1
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Cao L, Li Y, Liu Y, Zhao J, Nan Z, Xiao W, Qiu S, Kang L, Jin H, Li Q. Iterative Strategy for Sorting Single-Chirality Single-Walled Carbon Nanotubes from Aqueous to Organic Systems. ACS NANO 2024; 18:3783-3790. [PMID: 38236194 DOI: 10.1021/acsnano.3c11921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Significant advancements in electronic devices and integrated circuits have been facilitated by semiconducting single-walled carbon nanotubes (SWCNTs) sorted by conjugated polymers (CPs). However, the variety of CPs with single-chirality selectivity is limited, and the sorting results are strongly dependent on the chiral distribution of the starting materials. To address this, we develop an iterative strategy to achieve single-chirality SWCNT separation from aqueous to organic systems, based on a multistep tandem extraction technique that allows a gentle and nondestructive separation of surfactants from SWCNTs, ensuring an efficient system transfer. In parallel, we refined the iterative sorting process between CPs. Employing two starting materials with narrow diameter distributions, using three CPs, we successfully sorted out five single-chirality SWCNTs of the (9,5), (8,6), (10,5), (8,7), and (11,3) species in organic systems. This strategy bridges the gap between aqueous and organic separation systems, achieving efficient complementarity between them.
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Affiliation(s)
- Leitao Cao
- Division of Advanced Nano-Materials, Suzhou Institute of Nanotech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Yahui Li
- Division of Advanced Nano-Materials, Suzhou Institute of Nanotech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Ye Liu
- Division of Advanced Nano-Materials, Suzhou Institute of Nanotech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Jintao Zhao
- Division of Advanced Nano-Materials, Suzhou Institute of Nanotech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Zeyuan Nan
- Division of Advanced Nano-Materials, Suzhou Institute of Nanotech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Wenxin Xiao
- Division of Advanced Nano-Materials, Suzhou Institute of Nanotech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Song Qiu
- Division of Advanced Nano-Materials, Suzhou Institute of Nanotech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Lixing Kang
- Division of Advanced Nano-Materials, Suzhou Institute of Nanotech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Hehua Jin
- Division of Advanced Nano-Materials, Suzhou Institute of Nanotech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Qingwen Li
- Division of Advanced Nano-Materials, Suzhou Institute of Nanotech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
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2
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Barnes B, Wang Z, Alibrahim A, Lin Q, Wu X, Wang Y. Direct Writing of Aligned Carbon Nanotubes across a Trench. ACS NANO 2023; 17:22701-22707. [PMID: 37966901 DOI: 10.1021/acsnano.3c07191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
Aligned and suspended carbon nanotubes can outperform randomly oriented networks in electronic biosensing and thin-film electronics. However, carbon nanotubes tend to bundle and form random networks. Here, we show that carbon nanotubes spontaneously align in an ammonium deoxycholate surfactant gel even under low shear forces, allowing direct writing and printing of nanotubes into electrically conducting wires and aligned thin layers across trenches. To demonstrate its application potential, we directly printed arrays of disposable electrical biosensors, which show femtomolar sensitivity in the detection of DNA and SARS-CoV-2 RNA.
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Affiliation(s)
- Benjamin Barnes
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
- Department of Material Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Ziyi Wang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Ayman Alibrahim
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Qinglin Lin
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Xiaojian Wu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - YuHuang Wang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
- Maryland NanoCenter, University of Maryland, College Park, Maryland 20742, United States
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3
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Luan J, Liu Y, Zhang XS, Meng FB, Wang XZ, Li WZ, Fu Y. Fabrication of a Co-Mo-Based Metal-Organic Framework for Growth of Double-Walled Carbon Nanotubes. Inorg Chem 2023; 62:18116-18127. [PMID: 37883704 DOI: 10.1021/acs.inorgchem.3c02503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
Double-walled carbon nanotubes (DWCNTs) make up a unique class of carbon nanotubes (CNTs) that are particularly intriguing for scientific research and are promising candidates for technological applications. A more precise level of control and greater yields can be achieved via catalytic chemical vapor deposition (CCVD), which involves the breakdown of a carbonaceous gas over nanoparticles. The addition of molybdenum to the system can increase the selectivity with regard to the number of walls that exist in the obtained CNTs. As reported herein, we have designed and synthesized a novel Co-Mo-MOF, [Co(3-bpta)1.5(MoO4)]·H2O (where 3-bpta = N,N'-bis(3-pyridyl)terephthalamide), and employed the Co-Mo-MOF as a bimetallic catalyst precursor for the CCVD approach to prepare high-quality DWCNTs. The Co-Mo-MOF was employed after being calcined in N2 and H2 at 1100 °C and decomposing into CoO, CoMoO4, and MoO3. Existing CoMoO4 is unaltered after reduction in H2 at 1100 °C, while CoO and MoO3 are converted into Co0 and MoO2, and more CoMoO4 is created at the expense of Co0 and MoO2 without clearly defining agglomeration. Finally, the interaction between metallic Co particles and C2H4 is what initiates the formation of DWCNTs. In-depth discussion is provided in this paper regarding the mechanism underlying the high selectivity and activity of Co-Mo catalysts in regulating the development and structure of DWCNTs. The DWCNTs also offer excellence performance when they are used as water purification agents and as selective sorbents. This work opens a feasible way to use MOFs as a way to produce MWCNTs, thus blazing a new trail in the field of MOF-derived carbon-based materials.
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Affiliation(s)
- Jian Luan
- College of Sciences, Northeastern University, Shenyang 110819, P. R. China
| | - Yu Liu
- College of Science, Shenyang University of Chemical Technology, Shenyang 110142, P. R. China
| | - Xiao-Sa Zhang
- College of Science, Shenyang University of Chemical Technology, Shenyang 110142, P. R. China
| | - Fan-Bao Meng
- College of Sciences, Northeastern University, Shenyang 110819, P. R. China
| | - Xuan-Zhi Wang
- College of Science, Shenyang University of Chemical Technology, Shenyang 110142, P. R. China
| | - Wen-Ze Li
- College of Science, Shenyang University of Chemical Technology, Shenyang 110142, P. R. China
| | - Yu Fu
- College of Sciences, Northeastern University, Shenyang 110819, P. R. China
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4
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Yang D, Li L, Li X, Xi W, Zhang Y, Liu Y, Wei X, Zhou W, Wei F, Xie S, Liu H. Preparing high-concentration individualized carbon nanotubes for industrial separation of multiple single-chirality species. Nat Commun 2023; 14:2491. [PMID: 37120644 PMCID: PMC10148823 DOI: 10.1038/s41467-023-38133-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 04/16/2023] [Indexed: 05/01/2023] Open
Abstract
Industrial production of single-chirality carbon nanotubes is critical for their applications in high-speed and low-power nanoelectronic devices, but both their growth and separation have been major challenges. Here, we report a method for industrial separation of single-chirality carbon nanotubes from a variety of raw materials with gel chromatography by increasing the concentration of carbon nanotube solution. The high-concentration individualized carbon nanotube solution is prepared by ultrasonic dispersion followed by centrifugation and ultrasonic redispersion. With this technique, the concentration of the as-prepared individualized carbon nanotubes is increased from about 0.19 mg/mL to approximately 1 mg/mL, and the separation yield of multiple single-chirality species is increased by approximately six times to the milligram scale in one separation run with gel chromatography. When the dispersion technique is applied to an inexpensive hybrid of graphene and carbon nanotubes with a wide diameter range of 0.8-2.0 nm, and the separation yield of single-chirality species is increased by more than an order of magnitude to the sub-milligram scale. Moreover, with present separation technique, the environmental impact and cost of producing single-chirality species are greatly reduced. We anticipate that this method promotes industrial production and practical applications of single-chirality carbon nanotubes in carbon-based integration circuits.
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Affiliation(s)
- Dehua Yang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, and School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
- Advanced Passivation Technology Lab, College of Physics Science and Technology, Hebei University, Baoding, 071002, China
| | - Linhai Li
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, and School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
- Beijing Key Laboratory for Advanced Functional Materials and Structure Research, Beijing, 100190, China
| | - Xiao Li
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, and School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
- Beijing Key Laboratory for Advanced Functional Materials and Structure Research, Beijing, 100190, China
| | - Wei Xi
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, and School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuejuan Zhang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, and School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
- Beijing Key Laboratory for Advanced Functional Materials and Structure Research, Beijing, 100190, China
| | - Yumin Liu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xiaojun Wei
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, and School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
- Beijing Key Laboratory for Advanced Functional Materials and Structure Research, Beijing, 100190, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808, China
| | - Weiya Zhou
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, and School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
- Beijing Key Laboratory for Advanced Functional Materials and Structure Research, Beijing, 100190, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808, China
| | - Fei Wei
- Department of Chemical Engineering, Tsinghua University, Beijing, 10084, China
| | - Sishen Xie
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, and School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
- Beijing Key Laboratory for Advanced Functional Materials and Structure Research, Beijing, 100190, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808, China
| | - Huaping Liu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.
- Center of Materials Science and Optoelectronics Engineering, and School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.
- Beijing Key Laboratory for Advanced Functional Materials and Structure Research, Beijing, 100190, China.
- Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808, China.
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5
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Rust C, Shapturenka P, Spari M, Jin Q, Li H, Bacher A, Guttmann M, Zheng M, Adel T, Walker ARH, Fagan JA, Flavel BS. The Impact of Carbon Nanotube Length and Diameter on their Global Alignment by Dead-End Filtration. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206774. [PMID: 36549899 DOI: 10.1002/smll.202206774] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/06/2022] [Indexed: 06/17/2023]
Abstract
Dead-end filtration has proven to effectively prepare macroscopically (3.8 cm2 ) aligned thin films from solutionbased single-wall carbon nanotubes (SWCNTs). However, to make this technique broadly applicable, the role of SWCNT length and diameter must be understood. To date, most groups report the alignment of unsorted, large diameter (≈1.4 nm) SWCNTs, but systematic studies on their small diameter are rare (≈0.78 nm). In this work, films with an area of A = 3.81 cm2 and a thickness of ≈40 nm are prepared from length-sorted fractions comprising of small and large diameter SWCNTs, respectively. The alignment is characterized by cross-polarized microscopy, scanning electron microscopy, absorption and Raman spectroscopy. For the longest fractions (Lavg = 952 nm ± 431 nm, Δ = 1.58 and Lavg = 667 nm ± 246 nm, Δ = 1.55), the 2D order parameter, S2D, values of ≈0.6 and ≈0.76 are reported for the small and large diameter SWCNTs over an area of A = 625 µm2 , respectively. A comparison of Derjaguin, Landau, Verwey, and Overbeek (DLVO) theory calculations with the aligned domain size is then used to propose a law identifying the required length of a carbon nanotube with a given diameter and zeta potential.
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Affiliation(s)
- Christian Rust
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
- Institute of Materials Science, Technische Universität Darmstadt, Alarich-Weiss-Straße 2, 64287, Darmstadt, Germany
| | - Pavel Shapturenka
- Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA
| | - Manuel Spari
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Qihao Jin
- Light Technology Institute, Karlsruhe Institute of Technology, Engesserstraße 13, 76131, Karlsruhe, Germany
| | - Han Li
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Andreas Bacher
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Markus Guttmann
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Ming Zheng
- Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA
| | - Tehseen Adel
- Quantum Measurement Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA
| | - Angela R Hight Walker
- Quantum Measurement Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA
| | - Jeffrey A Fagan
- Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA
| | - Benjamin S Flavel
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
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6
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Erkens M, Levshov D, Wenseleers W, Li H, Flavel BS, Fagan JA, Popov VN, Avramenko M, Forel S, Flahaut E, Cambré S. Efficient Inner-to-Outer Wall Energy Transfer in Highly Pure Double-Wall Carbon Nanotubes Revealed by Detailed Spectroscopy. ACS NANO 2022; 16:16038-16053. [PMID: 36167339 PMCID: PMC9620404 DOI: 10.1021/acsnano.2c03883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 09/07/2022] [Indexed: 06/16/2023]
Abstract
The coaxial stacking of two single-wall carbon nanotubes (SWCNTs) into a double-wall carbon nanotube (DWCNT), forming a so-called one-dimensional van der Waals structure, leads to synergetic effects that dramatically affect the optical and electronic properties of both layers. In this work, we explore these effects in purified DWCNT samples by combining absorption, wavelength-dependent infrared fluorescence-excitation (PLE), and wavelength-dependent resonant Raman scattering (RRS) spectroscopy. Purified DWCNTs are obtained by careful solubilization that strictly avoids ultrasonication or by electronic-type sorting, both followed by a density gradient ultracentrifugation to remove unwanted SWCNTs that could obscure the DWCNT characterization. Chirality-dependent shifts of the radial breathing mode vibrational frequencies and transition energies of the inner and outer DWCNT walls with respect to their SWCNT analogues are determined by advanced two-dimensional fitting of RRS and PLE data of DWCNT and their reference SWCNT samples. This exhaustive data set verifies that fluorescence from the inner DWCNT walls of well-purified samples is severely quenched through efficient energy transfer from the inner to the outer DWCNT walls. Combined analysis of the PLE and RRS results further reveals that this transfer is dependent on the inner and outer wall chirality, and we identify the specific combinations dominant in our DWCNT samples. These obtained results demonstrate the necessity and value of a combined structural characterization approach including PLE and RRS spectroscopy for bulk DWCNT samples.
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Affiliation(s)
- Maksiem Erkens
- Nanostructured
and Organic Optical and Electronic Materials, Department of Physics, University of Antwerp, B-2610 Antwerp, Belgium
| | - Dmitry Levshov
- Nanostructured
and Organic Optical and Electronic Materials, Department of Physics, University of Antwerp, B-2610 Antwerp, Belgium
| | - Wim Wenseleers
- Nanostructured
and Organic Optical and Electronic Materials, Department of Physics, University of Antwerp, B-2610 Antwerp, Belgium
| | - Han Li
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology, 76344 Eggenstein-Leopoldshafen, Germany
| | - Benjamin S. Flavel
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology, 76344 Eggenstein-Leopoldshafen, Germany
| | - Jeffrey A. Fagan
- Materials
Science and Engineering Division, National
Institute of Standards and Technology, 20899 Gaithersburg, Maryland, United States
| | | | - Marina Avramenko
- Nanostructured
and Organic Optical and Electronic Materials, Department of Physics, University of Antwerp, B-2610 Antwerp, Belgium
| | - Salomé Forel
- Nanostructured
and Organic Optical and Electronic Materials, Department of Physics, University of Antwerp, B-2610 Antwerp, Belgium
- Laboratoire
des Multimatériaux et Interfaces, UMR CNRS 5615, Univ Lyon, Université Claude Bernard Lyon 1, F-69622 Villeurbanne, France
| | - Emmanuel Flahaut
- CIRIMAT,
UMR 5085, CNRS-INP-UPS, Université
Toulouse 3 Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse cedex 9, France
| | - Sofie Cambré
- Nanostructured
and Organic Optical and Electronic Materials, Department of Physics, University of Antwerp, B-2610 Antwerp, Belgium
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7
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Barnes B, Wang P, Wang Y. Parallel Field-Effect Nanosensors Detect Trace Biomarkers Rapidly at Physiological High-Ionic-Strength Conditions. ACS Sens 2022; 7:2537-2544. [PMID: 35700322 PMCID: PMC9509463 DOI: 10.1021/acssensors.2c00229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Sensitivity and speed of detection are contradicting demands that profoundly impact the electrical sensing of molecular biomarkers. Although single-molecule sensitivity can now be achieved with single-nanotube field-effect transistors, these tiny sensors, with a diameter less than 1 nm, may take hours to days to capture the molecular target at trace concentrations. Here, we show that this sensitivity-speed challenge can be addressed using covalently functionalized double-wall CNTs that form many individualized, parallel pathways between two electrodes. Each carrier that travels across the electrodes is forced to take one of these pathways that are fully gated chemically by the target-probe binding events. This sensor design allows us to electrically detect Lyme disease oligonucleotide biomarkers directly at the physiological high-salt concentrations, simultaneously achieving both ultrahigh sensitivity (as low as 1 fM) and detection speed (<15 s). This unexpectedly simple strategy may open opportunities for sensor designs to broadly achieve instant detection of trace biomarkers and real-time probing of biomolecular functions directly at their physiological states.
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8
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Krämer J, Kang R, Grimm LM, De Cola L, Picchetti P, Biedermann F. Molecular Probes, Chemosensors, and Nanosensors for Optical Detection of Biorelevant Molecules and Ions in Aqueous Media and Biofluids. Chem Rev 2022; 122:3459-3636. [PMID: 34995461 PMCID: PMC8832467 DOI: 10.1021/acs.chemrev.1c00746] [Citation(s) in RCA: 100] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Synthetic molecular probes, chemosensors, and nanosensors used in combination with innovative assay protocols hold great potential for the development of robust, low-cost, and fast-responding sensors that are applicable in biofluids (urine, blood, and saliva). Particularly, the development of sensors for metabolites, neurotransmitters, drugs, and inorganic ions is highly desirable due to a lack of suitable biosensors. In addition, the monitoring and analysis of metabolic and signaling networks in cells and organisms by optical probes and chemosensors is becoming increasingly important in molecular biology and medicine. Thus, new perspectives for personalized diagnostics, theranostics, and biochemical/medical research will be unlocked when standing limitations of artificial binders and receptors are overcome. In this review, we survey synthetic sensing systems that have promising (future) application potential for the detection of small molecules, cations, and anions in aqueous media and biofluids. Special attention was given to sensing systems that provide a readily measurable optical signal through dynamic covalent chemistry, supramolecular host-guest interactions, or nanoparticles featuring plasmonic effects. This review shall also enable the reader to evaluate the current performance of molecular probes, chemosensors, and nanosensors in terms of sensitivity and selectivity with respect to practical requirement, and thereby inspiring new ideas for the development of further advanced systems.
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Affiliation(s)
- Joana Krämer
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Rui Kang
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Laura M. Grimm
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Luisa De Cola
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- Dipartimento
DISFARM, University of Milano, via Camillo Golgi 19, 20133 Milano, Italy
- Department
of Molecular Biochemistry and Pharmacology, Instituto di Ricerche Farmacologiche Mario Negri, IRCCS, 20156 Milano, Italy
| | - Pierre Picchetti
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- P.P.: email,
| | - Frank Biedermann
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- F.B.: email,
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9
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Zhu A, Yang X, Zhang L, Wang K, Liu T, Zhao X, Zhang L, Wang L, Yang F. Selective separation of single-walled carbon nanotubes in aqueous solution by assembling redox nanoclusters. NANOSCALE 2022; 14:953-961. [PMID: 34989359 DOI: 10.1039/d1nr04019g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The selective separation of soluble and individual single-walled carbon nanotubes (SWCNTs) in aqueous solution is a key step for harnessing the extraordinary properties of these materials. Manipulating the strong van der Waals intertube interactions between the SWCNT bundles is very important in selective separation, which is a long-standing challenge. Here we reported the ability of redox polyoxometalate clusters to modulate the intertube π-π stacking interaction through electron transfer and achieved the diameter-selective separation of SWCNTs in a surfactant aqueous solution. The large-diameter SWCNTs concentrated at ∼1.3-1.4 nm were selectively separated when ∼1 nm clusters encapsulated within the tube cavity, and the dispersion of subnanometer ∼0.7-0.9 nm SWCNTs was boosted when clusters were adsorbed on the outer surface of small-diameter nanotubes. The mechanism of diameter-selective separation of SWCNTs associated with the size-dependent interaction between cluster-tubes and the steric hindrance effect of clusters was revealed by optical absorption and Raman spectroscopy. This simple method thus enables the selective separation of individual high-quality SWCNTs in aqueous solutions without harsh sonication with the potential for other separation applications.
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Affiliation(s)
- Anquan Zhu
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Xusheng Yang
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Lei Zhang
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Kun Wang
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Tianhui Liu
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Xin Zhao
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Luyao Zhang
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Lei Wang
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Feng Yang
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
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10
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Cambré S, Liu M, Levshov D, Otsuka K, Maruyama S, Xiang R. Nanotube-Based 1D Heterostructures Coupled by van der Waals Forces. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2102585. [PMID: 34355517 DOI: 10.1002/smll.202102585] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 07/19/2021] [Indexed: 06/13/2023]
Abstract
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 custom-built 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.
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Affiliation(s)
- Sofie Cambré
- Nanostructured and Organic Optical and Electronic Materials, Department of Physics, University of Antwerp, Antwerp 2610, Belgium
| | - Ming Liu
- Department of Mechanical Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Dmitry Levshov
- Nanostructured and Organic Optical and Electronic Materials, Department of Physics, University of Antwerp, Antwerp 2610, Belgium
| | - Keigo Otsuka
- Department of Mechanical Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Shigeo Maruyama
- Department of Mechanical Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Rong Xiang
- Department of Mechanical Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
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11
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Gordeev G, Wasserroth S, Li H, Flavel B, Reich S. Moiré-Induced Vibrational Coupling in Double-Walled Carbon Nanotubes. NANO LETTERS 2021; 21:6732-6739. [PMID: 34369792 DOI: 10.1021/acs.nanolett.1c00295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Moiré patterns are additional, long-range periodicities in twisted crystalline bilayers. They are known to fundamentally change the electronic states of the layers, but similar effects on their mechanical and vibrational properties have not been discussed so far. Here we show that the moiré potential shifts the radial breathing mode in double-walled carbon nanotubes (DWCNTs). The change in frequency is expected to be proportional to the shift in optical transition energies, which are induced by the moiré patterns. To verify our model, we performed resonance Raman scattering on purified and sorted semiconducting DWCNTs. We find that the radial breathing mode shifts up to 14 cm-1 higher in energy followed by displacement of optical transition energies of up to 200 meV to lower energies, in comparison to the single-walled tubes. We show how to identify the strong coupling condition in DWCNTs from their phonon frequencies and construct a Kataura plot to aid their future experimental assignment.
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Affiliation(s)
- Georgy Gordeev
- Department of Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Sören Wasserroth
- Department of Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Han Li
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Benjamin Flavel
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Stephanie Reich
- Department of Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
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12
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Yang F, Wang M, Zhang D, Yang J, Zheng M, Li Y. Chirality Pure Carbon Nanotubes: Growth, Sorting, and Characterization. Chem Rev 2020; 120:2693-2758. [PMID: 32039585 DOI: 10.1021/acs.chemrev.9b00835] [Citation(s) in RCA: 135] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Single-walled carbon nanotubes (SWCNTs) have been attracting tremendous attention owing to their structure (chirality) dependent outstanding properties, which endow them with great potential in a wide range of applications. The preparation of chirality-pure SWCNTs is not only a great scientific challenge but also a crucial requirement for many high-end applications. As such, research activities in this area over the last two decades have been very extensive. In this review, we summarize recent achievements and accumulated knowledge thus far and discuss future developments and remaining challenges from three aspects: controlled growth, postsynthesis sorting, and characterization techniques. In the growth part, we focus on the mechanism of chirality-controlled growth and catalyst design. In the sorting part, we organize and analyze existing literature based on sorting targets rather than methods. Since chirality assignment and quantification is essential in the study of selective preparation, we also include in the last part a comprehensive description and discussion of characterization techniques for SWCNTs. It is our view that even though progress made in this area is impressive, more efforts are still needed to develop both methodologies for preparing ultrapure (e.g., >99.99%) SWCNTs in large quantity and nondestructive fast characterization techniques with high spatial resolution for various nanotube samples.
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Affiliation(s)
- Feng Yang
- Beijing National Laboratory for Molecular Science, Key Laboratory for the Physics and Chemistry of Nanodevices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Meng Wang
- Beijing National Laboratory for Molecular Science, Key Laboratory for the Physics and Chemistry of Nanodevices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Daqi Zhang
- Beijing National Laboratory for Molecular Science, Key Laboratory for the Physics and Chemistry of Nanodevices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Juan Yang
- Beijing National Laboratory for Molecular Science, Key Laboratory for the Physics and Chemistry of Nanodevices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Ming Zheng
- Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Yan Li
- Beijing National Laboratory for Molecular Science, Key Laboratory for the Physics and Chemistry of Nanodevices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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13
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Liu Y, Nitschke M, Stepien L, Khavrus V, Bezugly V, Cuniberti G. Ammonia Plasma-Induced n-Type Doping of Semiconducting Carbon Nanotube Films: Thermoelectric Properties and Ambient Effects. ACS APPLIED MATERIALS & INTERFACES 2019; 11:21807-21814. [PMID: 31099237 DOI: 10.1021/acsami.9b02918] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We explore an n-type doping strategy of semiconducting single-walled carbon nanotubes (sc-SWCNTs) by a covalent functionalization in ammonia plasma and elucidate the effect of air exposure on thermoelectric properties of the sc-SWCNTs before and after doping. Without doping, the sc-SWCNT films have a Seebeck coefficient of 125 μV/K and a power factor (PF) of 95 μW/m K2 in ambient conditions. Heating of such films in air up to 100 °C and above is not changing their thermoelectric properties noticeably; however, the films can be converted to an n-type material simply by gas desorption at low pressure and room temperature, showing an outstanding negative Seebeck coefficient of -133 μV/K and a PF of 55 μW/m K2. Doping of the sc-SWCNT films with ammonia plasma leads to the reduction of the Seebeck coefficient down to 40 μV/K in ambient conditions, which is the result of two competing effects: attachment of electron-donating functional groups during plasma treatment and adsorption of water molecules when exposing films to air. At temperatures slightly higher than the boiling point of water, the doped films of sc-SWCNTs show the lowest Seebeck coefficient of -80 μV/K in air. A similar value of the Seebeck coefficient is obtained for the same films at low pressures and room temperature. To our knowledge, this is one of the best values ever reported for n-type pure carbon nanotube films.
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Affiliation(s)
- Ye Liu
- Institute for Materials Science and Max Bergmann Center of Biomaterials , TU Dresden , 01069 Dresden , Germany
| | - Mirko Nitschke
- Leibniz Institute of Polymer Research Dresden , Hohe Str. 6 , 01069 Dresden , Germany
| | - Lukas Stepien
- Fraunhofer Institut für Werkstoff- und Strahltechnik IWS , 01277 Dresden , Germany
| | - Vyacheslav Khavrus
- Institute for Materials Science and Max Bergmann Center of Biomaterials , TU Dresden , 01069 Dresden , Germany
- IFW Dresden , P.O. Box 270116, D-01171 Dresden , Germany
- Life Science Inkubator Sachsen GmbH & Co. KG , Tatzberg 47 , 01307 Dresden , Germany
| | - Viktor Bezugly
- Institute for Materials Science and Max Bergmann Center of Biomaterials , TU Dresden , 01069 Dresden , Germany
- Life Science Inkubator Sachsen GmbH & Co. KG , Tatzberg 47 , 01307 Dresden , Germany
| | - Gianaurelio Cuniberti
- Institute for Materials Science and Max Bergmann Center of Biomaterials , TU Dresden , 01069 Dresden , Germany
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14
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Li H, Gordeev G, Garrity O, Reich S, Flavel BS. Separation of Small-Diameter Single-Walled Carbon Nanotubes in One to Three Steps with Aqueous Two-Phase Extraction. ACS NANO 2019; 13:2567-2578. [PMID: 30673278 DOI: 10.1021/acsnano.8b09579] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
An aqueous two-phase extraction (ATPE) technique capable of separating small-diameter single-walled carbon nanotubes in one, two, or at the most three steps is presented. Separation is performed in the well-studied two-phase system containing polyethylene glycol and dextran, but it is achieved without changing the global concentration or ratio of cosurfactants. Instead, the technique is reliant upon the different surfactant shell around each nanotube diameter at a fixed surfactant concentration. The methodology to obtain a single set of surfactant conditions is provided, and strategies to optimize these for other diameter regimes are discussed. In total, 11 different chiralities in the diameter range 0.69-0.91 nm are separated. These include semiconducting and both armchair and nonarmchair metallic nanotube species. Titration of cosurfactant suspensions reveal separation to be driven by the pH of the suspension with each ( n, m) species partitioning at a fixed pH. This allows for an ( n, m) separation approach to be presented that is as simple as pipetting known volumes of acid into the ATPE system.
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Affiliation(s)
- Han Li
- Institute of Nanotechnology , Karlsruhe Institute of Technology , Karlsruhe 76344 , Germany
| | - Georgy Gordeev
- Department of Physics , Freie Universität Berlin , Berlin 14195 , Germany
| | - Oisin Garrity
- Department of Physics , Freie Universität Berlin , Berlin 14195 , Germany
| | - Stephanie Reich
- Department of Physics , Freie Universität Berlin , Berlin 14195 , Germany
| | - Benjamin S Flavel
- Institute of Nanotechnology , Karlsruhe Institute of Technology , Karlsruhe 76344 , Germany
- Institute of Materials Science , Technische Universität Darmstadt , Darmstadt 64289 , Germany
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15
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Shi L, Wei J, Yanagi K, Saito T, Cao K, Kaiser U, Ayala P, Pichler T. Templated direct growth of ultra-thin double-walled carbon nanotubes. NANOSCALE 2018; 10:21254-21261. [PMID: 30418461 DOI: 10.1039/c8nr06925e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Double-walled carbon nanotubes (DWCNTs) combined the advantages of multi-walled (MW-) and single-walled (SW-) CNTs can be obtained by transforming the precursors (e.g. fullerene, ferrocene) into thin inner CNTs inside SWCNTs as templates. However, this method is limited since the DWCNT yield is strongly influenced by the filling efficiency (depending on the type of the filled molecules), opening and cutting the SWCNTs, and the diameter of the host SWCNTs. Therefore, it cannot be applied to all types of SWCNT templates. Here we show a universal route to synthesize ultra-thin DWCNTs via making SWCNTs stable at high temperature in vacuum. This method applies to different types of SWCNTs including metallicity-sorted ones without using any precursors since the carbon sources were from the reconstructed SWCNTs and the residue carbons. The resulting DWCNTs are with high quality and the yield of inner tubes is comparable to/higher than that of the DWCNTs made from the transformation of ferrocene/fullerene peapods.
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Affiliation(s)
- Lei Shi
- University of Vienna, Faculty of Physics, 1090 Wien, Austria.
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16
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Wang P, Peng Z, Li M, Wang Y. Stretchable Transparent Conductive Films from Long Carbon Nanotube Metals. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1802625. [PMID: 30091525 PMCID: PMC6482951 DOI: 10.1002/smll.201802625] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Indexed: 05/09/2023]
Abstract
Flexible transparent conductors are an enabling component for large-area flexible displays, wearable electronics, and implantable medical sensors that can wrap around and move with the body. However, conventional conductive materials decay quickly under tensile strain, posing a significant hurdle for functional flexible devices. Here, we show that high electrical conductivity, mechanical stretchability, and optical transparency can be simultaneously attained by compositing long metallic double-walled carbon nanotubes with a polydimethylsiloxane substrate. When stretched to 100% tensile strain, thin films incorporating these long nanotubes (≈3.2 µm on average) achieve a record high conductivity of 3316 S cm-1 at 100% tensile strain and 85% optical transmittance, which is 194 times higher than that of short nanotube controls (≈0.8 µm on average). Moreover, the high conductivity can withstand more than 1000 repeated stretch-release cycles (switching between 100% and 0% strain) with a retention approaching 96%, whereas the short nanotube controls exhibit only 10%. Mechanistic studies reveal that long tubes can bridge the microscale gaps generated during stretching, thereby maintaining high electrical conductivity. When mounted on human joints, this elastic transparent conductor can accommodate large motions to provide stable, high current output. These results point to transparent conductors capable of attaining high electrical conductivity and optical transmittance under mechanical strain to allow large shape changes that may take place in the operation and use of flexible electronics.
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Affiliation(s)
- Peng Wang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA,
| | - Zhiwei Peng
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA,
| | - Muxiao Li
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA,
| | - YuHuang Wang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA,
- Maryland NanoCenter, University of Maryland, College Park, MD 20742, USA
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17
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Garlapati SK, Divya M, Breitung B, Kruk R, Hahn H, Dasgupta S. Printed Electronics Based on Inorganic Semiconductors: From Processes and Materials to Devices. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1707600. [PMID: 29952112 DOI: 10.1002/adma.201707600] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 03/20/2018] [Indexed: 06/08/2023]
Abstract
Following the ever-expanding technological demands, printed electronics has shown palpable potential to create new and commercially viable technologies that will benefit from its unique characteristics, such as, large-area and wide range of substrate compatibility, conformability and low-cost. Through the last few decades, printed/solution-processed field-effect transistors (FETs) and circuits have witnessed immense research efforts, technological growth and increased commercial interests. Although printing of functional inks comprising organic semiconductors has already been initiated in early 1990s, gradually the attention, at least partially, has been shifted to various forms of inorganic semiconductors, starting from metal chalcogenides, oxides, carbon nanotubes and very recently to graphene and other 2D semiconductors. In this review, the entire domain of printable inorganic semiconductors is considered. In fact, thanks to the continuous development of materials/functional inks and novel design/printing strategies, the inorganic printed semiconductor-based circuits today have reached an operation frequency up to several hundreds of kilohertz with only a few nanosecond time delays at the individual FET/inverter levels; in this regard, often circuits based on hybrid material systems have been found to be advantageous. At the end, a comparison of relative successes of various printable inorganic semiconductor materials, the remaining challenges and the available future opportunities are summarized.
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Affiliation(s)
- Suresh Kumar Garlapati
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), D-76344, Eggenstein-Leopoldshafen, Germany
| | - Mitta Divya
- Department of Materials Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Ben Breitung
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), D-76344, Eggenstein-Leopoldshafen, Germany
| | - Robert Kruk
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), D-76344, Eggenstein-Leopoldshafen, Germany
| | - Horst Hahn
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), D-76344, Eggenstein-Leopoldshafen, Germany
- KIT-TUD Joint Research Laboratory Nanomaterials, Technische Universität Darmstadt (TUD), Institute of Materials Science, Jovanka-Bontschits-Str. 2, ,64287, Darmstadt, Germany
| | - Subho Dasgupta
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), D-76344, Eggenstein-Leopoldshafen, Germany
- Department of Materials Engineering, Indian Institute of Science, Bangalore, 560012, India
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