is important for understanding the electronic structure of the 5f elements, but the synthesis of these chemical bonds remains extremely challenging. Here, the authors report a strong covalent Th-Th bond formed between two rarely accessible Th3+ ions, stabilized inside a fullerene cage.
- Jiaxin Zhuang
- , Roser Morales-Martínez
- & Ning Chen
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Article
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Synthetic control over the binding configuration of luminescent sp3-defects in single-walled carbon nanotubes
Covalent functionalization of single-walled carbon nanotubes with luminescent sp3-defects generally produces a variety of binding configurations and emission wavelengths. The authors propose a base-mediated nucleophilic functionalization approach to selectively achieve configurations for E11* and E11*- or purely E11*- defect emission.
- Simon Settele
- , Felix J. Berger
- & Jana Zaumseil
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Article
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A flexible ultrasensitive optoelectronic sensor array for neuromorphic vision systems
To emulate nature biological processing, highly-integrated ultra-sensitive artificial neuromorphic system is highly desirable. Here, the authors report flexible sensor array of 1024 pixels using combination of carbon nanotubes and perovskite QDs as active matetials, achieving highly responsive device for reinforcement learning.
- Qian-Bing Zhu
- , Bo Li
- & Dong-Ming Sun
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Stereoselectivity in spontaneous assembly of rolled incommensurate carbon bilayers
Incommensurate pairing is a type of stereoisomerism, observed in carbon bilayers, that arises from the twisted orientations of the graphitic layers. Here, the authors create a finite molecular version of an incommensurate carbon bilayer in the form of two concentrically assembled cylindrical molecules.
- Taisuke Matsuno
- , Yutaro Ohtomo
- & Hiroyuki Isobe
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Article
| Open Access
Readout and control of an endofullerene electronic spin
Encasing a single atom within a fullerene (C60) cage can create a robustly packaged single atomic spin system. Here, the authors perform electron paramagnetic resonance on a single encased spin using a diamond NV-center, demonstrating the first steps in controlling single spins in fullerene cages.
- Dinesh Pinto
- , Domenico Paone
- & Klaus Kern
Collapse of carbon nanotubes due to local high-pressure from van der Waals encapsulation