豆腐文摘：AdvMater08 (一)

Volume 20 Issue 1 , Pages 3 - 210 (January, 2008)

#1. The Inner Shell Influence on the Electronic Structure of Double-Walled Carbon Nanotubes (p 189-194)
Y. Tison, C. E. Giusca, V. Stolojan, Y. Hayashi, S. R. P. Silva
Published Online: Dec 11 2007 9:01AM
DOI: 10.1002/adma.200700399

	We present STM and STS results obtained for double-walled carbon nanotubes. In the case displayed here, the STS results exhibit the Van Hove singularities corresponding to semi conducting tubes for both the outer and the inner shell and a finite density of states at the Fermi level (EF) is observed for a DWNT. We associate this behavior to the presence of an intershell interaction.

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Volume 20 Issue 2 , Pages 215 - 370 (January, 2008)

#2. Dynamic Imaging of Functionalized Multi-Walled Carbon Nanotube Systemic Circulation and Urinary Excretion (p 225-230)

L. Lacerda, A. Soundararajan, R. Singh, G. Pastorin, K. T. Al-Jamal, J. Turton, P. Frederik, M. A. Herrero, S. Li, A. Bao, D. Emfietzoglou, S. Mather, W. T. Phillips, M. Prato, A. Bianco, B. Goins, K. Kostarelos
Published Online: Dec 11 2007 3:09AM
DOI: 10.1002/adma.200702334

	Intravenously administered multi-walled carbon nanotubes, functionalized with DTPA and radiolabeled with Indium-111, were dynamically tracked in vivo using a microSingle Photon Emission Tomography scanner. Imaging showed that nanotubes enter the systemic blood circulation and within 5 min begin to permeate through the renal glomerular filtration system into the bladder.

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#3. Conductive Carbon Nanotube Composite Microprobes (p 357-362)
O. Yaglioglu, R. Martens, A. J. Hart, A. H. Slocum
Published Online: Jan 3 2008 5:12AM
DOI: 10.1002/adma.200700075

	A simple, flexible, and robust way of fabricating fully functional electromechanical carbon nanotube (CNT) microprobes, by transferring as-grown CNT columns onto a conductive substrate using a conductive epoxy (see figure), is shown. The CNT microprobes are approximately 500 times stronger than as-grown pillars and can perform up to 200 cycles without degradation in electrical or mechanical properties.

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#4. Sparse Multiwall Carbon Nanotube Electrode Arrays for Liquid-Crystal Photonic Devices (p 363-366)
T. D. Wilkinson, X. Wang, K. B. K. Teo, W. I. Milne
Published Online: Jan 3 2008 5:12AM
DOI: 10.1002/adma.200701910

	A new class of devices based on a hybrid combination of two different materials, nanotubes and liquid crystals, is presented. An array of individual vertically aligned multiwall carbon nanotubes creates a Gaussian electric field profile which reorients a nematic liquid crystal. The variation in refractive index acts like a graded index optical element which can be varied electrically. Results are presented from a device fabricated with 10 m pitch micro-optical elements.

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Volume 20 Issue 3 , Pages 375 - 634 (February, 2008)

#5. Carbon Nanotube Network Structuring Using Two-Dimensional Colloidal Crystal Templates (p 457-461)
M. H. Kim, J.-Y. Choi, H. K. Choi, S.-M. Yoon, O. O. Park, D. K. Yi, S. J. Choi, H.-J. Shin
Published Online: Jan 17 2008 2:16AM
DOI: 10.1002/adma.200700956

	Two-dimensional colloidal lithography is successfully applied to the fabrication of novel transparent carbon nanotube networks with controllable film resistance. The method adopted in this study produces ordered network structure with regular voids in the carbon nanotube network film, and results in transparency increases compared with random network structured films, without loss of conductivity.

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#6. DNA-Wrapped Single-Walled Carbon Nanotube Hybrid Fibers for supercapacitors and Artificial Muscles (p 466-470)
S. R. Shin, C. K. Lee, I. S. So, J. H. Jeon, T. M. Kang, C. W. Kee, S. I. Kim, G. M. Spinks, G. G. Wallace, S. J. Kim
Published Online: Jan 17 2008 2:16AM
DOI: 10.1002/adma.200701102

	DNA-single-walled carbon nanotube (SWNT) hybrid fibers are fabricated. Partial debundling and alignment of the nanotubes reduces junction resistances leading to high conductivities. The DNA is effective, as a mechanical binder and for debundling the SWNTs, even when immersed in liquid electrolytes. Therefore, the DNA-SWNT Fibers show excellent supercapacitor behavior and superior actuation performance.

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#7. Enhanced Optical Limiting Effects in Porphyrin-Covalently Functionalized Single-Walled Carbon Nanotubes (p 511-515)
Z.-B. Liu, J.-G. Tian, Z. Guo, D.-M. Ren, F. Du, J.-Y. Zheng, Y.-S. Chen
Published Online: Jan 17 2008 2:16AM
DOI: 10.1002/adma.200702547

	Single-walled carbon nanotubes covalently functionalized with porphyrins present enhanced optical limiting effects. Both porphyrins and SWNTs are good candidates for optical limiting applications. The porphyrin-covalently functionalized SWNTs offer superior performance to C60, the individual SWNTs, and porphyrins because of a combined nonlinear mechanism and photoinduced electron or energy transfer between the porphyrin moiety and the SWNTs.

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#8. Direct Growth of Flexible Carbon Nanotube Electrodes (p 566-570)
J. Chen, A. I. Minett, Y. Liu, C. Lynam, P. Sherrell, C. Wang, G. G. Wallace
Published Online: Jan 9 2008 5:43AM
DOI: 10.1002/adma.200701146

	Multiwalled CNT entangled networks integrated into a highly conducting carbon layer can be grown on a range of substrates including glassy carbon and metal foils. A continuous flexible CNT electrode with high surface area and conductivity is produced, with a stable battery capacity of 572 mAh g-1. This discovery provides a direct route for the generation of large-scale flexible CNT electrode materials.

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#9. Sonochemical Optimization of the Conductivity of Single Wall Carbon Nanotube Networks (p 616-620)
M. Kaempgen, M. Lebert, M. Haluska, N. Nicoloso, S. Roth
Published Online: Jan 17 2008 2:16AM
DOI: 10.1002/adma.200702873

	Networks of single-wall carbon nanotubes (SWCNTs) are covalently functionalized with oxygen-containing groups. In lower concentration, these functional groups act as stable dopands improving the conductivity of the SWCNT material. In higher concentration however, their role as defects with a certain scattering potential becomes dominant, decreasing the conductivity of the CNT material. These effects lead to a trade-off in the number of functional groups which has been investigated using time-dependent sonochemistry.

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#10. Fault-Tolerant Dielectric Elastomer Actuators using Single-Walled Carbon Nanotube Electrodes (p 621-625)
W. Yuan, L. B. Hu, Z. B. Yu, T. Lam, J. Biggs, S. M. Ha, D. J. Xi, B. Chen, M. K. Senesky, G. Grüner, Q. Pei
Published Online: Jan 17 2008 2:16AM
DOI: 10.1002/adma.200701018

	Fault-tolerant actuators. Single-walled carbon nanotubes were studied as new compliant electrodes for dielectric elastomers. The spray-coated SWNT electrodes drive electromechanical strains greater than 200 %. When a fault is present due to pin puncture or internal defect in the elastomer films, dielectric breakdown causes localized self-clearing of the SWNT electrodes and isolation of the fault. The increased fault tolerance may enhance the actuation reliability of dielectric elastomers actuators.

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Volume 20 Issue 4 , Pages 639 - 848 (February, 2008)

#11. Grinding a Nanotube (p 724-728)

M. S. Wang, Q. Chen, L.-M. Peng
Published Online: Jan 29 2008 8:21AM
DOI: 10.1002/adma.200702411

	The morphology of individual carbon nanotubes is precisely engineered by positive field evaporation and this process is monitored in situ by transmission electron microscopy, as shown in the figure. The evaporation process enables accurate control over the grinding and shortening of the nanotubes and the opening of their end caps.

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Volume 20 Issue 5 , Pages 855 - 1078 (March, 2008)

#12. Light-Induced Charge Transfer in Pyrene/CdSe-SWNT Hybrids (p 939-946)

L. Hu, Y.-L. Zhao, K. Ryu, C. Zhou, J. F. Stoddart, G. Grüner
Published Online: Feb 5 2008 7:35AM
DOI: 10.1002/adma.200701125

	Hybrids of pyrene/CdSe-single-walled carbon nanotubes (SWNTs) are fabricated by self-assembling surface-functionalized pyrene/CdSe nanoparticles onto CVD-grown SWNTs. Light- induced charge transfer from the nanoparticles to the nanotubes is determined from the threshold voltage shift of a SWNT field-effect transistor, yielding a maximum value of 2.2 electrons per pyrene/CdSe nanoparticle.

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#13. Room-Temperature Growth of Uniform Tellurium Nanorods and the Assembly of Tellurium or Fe₃O₄ Nanoparticles on the Nanorods (p 947-952)
J. Yuan, H. Schmalz, Y. Xu, N. Miyajima, M. Drechsler, M. W. Möller, F. Schacher, A. H. E. Müller
Published Online: Feb 8 2008 8:02AM
DOI: 10.1002/adma.200701756

	Uniform and single-crystalline tellurium (Te) nanorods with high aspect ratio (20) are prepared via a cylindrical polymer brush-assisted method in THF at room temperature. These rods are well dispersed and stable in solution. Te nanorods prepared by this method are successfully used as template to assemble inorganic (Te or Fe3O4) nanoparticles on the nanorod surface to form a Te nanorod / Te or Fe3O4 nanoparticle complex structure (see figure).

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