Electronic and optical properties of nitrogen-doped multiwalled carbon nanotubes

2006 ◽  
Vol 73 (4) ◽  
Author(s):  
S. H. Lim ◽  
H. I. Elim ◽  
X. Y. Gao ◽  
A. T. S. Wee ◽  
W. Ji ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Optical Properties ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon ◽  
Electronic And Optical Properties ◽  
Nitrogen Doped

Carbon sponge-type nanostructures based on coaxial nitrogen-doped multiwalled carbon nanotubes grown by CVD using benzylamine as precursor

Carbon ◽  
2017 ◽  
Vol 115 ◽  
pp. 409-421 ◽  
Author(s):  
Emilio Muñoz-Sandoval ◽  
Alejandro J. Cortes-López ◽  
Beatriz Flores-Gómez ◽  
Juan L. Fajardo-Díaz ◽  
Roque Sánchez-Salas ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon ◽  
Nitrogen Doped

Synthesis and characterization of multiwalled carbon nanotubes-protoporphyrin IX composites using acid functionalized or nitrogen doped carbon nanotubes

2016 ◽  
Vol 70 ◽  
pp. 65-75 ◽  
Author(s):  
Miriam M. Tostado-Plascencia ◽  
Marciano Sanchez-Tizapa ◽  
Adalberto Zamudio-Ojeda ◽  
Amaury Suárez-Gómez ◽  
Rocío Castañeda-Valderrama ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Protoporphyrin Ix ◽  
Synthesis And Characterization ◽  
Multiwalled Carbon ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon

Tailoring the Seebeck Coefficient of Spray-Coated Poly(3,4-ethylenedioxythiophene): Poly(styrenesulfonate) Films with Nitrogen Doped Multiwalled Carbon Nanotubes

2020 ◽  
Vol 20 (6) ◽  
pp. 3576-3581
Author(s):  
Ruben Sarabia-Riquelme ◽  
Camila Gomez ◽  
Dali Qian ◽  
John Craddock ◽  
Matthew Weisenberger
Keyword(s):  
Carbon Nanotubes ◽  
Seebeck Coefficient ◽  
Multiwalled Carbon Nanotubes ◽  
Thermoelectric Properties ◽  
Composite Films ◽  
Spray Coating ◽  
Multiwalled Carbon ◽  
Nitrogen Doped ◽  
Mwcnt Concentration ◽  
Polyethylene Terephthalate Substrate

The thermoelectric properties of flexible thin films fabricated from two commercial poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) formulations filled with multiwalled carbon nanotubes (MWCNT) and nitrogen-doped MWCNT (N-MWCNT) were investigated. A simple spray-coating method for the fabrication of such flexible films on a polyethylene terephthalate substrate was developed. While increasing the MWCNT concentration had little effect on the thermoelectric properties, increasing the N-MWCNT concentration resulted in the emergence of an overall n-type semiconducting behavior and, thereby, tailoring the Seebeck coefficient of the composite films from p-type to n-type was shown. The Seebeck coefficient of the two PEDOT:PSS formulation films was inverted from 4.1 to −13.3 μV/K and from 12.5 to −10.9 μV/K respectively, with increasing N-MWCNT concentration from 0 to 95 wt.%. The importance of these results for future work stems from the possibility of tailoring the behavior of a typical p-type polymer such as PEDOT:PSS and the effect that the polymer conductive grade has on the switching concentration.

Optical properties of silica aerogels with embedded multiwalled carbon nanotubes

2016 ◽  
Vol 253 (12) ◽  
pp. 2440-2445 ◽  
Author(s):  
Alexander I. Chernov ◽  
Alexander Y. Predein ◽  
Alexander F. Danilyuk ◽  
Vladimir L. Kuznetsov ◽  
Tatyana V. Larina ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Optical Properties ◽  
Multiwalled Carbon Nanotubes ◽  
Silica Aerogels ◽  
Multiwalled Carbon

Influence of growth temperature on the structure, composition and bonding character of nitrogen-doped multiwalled carbon nanotubes

2011 ◽  
Vol 26 (3) ◽  
pp. 443-448 ◽  
Author(s):  
Yu Zhang ◽  
Lujun Pan ◽  
Bin Wen ◽  
Xiaoyang Song ◽  
Chenguang Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Growth Temperature ◽  
Multiwalled Carbon ◽  
Nitrogen Doped ◽  
Image Position

Abstract

scholarly journals Nitrogen-Doped Multiwalled Carbon Nanotubes Inhibit Fat Deposition via Immunomodulatory Actions

2021 ◽  
Author(s):  
Haifang Li ◽  
Xue Xiao ◽  
Geng Hu ◽  
Dalin He ◽  
Wenqian Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Mammalian Cells ◽  
Fat Metabolism ◽  
Fat Deposition ◽  
The Body ◽  
Inflammatory Factors ◽  
Multiwalled Carbon ◽  
Nitrogen Doped

Abstract Multiwalled carbon nanotubes (MWCNTs) offer immense opportunities to deliver drug and biomolecules to targeted tissues. However, it’s unclear for us about their effects on fat metabolism. Here, we demonstrate that nitrogen-doped carboxylate-functionalized MWCNTs (N-MWCNTs) inhibit fat deposition both in vivo and in vitro primarily by suppressing adipogenesis. N-MWCNTs show good biocompatability in HEK293 mammalian cells. Intramuscular administration of N-MWCNTs does not affect the body weight gain and feed intake of mice, but reduces the fat mass. In in vitro-cultured adipocytes, N-MWCNTs suppress fat accumulation, accompanying with decreased and increased expression of adipogenic and lipolysis genes, respectively. Transcriptome analysis further certified the N-MWCNT alteration of fat metabolism-related genes. Interestingly, we observed the phagocytosis of N-MWCNTs by macrophage-like cells via TEM imaging. The mRNA sequencing data also showed remarkable variation of the genes involved in TLRs pathway, ultimately leading to down- or up-regulation of inflammatory factors, of which Tnfα, Il1, Il7, Il10, and Il12 are decreased, whereas Il6 and Il11 are increased. In conclusion, N-MWCNTs induce the production of inflammatory cytokines through immune responses, which trigger the reduction of fat deposition. These findings support the usage of N-MWCNTs as a promising delivery for anti-obesity agents.

Synthesis and the Third-order Nonlinear Optical Properties of Au/Multiwalled Carbon Nanotubes Composites

2015 ◽  
Vol 44 (8) ◽  
pp. 819003 ◽  
Author(s):  
谭云龙 TAN Yun-long ◽  
朱宝华 ZHU Bao-hua ◽  
王记 WANG Ji ◽  
戴树玺 DAI Shu-xi ◽  
顾玉宗 GU Yu-zong
Keyword(s):  
Carbon Nanotubes ◽  
Optical Properties ◽  
Multiwalled Carbon Nanotubes ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Third Order ◽  
Multiwalled Carbon ◽  
The Third
Sign in / Sign up

Export Citation Format

Share Document