Poly(N-vinyl carbazole)-grafted multiwalled carbon nanotubes: Synthesis via direct free radical reaction and optical limiting properties

2007 ◽  
Vol 253 (11) ◽  
pp. 5122-5128 ◽  
Author(s):  
Hui-Xia Wu ◽  
Xue-Qiong Qiu ◽  
Rui-Fang Cai ◽  
Shi-Xiong Qian
Keyword(s):  
Carbon Nanotubes ◽  
Free Radical ◽  
Multiwalled Carbon Nanotubes ◽  
Radical Reaction ◽  
Optical Limiting ◽  
Free Radical Reaction ◽  
Multiwalled Carbon

Benzoyl Peroxide Initiated Grafting of 3-Aminopropyltriethoxysilane to Multiwalled Carbon Nanotubes

2011 ◽  
Vol 364 ◽  
pp. 489-493
Author(s):  
Abdul Shukor Junidah ◽  
Aziz Azizan ◽  
Mariatti Jaafar
Keyword(s):  
Carbon Nanotubes ◽  
Free Radicals ◽  
Benzoyl Peroxide ◽  
Multiwalled Carbon Nanotubes ◽  
Radical Reaction ◽  
Covalent Bond ◽  
Free Radical Reaction ◽  
Multiwalled Carbon ◽  
X Ray ◽  
Transmission Electron

A new method to functionalize multiwalled carbon nanotubes (MWCNT) with 3-aminopropyltriethoxysilane (APTES) has been established using benzoyl peroxide (BPO) as initiator. The functionalization was carried out through free radical reaction by thermal decomposition of benzoyl peroxide at 110°C. The reaction liberated carbon dioxide and generated phenyl free radicals. The phenyl free radicals initiated in-situ functionalization represent a simple means of creating reactive site on the surface of MWNT as well as on APTES. The functionalized MWNT was characterized using X-ray photoelectron microscopy (XPS), X-ray diffraction (XRD) and transmission electron microscopy (TEM). TEM results showed that the APTES has been successfully grafted onto MWNT. Due to the high radical reactive trap of MWNT, APTES radical are easily grafted onto MWNT surface to form covalent bond. XPS results clearly indicate alkoxylsilane and amide groups of APTES were grafted on the MWNT surface with the formation of C-O-Si and C-N bonds as evidence. From the XRD results, it was found that the surface functionalized does not give any effect on the MWNT graphitic structure.

Investigation of Optical Limiting Mechanism in Multiwalled Carbon Nanotubes

1999 ◽  
Vol 597 ◽  
Author(s):  
X. Sun ◽  
Y. N. Xiong ◽  
P. Chen ◽  
J. Y. Lin ◽  
W. Ji ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Black ◽  
Multiwalled Carbon Nanotubes ◽  
Optical Limiting ◽  
Nonlinear Scattering ◽  
Multiwalled Carbon ◽  
Time Resolved ◽  
Pump Probe ◽  
Limiting Behavior ◽  
Energy Dependent

AbstractWe report an investigation into the mechanism responsible for the optical limiting behavior in multiwalled carbon nanotubes. We conducted energy-dependent transmission measurements, picosecond time-resolved pump-probe, and nonlinear scattering experiments at 532-nm wavelength on multiwalled carbon nanotube suspension. For comparison, C60-toluene solution and carbon black suspension were also studied in the same experiments. The similarities that we observed between the multiwalled carbon nanotubes and carbon black suspension suggest that nonlinear scattering, which is known to be responsible for the limiting action in carbon black suspension, should play an important role in the limiting effect in multiwalled carbon nanotubes.

Multiwalled carbon nanotubes noncovalently functionalized by electro-active amphiphilic copolymer micelles for selective dopamine detection

RSC Advances ◽  
2015 ◽  
Vol 5 (24) ◽  
pp. 18233-18241 ◽  
Author(s):  
Xiaoma Fei ◽  
Jing Luo ◽  
Ren Liu ◽  
Jingcheng Liu ◽  
Xiaoya Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Free Radical ◽  
Radical Polymerization ◽  
Multiwalled Carbon Nanotubes ◽  
Amphiphilic Copolymer ◽  
Side Chains ◽  
Multiwalled Carbon ◽  
Dopamine Detection ◽  
Copolymer Micelles ◽  
Selective Dopamine

We have synthesized an electro-active amphiphilic copolymer with carbazole side chains via free radical polymerization using 7-(4-vinylbenzyloxy)-4-methyl coumarin and 9-(4-vinylbenzyl)-9H-carbazole as the monomers.

Investigation of an optical limiting mechanism in multiwalled carbon nanotubes

2000 ◽  
Vol 39 (12) ◽  
pp. 1998 ◽  
Author(s):  
Xuan Sun ◽  
Yuenan Xiong ◽  
Ping Chen ◽  
Jianyi Lin ◽  
Wei Ji ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Optical Limiting ◽  
Multiwalled Carbon

Conjugated polymer covalently modified multiwalled carbon nanotubes for optical limiting

2010 ◽  
Vol 49 (1) ◽  
pp. 101-109 ◽  
Author(s):  
Lijuan Niu ◽  
Peipei Li ◽  
Yu Chen ◽  
Jun Wang ◽  
Jinjuan Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Conjugated Polymer ◽  
Optical Limiting ◽  
Multiwalled Carbon

Broadband optical limiting with multiwalled carbon nanotubes

1998 ◽  
Vol 73 (25) ◽  
pp. 3632-3634 ◽  
Author(s):  
X. Sun ◽  
R. Q. Yu ◽  
G. Q. Xu ◽  
T. S. A. Hor ◽  
W. Ji
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Optical Limiting ◽  
Multiwalled Carbon

scholarly journals Preparation and Optical Limiting Properties of Multiwalled Carbon Nanotubes with π-Conjugated Metal-Free Phthalocyanine Moieties

2009 ◽  
Vol 113 (30) ◽  
pp. 13029-13035 ◽  
Author(s):  
Nan He ◽  
Yu Chen ◽  
Jinrui Bai ◽  
Jun Wang ◽  
Werner J. Blau ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Optical Limiting ◽  
Multiwalled Carbon ◽  
Metal Free

Metal sulfide coated multiwalled carbon nanotubes synthesized by anin situmethod and their optical limiting properties

2009 ◽  
Vol 20 (19) ◽  
pp. 195604 ◽  
Author(s):  
Hui-Xia Wu ◽  
Wei-Man Cao ◽  
Qiang Chen ◽  
Miao-Miao Liu ◽  
Shi-Xiong Qian ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Metal Sulfide ◽  
Optical Limiting ◽  
Multiwalled Carbon
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