Journal ArticleDOI
Band gap fluorescence from individual single-walled carbon nanotubes.
Michael J. O'Connell,Sergei M. Bachilo,Chad B. Huffman,Valerie C. Moore,Michael S. Strano,Erik H. Haroz,Kristy L. Rialon,Peter J. Boul,William H. Noon,Carter Kittrell,Jianpeng Ma,Jianpeng Ma,Robert H. Hauge,R. Bruce Weisman,Richard E. Smalley +14 more
TLDR
At pH less than 5, the absorption and emission spectra of individual nanotubes show evidence of band gap–selective protonation of the side walls of the tube, which is readily reversed by treatment with base or ultraviolet light.Abstract:
Fluorescence has been observed directly across the band gap of semiconducting carbon nanotubes. We obtained individual nanotubes, each encased in a cylindrical micelle, by ultrasonically agitating an aqueous dispersion of raw single-walled carbon nanotubes in sodium dodecyl sulfate and then centrifuging to remove tube bundles, ropes, and residual catalyst. Aggregation of nanotubes into bundles otherwise quenches the fluorescence through interactions with metallic tubes and substantially broadens the absorption spectra. At pH less than 5, the absorption and emission spectra of individual nanotubes show evidence of band gap-selective protonation of the side walls of the tube. This protonation is readily reversed by treatment with base or ultraviolet light.read more
Citations
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Journal ArticleDOI
Highly Reversible Mg Insertion in Nanostructured Bi for Mg Ion Batteries
Yuyan Shao,Meng Gu,Xiaolin Li,Zimin Nie,Pengjian Zuo,Guosheng Li,Tianbiao Liu,Jie Xiao,Yingwen Cheng,Chong M. Wang,Ji-Guang Zhang,Jun Liu +11 more
TL;DR: The synthesis and application of Bi nanotubes as a high-performance anode material for rechargeable Mg ion batteries with high reversible specific capacity, excellent stability, and high Coulombic efficiency is reported.
Journal ArticleDOI
Applications of Carbon Nanotubes in Biotechnology and Biomedicine.
Elena Bekyarova,Yingchun Ni,Erik B. Malarkey,Vedrana Montana,Jared L. Mcwilliams,Robert C. Haddon,Vladimir Parpura +6 more
TL;DR: Carbon nanotubes properties are discussed in the context of future applications in biotechnology and biomedicine and their uses in biosensors, assembly of structures and devices, scanning probe microscopy and as substrates for neuronal growth are reviewed.
Patent
Flexible and Stretchable Electronic Systems for Epidermal Electronics
John A. Rogers,Dae-Hyeong Kim +1 more
TL;DR: In this paper, skin-mounted biomedical devices and methods of making and using biomedical devices for sensing and actuation applications are described. But they do not specify any specific applications of these devices.
Journal ArticleDOI
Functional Covalent Chemistry of Carbon Nanotube Surfaces
TL;DR: In this paper, a progress report on the focused functionalization of single-walled carbon nanotubes (SWNTs) surfaces is presented, which explores advances in the formation of nanotube derivatives that essentially maintain and even enhance their performance metrics after precise chemical modification.
Journal ArticleDOI
The rational design of nitric oxide selectivity in single-walled carbon nanotube near-infrared fluorescence sensors for biological detection
Jong-Ho Kim,Daniel A. Heller,Hong Jin,Paul W. Barone,Changsik Song,Jingqing Zhang,Laura J. Trudel,Gerald N. Wogan,Steven R. Tannenbaum,Michael S. Strano +9 more
TL;DR: A 3,4-diaminophenyl-functionalized dextran (DAP-dex) wrapping for single-walled carbon nanotubes (SWNTs) that imparts rapid and selective fluorescence detection of nitric oxide (NO), a messenger for biological signalling, is synthesized.
References
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Journal ArticleDOI
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Bernard R. Brooks,Robert E. Bruccoleri,Barry D. Olafson,David J. States,S. Swaminathan,Martin Karplus +5 more
TL;DR: The CHARMM (Chemistry at Harvard Macromolecular Mechanics) as discussed by the authors is a computer program that uses empirical energy functions to model macromolescular systems, and it can read or model build structures, energy minimize them by first- or second-derivative techniques, perform a normal mode or molecular dynamics simulation, and analyze the structural, equilibrium, and dynamic properties determined in these calculations.
Journal ArticleDOI
MOLSCRIPT: a program to produce both detailed and schematic plots of protein structures
TL;DR: The MOLSCRIPT program as discussed by the authors produces plots of protein structures using several different kinds of representations, including simple wire models, ball-and-stick models, CPK models and text labels.
Journal ArticleDOI
Crystalline Ropes of Metallic Carbon Nanotubes
Andreas Thess,R. S. Lee,Pavel Nikolaev,Hongjie Dai,Pierre Petit,J. Robert,Chunhui Xu,Young Hee Lee,Seong-Gon Kim,Andrew G. Rinzler,Daniel T. Colbert,Gustavo E. Scuseria,David Tománek,John E. Fischer,Richard E. Smalley +14 more
TL;DR: X-ray diffraction and electron microscopy showed that fullerene single-wall nanotubes (SWNTs) are nearly uniform in diameter and that they self-organize into “ropes,” which consist of 100 to 500 SWNTs in a two-dimensional triangular lattice with a lattice constant of 17 angstroms.
Book
Science of fullerenes and carbon nanotubes
TL;DR: In this paper, the authors present a detailed overview of the properties of Fullerenes and their properties in surface science applications, such as scanning tunnel microscopy, growth and fragmentation studies, and chemical synthesis.
Journal ArticleDOI
Constant pressure molecular dynamics simulation: The Langevin piston method
TL;DR: In this paper, a new method for performing molecular dynamics simulations under constant pressure is presented, which is based on the extended system formalism introduced by Andersen, the deterministic equations of motion for the piston degree of freedom are replaced by a Langevin equation; a suitable choice of collision frequency then eliminates the unphysical "ringing" of the volume associated with the piston mass.