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  • 1
    Publication Date: 2002-12-03
    Description: Spectrofluorimetric measurements on single-walled carbon nanotubes (SWNTs) isolated in aqueous surfactant suspensions have revealed distinct electronic absorption and emission transitions for more than 30 different semiconducting nanotube species. By combining these fluorimetric results with resonance Raman data, each optical transition has been mapped to a specific (n,m) nanotube structure. Optical spectroscopy can thereby be used to rapidly determine the detailed composition of bulk SWNT samples, providing distributions in both tube diameter and chiral angle. The measured transition frequencies differ substantially from simple theoretical predictions. These deviations may reflect combinations of trigonal warping and excitonic effects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bachilo, Sergei M -- Strano, Michael S -- Kittrell, Carter -- Hauge, Robert H -- Smalley, Richard E -- Weisman, R Bruce -- New York, N.Y. -- Science. 2002 Dec 20;298(5602):2361-6. Epub 2002 Nov 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Center for Nanoscale Science and Technology, and Center for Biological and Environmental Nanotechnology, Rice University, 6100 Main Street, Houston, TX 77005, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12459549" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2012-11-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Strano, Michael S -- New York, N.Y. -- Science. 2012 Nov 16;338(6109):890-1. doi: 10.1126/science.1231024.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. strano@mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23161982" target="_blank"〉PubMed〈/a〉
    Keywords: Cholesterol/*chemistry ; DNA/*chemistry ; Ion Channels/*chemistry ; *Lipid Bilayers ; *Nanostructures
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2002-07-27
    Description: 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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Connell, Michael J -- Bachilo, Sergei M -- Huffman, Chad B -- Moore, Valerie C -- Strano, Michael S -- Haroz, Erik H -- Rialon, Kristy L -- Boul, Peter J -- Noon, William H -- Kittrell, Carter -- Ma, Jianpeng -- Hauge, Robert H -- Weisman, R Bruce -- Smalley, Richard E -- New York, N.Y. -- Science. 2002 Jul 26;297(5581):593-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Rice Quantum Institute, Rice University, 6100 Main Street, Houston, TX 77005, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12142535" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2003-09-13
    Description: Diazonium reagents functionalize single-walled carbon nanotubes suspended in aqueous solution with high selectivity and enable manipulation according to electronic structure. For example, metallic species are shown to react to the near exclusion of semiconducting nanotubes under controlled conditions. Selectivity is dictated by the availability of electrons near the Fermi level to stabilize a charge-transfer transition state preceding bond formation. The chemistry can be reversed by using a thermal treatment that restores the pristine electronic structure of the nanotube.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Strano, Michael S -- Dyke, Christopher A -- Usrey, Monica L -- Barone, Paul W -- Allen, Mathew J -- Shan, Hongwei -- Kittrell, Carter -- Hauge, Robert H -- Tour, James M -- Smalley, Richard E -- New York, N.Y. -- Science. 2003 Sep 12;301(5639):1519-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemical and Biomolecular Engineering, University of Illinois-Urbana/Champaign, Urbana, IL 61801, USA. strano@uiuc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12970561" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2004-05-25
    Description: We report interband magneto-optical spectra for single-walled carbon nanotubes in high magnetic fields up to 45 tesla, confirming theoretical predictions that the band structure of a single-walled carbon nanotube is dependent on the magnetic flux phi threading the tube. We have observed field-induced optical anisotropy as well as red shifts and splittings of absorption and photoluminescence peaks. The amounts of shifts and splittings depend on the value of phi/phi(0) and are quantitatively consistent with theories based on the Aharonov-Bohm effect. These results represent evidence of the influence of the Aharonov-Bohm phase on the band gap of a solid.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zaric, Sasa -- Ostojic, Gordana N -- Kono, Junichiro -- Shaver, Jonah -- Moore, Valerie C -- Strano, Michael S -- Hauge, Robert H -- Smalley, Richard E -- Wei, Xing -- New York, N.Y. -- Science. 2004 May 21;304(5674):1129-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physics and Astronomy, Rice University, Houston, TX 77005 USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15155942" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 2003-12-04
    Description: Wrapping of carbon nanotubes (CNTs) by single-stranded DNA (ssDNA) was found to be sequence-dependent. A systematic search of the ssDNA library selected a sequence d(GT)n, n = 10 to 45 that self-assembles into a helical structure around individual nanotubes in such a way that the electrostatics of the DNA-CNT hybrid depends on tube diameter and electronic properties, enabling nanotube separation by anion exchange chromatography. Optical absorption and Raman spectroscopy show that early fractions are enriched in the smaller diameter and metallic tubes, whereas late fractions are enriched in the larger diameter and semiconducting tubes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zheng, Ming -- Jagota, Anand -- Strano, Michael S -- Santos, Adelina P -- Barone, Paul -- Chou, S Grace -- Diner, Bruce A -- Dresselhaus, Mildred S -- McLean, Robert S -- Onoa, G Bibiana -- Samsonidze, Georgii G -- Semke, Ellen D -- Usrey, Monica -- Walls, Dennis J -- New York, N.Y. -- Science. 2003 Nov 28;302(5650):1545-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉DuPont Central Research and Development, Experimental Station, Wilmington, DE 19880, USA. ming.zheng@usa.dupont.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14645843" target="_blank"〉PubMed〈/a〉
    Keywords: Anions ; Base Sequence ; Chromatography, Ion Exchange ; DNA, Single-Stranded/*chemistry ; Deoxyribonucleotides/chemistry ; Gene Library ; Hydrogen Bonding ; Microscopy, Atomic Force ; *Nanotechnology ; *Nanotubes, Carbon ; Nucleic Acid Conformation ; Repetitive Sequences, Nucleic Acid ; Semiconductors ; Spectrum Analysis ; Spectrum Analysis, Raman ; Static Electricity
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 2006-01-28
    Description: The transition of DNA secondary structure from an analogous B to Z conformation modulates the dielectric environment of the single-walled carbon nanotube (SWNT) around which it is adsorbed. The SWNT band-gap fluorescence undergoes a red shift when an encapsulating 30-nucleotide oligomer is exposed to counter ions that screen the charged backbone. The transition is thermodynamically identical for DNA on and off the nanotube, except that the propagation length of the former is shorter by five-sixths. The magnitude of the energy shift is described by using an effective medium model and the DNA geometry on the nanotube sidewall. We demonstrate the detection of the B-Z change in whole blood, tissue, and from within living mammalian cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Heller, Daniel A -- Jeng, Esther S -- Yeung, Tsun-Kwan -- Martinez, Brittany M -- Moll, Anthonie E -- Gastala, Joseph B -- Strano, Michael S -- New York, N.Y. -- Science. 2006 Jan 27;311(5760):508-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16439657" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Absorption ; Adsorption ; Animals ; Cations, Divalent/chemistry ; Chickens ; Circular Dichroism ; DNA/blood/*chemistry ; DNA, Z-Form/blood/*chemistry ; Fluorescence ; Mathematics ; Mercury/analysis ; Mice ; Models, Molecular ; Muscle, Skeletal/chemistry ; *Nanotubes, Carbon ; *Nucleic Acid Conformation ; Oligodeoxyribonucleotides/chemistry ; Spectrometry, Fluorescence ; Thermodynamics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 2009-04-04
    Description: Development of materials that deliver more energy at high rates is important for high-power applications, including portable electronic devices and hybrid electric vehicles. For lithium-ion (Li+) batteries, reducing material dimensions can boost Li+ ion and electron transfer in nanostructured electrodes. By manipulating two genes, we equipped viruses with peptide groups having affinity for single-walled carbon nanotubes (SWNTs) on one end and peptides capable of nucleating amorphous iron phosphate(a-FePO4) fused to the viral major coat protein. The virus clone with the greatest affinity toward SWNTs enabled power performance of a-FePO4 comparable to that of crystalline lithium iron phosphate (c-LiFePO4) and showed excellent capacity retention upon cycling at 1C. This environmentally benign low-temperature biological scaffold could facilitate fabrication of electrodes from materials previously excluded because of extremely low electronic conductivity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Yun Jung -- Yi, Hyunjung -- Kim, Woo-Jae -- Kang, Kisuk -- Yun, Dong Soo -- Strano, Michael S -- Ceder, Gerbrand -- Belcher, Angela M -- New York, N.Y. -- Science. 2009 May 22;324(5930):1051-5. doi: 10.1126/science.1171541. Epub 2009 Apr 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19342549" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteriophage M13/chemistry/*genetics ; *Bioelectric Energy Sources ; Capsid Proteins/chemistry/*genetics ; Electric Conductivity ; Electrochemistry ; *Electrodes ; Ferrous Compounds/chemistry ; Genes, Viral ; Genetic Engineering ; Lithium/*chemistry ; Metal Nanoparticles ; *Nanotubes, Carbon ; *Nanowires ; Phosphates/chemistry ; Silver
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
    Publication Date: 2010-09-11
    Description: Biological ion channels are able to generate coherent and oscillatory signals from intrinsically noisy and stochastic components for ultrasensitive discrimination with the use of stochastic resonance, a concept not yet demonstrated in human-made analogs. We show that a single-walled carbon nanotube demonstrates oscillations in electroosmotic current through its interior at specific ranges of electric field that are the signatures of coherence resonance. Stochastic pore blocking is observed when individual cations partition into the nanotube obstructing an otherwise stable proton current. The observed oscillations occur because of coupling between pore blocking and a proton-diffusion limitation at the pore mouth. The result illustrates how simple ionic transport can generate coherent waveforms within an inherently noisy environment and points to new types of nanoreactors, sensors, and nanofluidic channels based on this platform.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Chang Young -- Choi, Wonjoon -- Han, Jae-Hee -- Strano, Michael S -- New York, N.Y. -- Science. 2010 Sep 10;329(5997):1320-4. doi: 10.1126/science.1193383.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20829480" target="_blank"〉PubMed〈/a〉
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
    Publication Date: 2014-01-07
    Description: Author(s): L. G. Moura, M. V. O. Moutinho, P. Venezuela, C. Fantini, A. Righi, M. S. Strano, and M. A. Pimenta We present in this work measurements of the Raman excitation profile of the high-energy phonons (G band) in single-chirality (n,m) semiconducting single-wall carbon nanotubes using more than 70 laser excitation energies, and a theoretical description based on the third-order quantum model for Raman ... [Phys. Rev. B 89, 035402] Published Mon Jan 06, 2014
    Keywords: Surface physics, nanoscale physics, low-dimensional systems
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
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