scholarly journals Observation and Characterization of Fragile Organometallic Molecules Encapsulated in Single-Wall Carbon Nanotubes

2014 ◽  
Vol 2014 ◽  
pp. 1-5
Author(s):  
Daisuke Ogawa ◽  
Ryo Kitaura ◽  
Takeshi Saito ◽  
Shinobu Aoyagi ◽  
Eiji Nishibori ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
High Yield ◽  
Single Wall Carbon Nanotubes ◽  
X Ray Diffraction ◽  
Single Wall Carbon ◽  
X Ray ◽  
Transmission Electron ◽  
Organometallic Molecules ◽  
X Ray Absorption

Thermally fragile tris(η5-cyclopentadienyl)erbium (ErCp3) molecules are encapsulated in single-wall carbon nanotubes (SWCNTs) with high yield. We realized the encapsulation of ErCp3with high filling ratio by using high quality SWCNTs at an optimized temperature under higher vacuum. Structure determination based on high-resolution transmission electron microscope observations together with the image simulations reveals the presence of almost free rotation of each ErCp3molecule in SWCNTs. The encapsulation is also confirmed by X-ray diffraction. Trivalent character of Er ions (i.e., Er3+) is confirmed by X-ray absorption spectrum.

Unraveling van Hove singularities in x-ray absorption response of single-wall carbon nanotubes

2007 ◽  
Vol 75 (23) ◽  
Author(s):  
C. Kramberger ◽  
H. Rauf ◽  
H. Shiozawa ◽  
M. Knupfer ◽  
B. Büchner ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon ◽  
X Ray ◽  
Van Hove Singularities ◽  
X Ray Absorption

scholarly journals Anisotropy in the X-ray absorption of vertically aligned single wall carbon nanotubes

2007 ◽  
Vol 244 (11) ◽  
pp. 3978-3981 ◽  
Author(s):  
C. Kramberger ◽  
H. Shiozawa ◽  
H. Rauf ◽  
A. Grüneis ◽  
M. H. Rümmeli ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon ◽  
X Ray ◽  
Vertically Aligned ◽  
X Ray Absorption

Diameter Analysis of Rebundled Single-Wall Carbon Nanotubes Using X-ray Diffraction: Verification of Chirality Assignment Based on Optical Spectra

2008 ◽  
Vol 112 (41) ◽  
pp. 15997-16001 ◽  
Author(s):  
Yasumitsu Miyata ◽  
Kazuhiro Yanagi ◽  
Yutaka Maniwa ◽  
Takeshi Tanaka ◽  
Hiromichi Kataura
Keyword(s):  
Carbon Nanotubes ◽  
Optical Spectra ◽  
Single Wall Carbon Nanotubes ◽  
X Ray Diffraction ◽  
Single Wall Carbon ◽  
X Ray

scholarly journals Single Wall Carbon Nanotubes Filled with Metallocenes: a First Example of Non-Fullerene Peapods

2001 ◽  
Vol 706 ◽  
Author(s):  
F. Stercel ◽  
N. M. Nemes ◽  
J. E. Fischer ◽  
D. E. Luzzi
Keyword(s):  
Carbon Nanotubes ◽  
Vapor Phase ◽  
The Other ◽  
Irradiation Damage ◽  
Single Wall Carbon Nanotubes ◽  
Chemical Bonds ◽  
Single Wall Carbon ◽  
X Ray ◽  
Transmission Electron ◽  
Iron Chromium

AbstractWe report the synthesis and analysis of metallocenes (ferrocene, chromocene, ruthenocene, vanadocene, tungstenocene-dihydride) encapsulated in single wall carbon nanotubes (SWNTs). In the case of ferrocene, efficient filling of the SWNTs was accomplished from both the liquid and the vapor phase. The other two metallocenes were filled from the vapor phase. High resolution transmission electron microscopy reveals single molecular chains of metallocenes inside SWNTs. Molecules move under the electron beam in the SWNTs indicating the absence of strong chemical bonds between each other and the SWNT wall. Their movement freezes after short illumination as a result of irradiation damage. Energy dispersive X-ray spectrometry confirms the presence of iron, chromium, ruthenium, vanadium and tungsten.

scholarly journals Synthesis and Characterization of Nitrogen-doped Carbon Nanotubes Derived from g-C3N4

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1349 ◽  
Author(s):  
Klaudia Maślana ◽  
Ryszard J. Kaleńczuk ◽  
Beata Zielińska ◽  
Ewa Mijowska
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor ◽  
X Ray Diffraction ◽  
X Ray ◽  
Force Microscopy ◽  
Nitrogen Doped ◽  
Atomic Force ◽  
Transmission Electron ◽  
Nitrogen Doped Carbon

Here, nitrogen-doped carbon nanotubes (CNT-N) were synthesized using exfoliated graphitic carbon nitride functionalized with nickel oxides (ex-g-C3N4-NixOy). CNT-N were produced at 900 °C in two steps: (1) ex-g-C3N4-NixOy reduction with hydrogen and (2) ethylene assisted chemical vapor deposition (CVD). The detailed characterization of the produced materials was performed via atomic force microscopy (AFM), transmission electron microscopy (TEM), Raman spectroscopy, X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The possible mechanism of nanotubes formation is also proposed.

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