1 Bibliographic Information
MWCNT-ba sed Ag2S-TiO2 nanocomposites photocatalyst: ultra sound-a ssisted synthesis, characterization and enhanced catalytic efficiency.Zhu, Lei; Meng,
Ze-Da; Oh, Won-Chun. Department of Advanced Materials Science & Engineering, Hanseo University, Chungnam, S. Korea. Journal of Nanomaterials (2012), 586526, 10 pp. Publisher: Hindawi Publishing Corp., CODEN: JNOABP ISSN: 1687-4129. Journal; Online Computer File written in English. AN 2012:1116139 CA PLUS
Abstract
Multiwalled carbon nanotube based nanoscale Ag2S and TiO2 composites have successfully synthesized via a facile ultrasound-assisted method. The nanocomposites were characterized by Fourier transform IR (FT-IR) spectroscopy, UV-vis absorption spectra, BET surface area measurements, X-ray diffraction (XRD) and transmission electron microscopy (TEM). The Ag2S-TiO2/CNT nanocomposites exhibited much higher photocatalytic activity than pure TiO2 for the degrdn. of Rhodamine B (Rh.B) under UV and visible light. The improved photocatalytic activities may be attributed to increased adsorbability of Rh.B mols. and increased charge transfer rate in the presence of a one-dimensional MWCNT network.
Indexing -- Section 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes)
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9) Andrews, R; Accounts of Chemical Research 2002, 35(12), 1008
10) Ruan, S; Polymer 2003, 44(19), 5643
11) Xu, Y; Polymer 2005, 46(3), 799
12) Wang, F; Carbon 2005, 43(8), 1716
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14) Liu, Y; Materials Chemistry and Physics 2005, 91(2-3), 365
15) Kim, H; Journal of Crystal Growth 2003, 255(1-2), 114
16) Cho, N; Advanced Materials 2007, 19(2), 232
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18) Hodes, G; Nature 1976, 261(5559), 403
19) Kryukov, A; Theoretical and Experimental Chemistry 2000, 36(2), 63
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2 Bibliographic Information
Synthe sis and characterizations of poly(3-hexylthiophene) and modified carbon nanotube composite s.Karim, Mohammad Rezaul. Center of Excellence for Research in Engineering Materials, College of Engineering, King Saud University, Riyadh, Saudi Arabia. Journal of Nanomaterials (2012), 174353, 8 pp. Publisher: Hindawi Publishing Corp., CODEN: JNOABP ISSN: 1687-4129. Journal; Online Computer File written in English. AN 2012:1116124 CAPLUS
Abstract
Poly(3-hexylthiophene) and modified (functionalized and silanized) multiwall carbon nanotube (MWNT) nanocomposites have been prepd. through in situ polymn. process in chloroform medium with FeCl3 oxidant at room temp. The composites are characterized through Fourier transfer IR spectroscopy (FT-IR), Raman and X-ray diffraction (XRD) measurements to probe the nature of interaction between the moieties. Optical properties of the composites are measured from UV-visible (UV-Vis) and photoluminescence (PL) spectroscopy. Cond. of the composites is followed by four probe techniques to understand the conduction mechanism. The change (if any) in C=C sym. and antisym. stretching frequencies in FT-IR, the shift in G band frequencies in Raman, any alterations in max of UV-Vis and PL spectroscopic measurements are monitored with modified MWNT loading in the polymer matrix.
Indexing -- Section 37 (Plastics Manufacture and Processing)
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3 Bibliographic Information
A peptide receptor-based bioelectronic nose for the real-time determination of seafood quality.Lim, Jong Hyun; Park, Juhun; Ahn, Jung Ho; Jin, Hye Jun; Hong, Seunghun; Park, Tai Hyun. School of Chemical and Biological Engin eering, Seoul National University, Seoul, Biosensors & Bioelectronics Ahead of Print. Publisher: Elsevier B.V., CODEN: BBIOE4 ISSN: 0956-5663. Journal written in English. AN
2012:1207981 CAPLUS
Abstract
We herein report a peptide receptor-based bioelectronic nose (PRBN) that can det. the quality of seafood in real-time through measuring the amt. of trimethylamine (TMA) generated from spoiled seafood. The PRBN was developed using single walled-carbon nanotube field-effect transistors (SWNT-FETs) functionalized with olfactory receptor-derived peptides (ORPs) which can recognize TMA and it allowed us to sensitively and selectively detect TMA in
real-time at concns. as low as 10 fM. Utilizing these properties, we were able to not only det. the quality of three kinds of seafood (oyster, shrimp, and lobster), but were also able to distinguish spoiled seafood from other types of spoiled foods without any pretreatment processes. Esp., the use of small synthetic peptide rather than the whole protein allowed PRBNs to be simply manufd. through a single-step process and to be reused with high reproducibility due to no requirement of lipid bilayers. Furthermore, the PRBN was produced on a portable scale making it effectively useful for the food industry where the on-site measurement of seafood quality is required.
Indexing -- Section 17 (Food and Feed Chemistry)
4 Bibliographic Information
Thermal conductivity of a graphene oxide- carbon nanotube hybrid/epoxy composite.Im, Hyungu; Kim, Jooheon. School of Chemical Engineering and Materials Science, Chung-Ang University, Seoul, Carbon Ahead of Print. Publisher: Elsevier Ltd., CODEN: CRBNAH ISSN: 0008-6223. Journal written in English. AN 2012:1207821 CAPLUS
Abstract
Thermally conductive graphene oxide (GO)-multi-wall carbon nanotube (MWCNT)/epoxy composite materials were fabricated by epoxy wetting. The polar functionality on the GO surface allowed the permeation of the epoxy resin due to a secondary interaction between them, which allowed the fabrication of a composite contg. a high concn. of this hybrid filler. The thermal transport properties of the composites were maximized at 50 wt.% of filler due to
fixed pore vol. fraction in filtrated GO cake. When the total amt. of filler was fixed 50 wt.% while changing the amt. of MWCNTs, a max. thermal cond. was obtained with the addn. of about 0.36 wt.% of MW CNTs in the filler. Measured thermal cond. was higher than the predicted value based on the by Max well-Garnett (M-G) approxn. and decreased for MWCNT concns. above 0.4%. The increased thermal cond. was due to the formation of 3-D heat conduction paths by the addn. of MWCNTs. Too high a MWCNT concn. led to increased phonon scattering, which in turn led to decreased thermal cond. The measured storage modulus was higher than that of the solvent mixed composite because of the insufficient interface between the large amt. of filler and the epoxy.
Indexing -- Section 37 (Plastics Manufacture and Processing)
5 Bibliographic Information
An experimental method to determine the resistance of a vertically aligned carbon nanotube forest in contact with a conductive layer.Vo, T. T.; Poulain, C.; Dijon, J.; Fournier, A.; Chevalier, N.; Mariolle, D. CEA-LETI, 17 rue des Martyrs 38054 Grenoble Cedex 9, Fr. Journal of Applied Physics Ahead of Print. Publisher: American Institute of Physics, CODEN: JAPIAU ISSN: 0021-8979. Journal written in English.
AN 2012:1207812 CAPLUS
Abstract
High d. vertically aligned carbon nanotube (VACNT) forests are considered as a promising conductive material for many applications (interconnects in microelectronics or contact material layer in sliding contact applications). It is thus crucial to characterize the elec. resistance of these forests, esp. in contact with the inherent top/bottom conductive substrates. This paper aims to develop an original method to det. the contribution of the different terms in this elec. resistance, which is measured with a tipless at. force microscope used in high accuracy "force mode." VACNT stacks with different heights on AlCu substrate with or without Au/Pd top coating are studied. The elec. contact area between the probe tip and the forest is considered to be equiv. to the classical elec. contact area between a tip and a rough surface. With this assumption, the scattering resistance of a mono-wall CNT is 14.6 k$$ohm$$ m-1, the top/bottom contact resistance is, resp., 265 k$$ohm$$/385 k$$ohm$$. The bottom resistance divided in half is obtained by an interface substrate/CNT catalyst treatment. The same assumption leads to an effective compressive modulus of 175 MPa. These results are consistent with the values published by other authors. The proposed met hod is effective to optimize the CNT interface contact resistance before integration in a more complex functional structure.
Indexing -- Section 76 (Electric Phenomena)
6 Bibliographic Information
Synthe sis of multiwalled carbon nanotube /fluorine-containing poly(p-phenylene benzoxazole) composite s exhibiting greatly enhanced dielectric constants.
Zhuang, Qixin; Mao, X iaoyang; X ie, Zhong; Liu, X iaoyun; Wang, Qing; Chen, Yi; Han, Zhewen. Key Laboratory for Ultrafine Materials of the Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, Peop. Rep. China. Journal of Polymer Science, Part A: Polymer Chemistry Ahead of Print. Publisher: John Wiley & Sons, Inc., CODEN: JPACEC ISSN: 0887-624X. Journal
written in English. AN 2012:1206836 CAPLUS
Abstract
A series of high-performance polymer/carbon nanotube (CNT) composites with different nanotube contents have been prepd. via condensation of N-silylated diamino terminated precursor of the polymer with acid chloride-functionalized CNTs and subsequent thermal cyclodehydration. The composites have been fully characterized by IR and Raman spectroscopy, electron microscopy, and thermal anal. Various interesting morphol. features including helical structures have been obsd. in the composites as a result of covalent attachment of the polymer. The composites exhibit excellent thermal stability and a significant improvement in the dielec. const. and mech. strength with the inclusion of CNTs. 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012.
Indexing -- Section 35 (Chemistry of Synthetic High Polymers)
7 Bibliographic Information
Multiwalled Carbon Nanotube -Induced Gene Signatures in the Mouse Lung: Potential Predictive Value for Human Lung Cancer Risk and Prognosis.Guo, Nancy L.; Wan, Ying-Wooi; Denvir, James; Porter, Dale W.; Pacurari, Maricica; Wolfarth, Michael G.; Castranova, Vincent; Qian, Yong. Mary Babb Randolph Cancer Center,
West Virginia University, Morgantown, WV, USA. Journal of Toxicology and Environmental Health, Part A: Current Issues (2012), 75(18), 1129-1153. Publisher: Taylor & Francis, Inc., CODEN: JTEHF8 ISSN: 1528-7394. Journal; Online Computer File written in English. AN 2012:1206812 CAPLUS
Abstract
Concerns over the potential for multiwalled carbon nanotubes (MWCNT) to induce lung carcinogenesis have emerged. This study sought to (1) identify gene expression signatures in the mouse lungs following pharyngeal aspiration of well-dispersed MWCNT and (2) det. if these genes were assocd. with human lung cancer risk and progression. Genome-wide mRNA expression profiles were analyzed in mouse lungs (n = 160) exposed to 0, 10, 20, 40,
or 80 μg of MWCNT by pharyngeal aspiration at 1, 7, 28, and 56 d postexposure. By using pairwise statistical anal. of microarray (SAM) and linear modeling, 24 genes were selected, which have significant changes in at least two time points, have a more than 1.5-fold change at all doses, and are significant in the linear model for the dose or the interaction of time and dose. Addnl., a 38-gene set was identified as related to cancer from 330 genes differentially expressed at d 56 postexposure in functional pathway anal. Using the expression profiles of the cancer-related gene set in 8 mice at d 56 postexposure to 10 μg of MWCNT, a nearest centroid classification accurately predicts human lung cancer survival with a significant hazard ratio in training set (n = 256) and test set (n = 186). Furthermore, both gene signatures were assocd. with human lung cancer risk (n = 164) with significant odds ratios. These results may lead to development of a surveillance approach for early detection of lung cancer and prognosis assocd. with MWCNT in the workplace.
Indexing -- Section 4 (Toxicology)
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8 Bibliographic Information
Towards quantifying the electrostatic transduction mechanism in carbon nanotube molecular sensors.Lerner, Mitchell B.; Resczenski, James M.; Amin, Akshay; Johnson, Robert R.; Goldsmith, Jonas I.; Johnson, A. T. Charlie. Journal of the American Chemical Society Ahead of Print. Publisher: American Chemical Society, CODEN: JACSAT ISSN: 0002-7863. Journal written in English. AN 2012:1206069 CAPLUS
Abstract
Despite the great promise of carbon nanotube field effect transistors (CNT FETs) for
applications in chem. and biochem. detection, a quant. understanding of sensor responses is lacking. To explore the role of electrostatics in sensor transduction, expts. were conducted with a set of highly similar compds. designed to adsorb onto the CNT FET via a pyrene linker group and take on a set of known charge states under ambient conditions. Acidic and basic species were obsd. to induce threshold voltage shifts of opposite sign, consistent with gating of the CNT FET by local charges due to protonation or deprotonation of pyrene compds. by interfacial water. The magnitude of the gate voltage shift was controlled by the distance between the charged group and the CNT. Addnl., functionalization with an un-charged pyrene compd. showed a threshold shift ascribed to its mol. dipole moment. This work illustrates a method to produce CNT FETs with controlled values of the turnoff gate voltage, and more generally, these results will inform the development of quant. models for the response of CNT FET chem. and biochem. sensors.
Indexing -- Section 80 (Organic Analytical Chemistry)
9 Bibliographic Information
Carbon nanotube -radical polymer composite and production method therefor. Geckeler, Kurt E.; Nishide, Hiroyuki; Choi, Seok Ju; Choi, Wonsung. (Gwangju Institute of Science and Technology, S. Korea). PCT Int. Appl. (2012), 22pp. CODEN:
PIXXD2 WO 2012108619 A1 20120816 Designated States W: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH. Designated States RW: AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IS, IT, LU, MC, MT, NL, NO, PT, SE, SM, TR, BF, BJ, CF, CG, CI, CM, GA, ML, MR, NE, SN, TD, TG. Patent written in Korean. Application: WO 2011-KR9552 20111212. Priority: KR 2011-11073 20110208. AN 2012:1205785 CAPLUS
Patent Family Information
Patent No. Kind Date Application No.Date WO 2012108619 A1 20120816 WO 2011-KR9552 20111212 W: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
RW: AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR, BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG, BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD,
SL, SZ, TZ, UG, ZM, ZW, AM, AZ, BY, KG, KZ, MD, RU, TJ, TM
Priority Application
KR 2011-11073 A 20110208
Abstract
The present invention relates to a carbon nanotube-radical polymer composite and to a prodn. method therefor, and relates to a polymer composite comprising carbon nanotubes and a radical polymer; being a carbon nanotube-radical polymer composite that has outstanding elec. cond. and transparency and can be used in permeable batteries or flexible batteries, and also relates to a prodn. method therefor.
Indexing -- Section 37 (Plastics Manufacture and Processing)
10 Bibliographic Information
Cracked gas sensing device [Machine Translation].Suehiro, Junya; Nakano, Michihiko. (Kyushu University, Japan). Jpn. Kokai Tokkyo Koho (2012), 14pp. CODEN: JKXXAF JP 2012154692 A 20120816 Patent written in Japanese. Application: JP 2011-12183 20110124. Priority: JP 2011-12183 20110124. AN 2012:1204658 CAPLUS
Patent Family Information
Patent No. Kind Date Application No.Date
JP 2012154692 A 20120816 JP 2011-12183 20110124
Priority Application
JP 2011-12183 20110124
Abstract
[Machine Translation of Descriptors]. The CNT gas sensor which can detect cracked gas in the high sensitivity is used for the off-line inspection in the equipment check of GIS. The
well-closed container 31 in which insulating gas was enclosed, the vent 32 to which insulating gas is aerated, and the conduit 33 which connects with a vent 32 and conducts insulating gas, it is a cracked gas sensing device which carries out the equipment check of the gas insulated switchgear 30 equipped with the valve 34 on which the halfway part of conduit 33 sets and the conduction of insulating gas is regulated, conduit -- the insulating gas supplied from the opening port of 33 edge with the airtight container 20 introduced by the vacuum or a neg.
pressure state, the bridged structure of the a pair of micro electrode in which the edge which is set in the airtight container 20 and generates a non uniform elec. field was set, and the carbon nanotube (CNT) according to a non uniform elec. field, it has the above, CNT adsorbs the cracked gas emitted by decompn. of insulating gas, and is prepd. with the CNT gas sensor 1 which detects cracked gas based on change of the micro inter-electrode elec. property formed by adsorption.
Indexing -- Section 47 (Apparatus and Plant Equipment)
11 Bibliographic Information
Method for preparing cnt film.Lee, Dong Myeon; Park, Do Hyeong; Yoon, Yeo Hwan. (Top Nanosys, Inc., S. Korea). Repub. Korea (2012), 8pp. CODEN: KRXXFC
KR 1173516 B1 20120814 Patent written in Korean. Application: KR
2010-33949 20100413. Priority: KR 2010-33949 20100413. AN 2012:1204454 CAPLUS
Patent Family Information
Patent No. Kind Date Application No.Date
KR 1173516 B1 20120814 KR 2010-33949 20100413 KR 2011114348 A 20111019
WO 2011129613 A2 20111020 WO 2011-KR2638 20110413 WO 2011129613 A3 20120405
W: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
RW: AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR, BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG, BW, GH, GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW, AM, AZ, BY, KG, KZ, MD, RU, TJ, TM
Priority Application
KR 2010-33949 A 20100413
Abstract
The title method comprises: (1) forming a CNT (carbon nanotube) coating layer contg. CNT on a base material, (2) forming a masking layer composed of a nonconductive material on the
upper face of the CNT coating layer, wherein the masking layer is provided with a patterned hollow part, (3) performing dry etching for the CNT coating layer that is not covered by the masking layer, and (4) removing the masking layer. The masking layer is formed through performing screen coating for the upper face of the CNT coating layer using a masking layer material.
Indexing -- Section 76 (Electric Phenomena)
12 Bibliographic Information
Method for manufacturing carbon nanomaterials with carbon nanotube
-nanofiber block structure s.Choi, Nam Seon; Sung, Hyeon Gyeong; Jang, Yeong Chan. (Kumho Petrochemical Co., Ltd., S. Korea). Repub. Korean Kongkae Taeho Kongbo (2012), 11pp. CODEN: KRXX A7 KR 2012089519 A 20120813 Patent written in Korean. Application: KR 2010-129037 20101216. Priority: KR 2010-129037 20101216. AN 2012:1204441 CAPLUS
Patent Family Information
Patent No. Kind Date Application No.Date KR 2012089519 A 20120813 KR 2010-129037 20101216
Priority Application
KR 2010-129037 20101216
Abstract
The title carbon nanotube-nanofiber block structures comprise carbon nanotube blocks, herringbone structures, and carbon nanofiber blocks. The carbon nanofiber blocks linearly connect the carbon nanotube blocks and herringbone structures. The carbon nanotube blocks have hollow parts and graphite layers parallel to fiber axis. The carbon nanofiber blocks do not have graphite layers parallel to the fiber axis.
Indexing -- Section 49 (Industrial Inorganic Chemicals)
13 Bibliographic Information
A conductor and its manufacturing method [Machine Translation].Imazu, Naoki; Watanabe, Osamu; Nakajima, Naotoshi; Fujigaya, Takehiko. (Kyushu University, Japan; Toray Industries, Inc.). Jpn. Kokai Tokkyo Koho (2012), 16pp. CODEN: JKXXAF JP 2012155989 A 20120816 Patent written in Japanese. Application: JP
2011-13844 20110126. Priority: JP 2011-13844 20110126. AN 2012:1204416 CAPLUS
Patent Family Information
Patent No. Kind Date Application No.Date
JP 2012155989 A 20120816 JP 2011-13844 20110126
Priority Application
JP 2011-13844 20110126
Abstract
[Machine Translation of Descriptors]. It excels in heat-resistant stability and a wetproof thermostability, and the conductive body of high cond. and its easy method for manufg. are provided. A carbon nanotube [A] and a CM-cellulose [B], the mass ratio (contents of contents [ of [B] ]/[A]) of [B] to [A] is contained by 0.5-9, the dispersion which made water [C] the dispersion medium to the coating surface where it applied and [A] was dried on the base material so that it might become the range of 1-40mg/m2, the mass ratio (contents of contents [ of [D] ]/[E]) of [D] the processing fluid which is 0.005-0.1 25?C-100?C, [ to [E] for an acid catalyst [D] and alc. [E] ], the method for manufg. of the conductor characteristic of making it dry, after making it contact on the conditions for 5 s - 20 min.
Indexing -- Section 76 (Electric Phenomena)
14 Bibliographic Information
Conformational changes of fibrinogen in dispersed carbon nanotubes.Park, Sung Jean; Khang, Dongwoo. College of Pharmacy, Gachon University, Incheon, S. Korea. International Journal of Nanomedicine (2012), 7 4325-4333. Publisher: Dove Medical Press Ltd., CODEN: IJNNHQ ISSN: 1178-2013. Journal; Online Computer File written in English. AN 2012:1204198 CAPLUS
Abstract
The conformational changes of plasma protein structures in response to carbon nanotubes are crit. for detg. the nanotoxicity and blood coagulation effects of carbon nanotubes. In this study, we identified that the functional intensity of carboxyl groups on carb on nanotubes, which correspond to the water dispersity or hydrophilicity of carbon nanotubes, can induce conformational changes in the fibrinogen domains. Also, elevation of carbon nanotube d. can alter the secondary structures (i.e., helixes and beta she ets) of fibrinogen. Furthermore, fibrinogen that had been in contact with the nanoparticle material demonstrated a different
pattern of heat denaturation compared with free fibrinogen as a result of a variation in hydrophilicity and concn. of carbon nanotubes. Considering the importance of interactions between carbon nanotubes and plasma proteins in the drug delivery system, this study elucidated the correlation between nanoscale physiochem. material properties of carbon nanotubes and assocd. structural changes in fibrinogen.
Indexing -- Section 4 (Toxicology)
Citations
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15 Bibliographic Information
Synthe sis of multi-walled carbon nanotubes in an arc discharge using hydrocarbons precursor as carbon source s.Teymourzadeh, Mehrdad; Kangarlou, Haleh. Materials Research School, Nuclear Science and Technology
Research Institute, Bonab, Iran. World Applied Sciences Journal (2012), 18(7),
879-883. Publisher: International Digital Organization for Scientific Information, CODEN: WASJBM ISSN: 1991-6426. Journal; Online Computer File written in English. AN 2012:1204154 CAPLUS
Abstract
The influence of starting carbon materials on the synthesis of carbon nanotubes (CNTs) is investigated. Comparisons are made between graphite rods and polycyclic arom. hydrocarbons (PAHs) as carbon sources in helium arc discharge. The major parameters are also evaluated in order to obtain high-yield and high-quality carbon nanotubes. The cathode deposits are examd. using SEM (SEM) and scanning probe microscopy (SPM) in AFM mode to det. the microstructure and nanostructure of carbon nanotubes. The SEM investigation of the carbon nanotube deposits formed on the cathode provides evidence that PAHs can serve as building blocks for nanotube formation. The high-temp. graphitization process induced by the arc plasma enables the hydrocarbons to act as carbon sources and changes the arom. species into the layered graphite structure of CNT. These polycyclic arom. hydrocarbons not only act as the precursors but also enhance the prodn. rate of carbon nanotubes. The PAH precursors thus play an important role in the mass prodn. of carbon nanotubes.
Indexing -- Section 57 (Ceramics)
Citations
1) Kroto, H; Nature 1985, 318, 162
2) Lijima, S; Nature 1991, 354, 56
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16 Bibliographic Information
Present status and future perspective of dye-sensitized solar cell development. Ozawa, Hironobu; Arakawa, Hironori. Dep. of Industrial Chemistry, Fac. of Engineering, Tokyo Univ. of Science, 12-1 Ichigaya-Funagawara-cho, Shinjuku-ku, Tokyo, Japan. Journal of the Japan Institute of Energy (2012), 91(5), 369-375. Publisher: Nippon Enerugi Gakkai, CODEN: JJIECE Journal written in Japanese. AN 2012:1203897 CAPLUS
Abstract
In this review, current situation of the important components of dye-sensitized solar cells (DSCs) such as TiO2 photoelectrode. electrolyte, counter electrode and dyes are described. In order to develop efficient TiO2 photoelectrode, morphol. control of nanocryst. TiO2 is important to improve the electron cond. and to enlarge the surface area. Cobalt complexes or org. radicals are employed as electron mediator in the electrolyte instead of iodine. Larger open-circuit voltage was successfully obtained in the DSCs with these electron mediators. Carbon materials, such as carbon black, graphene and carbon nanotube, are utilized as a counter electrode instead of platinum to reduce the prodn. cost of DSCs. Almost the same conversion efficiency was obtained in the DSCs with carbon material counter electrode compared to those with platinum one. Highly efficient dyes, not only ruthenium complex dyes but also porphyrine dyes, have been thus far developed. In addn., solar cell performance of the DSCs with these highly efficient dyes is further improved by cosensitization method. The highest conversion efficiency (12.3%) was obtained in this multiple dye system (100 mW/cm2, active area: 0.36 cm2).
Indexing -- Section 52 (Electrochemical, Radiational, and Thermal Energy Technology)
17 Bibliographic Information
Deformation and capillary self-repair of carbon nanotube brushe s.
Pushparaj, V.; Mahadevan, L.; Sreekala, S.; Ci, L.; Nalamasu, R.; Ajayan, P. M. Materials Science and Engineering. Dept., Rensselaer Polytechnic Institute, Troy, NY, USA. Carbon Ahead of Print. Publisher: Elsevier Ltd., CODEN: CRBNAH ISSN:
0008-6223. Journal written in English. AN 2012:1202085 CAPLUS
Abstract
Brushes with nanoscale bristles, such as nanotube arrays held together by van der Waals
forces, have applications as compliant elec. switches, probes and micro-scale cleaning tools. Repeated use exposes the brushes to contact and impact at high strains resulting in the bristles undergoing exfoliation, deformation and damage. We show that the damages incurred can be nearly recovered by capillary evapn. of solvents from the free standing aligned nanotube brushes.
Indexing -- Section 57 (Ceramics)
18 Bibliographic Information
Detection of O3 and NH3 using hybrid tin dioxide/ carbon nanotubes sensors: Influence of materials and processing on sensor's sensitivity.Ghaddab, B.; Sanchez, J. B.; Mavon, C.; Paillet, M.; Parret, R.; Zahab, A. A.; Bantignies, J.-L.; Flaud, V.; Beche, E.; Berger, F. UFR ST, La Bouloie, Laboratoire de Chimie-Physique et Rayonnements Alain Chambaudet UMR CEA-E4, Besancon Cedex, Fr. Sensors and Actuators, B: Chemical (2012), 170 67-74. Publisher: Elsevier B.V., CODEN: SABCEB ISSN: 0925-4005. Journal; Online Computer File written in English. AN 2012:1201945 CAPLUS
Abstract
A SnO2/arc-discharge single walled carbon nanotubes (SWNTs) hybrid material based sensor was developed for the detection of NH3 and O3 at room temp. The gas sensitive composite thin films were prepd. using sol gel and dip coating techniques, and characterized by TEM, AFM, and Raman spectroscopy. Overall, the hybrid material-based sensor is found to have an enhanced sensitivity as compared to pure SnO2 or pure SWNTs based sensors. An optimum annealing temp. of the composite of 300 was detd. The detection limit at room temp. was evaluated at 1 ppm and <20 ppb for NH3 and O3, resp. Moreover, the hybrid sensor exhibited a fast response (few minutes), a good sensitivity and a full recovery at room temp. The sensor efficiency was also demonstrated to strongly depend on the SWNT source used for sensor fabrication (4 different com. sources were tested). These results open the way towards further optimized hybrid sensors.
Indexing -- Section 79-2 (Inorganic Analytical Chemistry)
Nanotubes
(carbon; detection of O3 and NH3 using hybrid tin dioxide/carbon nanotubes sensors)
Nanocomposites
Semiconductor gas sensors
(detection of O3 and NH3 using hybrid tin dioxide/carbon nanotubes sensors)
7664-41-7, Ammonia
10028-15-6, Ozone
Role: ANT (Analyte); ANST (Analytical study)
(detection of O3 and NH3 using hybrid tin dioxide/carbon nanotubes sensors)
18282-10-5P, Tin dioxide
Role: ARU (Analytical role, unclassified); SPN (Synthetic preparation); TEM (Technical or engineered material use); ANST (Analytical study); PREP (Preparation); USES (Uses) (detection of O3 and NH3 using hybrid tin dioxide/carbon nanotubes sensors)
10026-06-9, Tin tetrachloride pentahydrate
Role: PEP (Physical, engineering or chemical process); PROC (Process)
(detection of O3 and NH3 using hybrid tin dioxide/carbon nanotubes sensors)
7440-44-0, Carbon
Role: ARU (Analytical role, unclassified); TEM (Technical or engineered material use); ANST (Analytical study); USES (Uses)
(nanotubes; detection of O3 and NH3 using hybrid tin dioxide/carbon nanotubes sensors)
Supplementary Terms
tin dioxide carbon nanotube nanocomposite ammonia ozone gas sensor
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19 Bibliographic Information
Supersensitive, Ultrafa st, and Broad-Band Light-Harve sting Scheme Employing Carbon Nanotube /TiO2 Core-Shell Nanowire Geometry.Hsu, Chia-Yang; Lien, Der-Hsien; Lu, Sheng-Yi; Chen, Cheng-Ying; Kang, Chen-Fang; Chueh, Yu-Lun; Hsu,
Wen-Kuang; He, Jr-Hau. Department of Electrical Engineering & Institute of Photonics and Optoelectronics, National Taiwan University, Taipei, Taiwan. ACS Nano Ahead of Print. Publisher: American Chemical Society, CODEN: ANCAC3 ISSN: 1936-0851. Journal written in English. AN 2012:1201760 CAPLUS
Abstract
We demonstrate a novel, feasible strategy for practical application of one-dimensional photodetectors by integrating a carbon nanotube and TiO2 in a core-shell fashion for breaking the compromise between the photogain and the response/recovery speed. Radial Schottky barriers between carbon nanotube cores and TiO2 shells and surface states at TiO2 shell surface regulate electron transport and also facilitate the sepn. of photogenerated electrons and holes, leading to ultrahigh photogain (G = 1.4 104) and the ultrashort response/recovery times (4.3/10.2 ms). Addnl., radial Schottky junction and defect band absorption broaden the detection range (UV-visible). The concept using metallic core oxide-shell geometry with radial Schottky barriers holds potential to pave a new way to realize nanostructured photodetectors for practical use.
Indexing -- Section 73 (Optical, Electron, and Mass Spectroscopy and Other Related Properties)
Citations
1) Chen, C; Pure Appl Chem 2008, 82, 2055