Cited Article: Ghosh, S. Carbon nanotube flow sensors
Alert Expires: 22 OCT 2009
Number of Citing Articles: 2 new records this week (2 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
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Title:
Surface Modification of Multiwalled Carbon Nanotubes via Esterification Using a Biodegradable Polyol
Authors:
d'Arlas, BF; Goyanes, S; Rubiolo, GH; Mondragon, I; Corcuera, MA; Eceiza, A
Author Full Names:
Fernandez d'Arlas, B.; Goyanes, S.; Rubiolo, G. H.; Mondragon, I.; Corcuera, M. A.; Eceiza, A.
Source:
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 9 (10): 6064-6071 OCT 2009
Language:
English
Document Type:
Proceedings Paper
Author Keywords:
Multiwalled Carbon Nanotubes; Esterification; Biodegradable Polyol
KeyWords Plus:
POLYURETHANE; ADSORPTION; POLYMERS; SENSORS
Abstract:
Multiwalled carbon nanotubes (MWCNT) were surface modified firstly oxidizing them with a H2SO4/HNO3 mixture to obtain more reactive carboxylic groups on their surface and then higher functionality. Secondly the oxidized nanotubes (MWCNT-COOH) were dispersed in tetrahydrofuran (THF) and made react via esterification with a poly(hexamethylene carbonate-co-caprolactone)diol, a potentially biodegradable polyol with hydroxyl groups at its ends. Modification process steps were (THF) characterized using Fourier transform infrared spectroscopy, FTIR, ultraviolet spectroscopy, UV, solubility in different solvents, thermo-gravimetric analysis, TGA, as well as atomic force microscopy, AFM. Results suggest that surface carboxylic groups are reactive enough to graft polymer chains onto their surface.
Reprint Address:
Eceiza, A, Euskal Herriko Unibertsitatea, Eskola Politeknikoa, Dept Chem & Environm Engn, Mat & Technol Grp, Pza Europa 1, Donostia San Sebastian 20018, Spain.
Research Institution addresses:
[Fernandez d'Arlas, B.; Mondragon, I.; Corcuera, M. A.; Eceiza, A.] Euskal Herriko Unibertsitatea, Eskola Politeknikoa, Dept Chem & Environm Engn, Mat & Technol Grp, Donostia San Sebastian 20018, Spain; [Goyanes, S.; Rubiolo, G. H.] Univ Nac Buenos Aires, CONICET, Lab Polimeros & Mat Compuestos, FCEyN, RA-1428 Buenos Aires, DF, Argentina; [Rubiolo, G. H.] CNEA, Unidad Actividad Mat, RA-1650 Buenos Aires, DF, Argentina
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Cited Reference Count:
20
Times Cited:
0
Publisher:
AMER SCIENTIFIC PUBLISHERS; 25650 NORTH LEWIS WAY, STEVENSON RANCH, CA 91381-1439 USA
Subject Category:
Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
ISSN:
1533-4880
DOI:
10.1166/jnn.2009.1560
IDS Number:
487XE
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Title:
Ultrafast Switching Time and Third Order Nonlinear Coefficients of Microwave Treated Single Walled Carbon Nanotube Suspensions
Authors:
Kamaraju, N; Kumar, S; Karthikeyan, B; Kakade, B; Pillai, VK; Sood, AK
Author Full Names:
Kamaraju, N.; Kumar, Sunil; Karthikeyan, B.; Kakade, Bhalchandra; Pillai, Vijayamohanan K.; Sood, A. K.
Source:
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 9 (9): 5550-5554 SEP 2009
Language:
English
Document Type:
Proceedings Paper
Author Keywords:
Ultra-Fast Switching; SWCNT; Nonlinear Optical Coefficients
KeyWords Plus:
ABSORPTION; FUNCTIONALIZATION
Abstract:
Microwave treated water soluble and amide functionalized single walled carbon nanotubes have been investigated using femtosecond degenerate pump-probe and nonlinear transmission experiments. The time resolved differential transmission using 75 femtosecond pulse with the central wavelength of 790 nm shows a bi-exponential ultrafast photo-bleaching with time constants of 160 fs (130 fs) and 920 fs (300 fs) for water soluble (amide functionalized) nanotubes. Open and closed aperture z-scans show saturation absorption and positive (negative) nonlinear refraction for water soluble (amide functionalized) nanotubes. Two photon absorption coefficient, beta(0) similar to 250 cm/GW (650 cm/GW) and nonlinear index, gamma similar to 15 cm(2)/pW (-30 cm(2)/pW) are obtained from the theoretical fit in the saturation limit to the data for two types of nanotubes.
Reprint Address:
Sood, AK, Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India.
Research Institution addresses:
[Kamaraju, N.; Kumar, Sunil; Karthikeyan, B.; Sood, A. K.] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India; [Kamaraju, N.; Kumar, Sunil; Karthikeyan, B.; Sood, A. K.] Indian Inst Sci, Ctr Ultrafast Laser Applicat, Bangalore 560012, Karnataka, India; [Kakade, Bhalchandra; Pillai, Vijayamohanan K.] Natl Chem Lab, Phys & Mat Chem Div, Pune 411008, Maharashtra, India
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Cited Reference Count:
22
Times Cited:
0
Publisher:
AMER SCIENTIFIC PUBLISHERS; 25650 NORTH LEWIS WAY, STEVENSON RANCH, CA 91381-1439 USA
Subject Category:
Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
ISSN:
1533-4880
DOI:
10.1166/jnn.2009.1184
IDS Number:
487XD
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