scholarly journals Characterization of the Electronic Properties of Single‐Walled Carbon Nanotubes Filled with an Electron Donor—Rubidium Iodide: Multifrequency Raman and X‐ray Photoelectron Spectroscopy Studies

2019 ◽  
Vol 256 (12) ◽  
pp. 1900209
Author(s):  
Marianna V. Kharlamova ◽  
Christian Kramberger ◽  
Paolo Rudatis ◽  
Kazuhiro Yanagi ◽  
Dominik Eder
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Properties ◽  
Electron Donor ◽  
Photoelectron Spectroscopy ◽  
Single Walled Carbon Nanotubes ◽  
X Ray ◽  
Single Walled Carbon ◽  
Spectroscopy Studies ◽  
Walled Carbon Nanotubes

scholarly journals Synthesis and Cytotoxicity of POSS Modified Single Walled Carbon Nanotubes

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Yuhua Xue ◽  
Hao Chen
Keyword(s):  
Carbon Nanotubes ◽  
Photoelectron Spectroscopy ◽  
Single Walled Carbon Nanotubes ◽  
X Ray ◽  
Single Walled Carbon ◽  
Amine Functionalized ◽  
Low Toxicity ◽  
Organic Solutions ◽  
Oligomeric Silsesquioxane ◽  
Walled Carbon Nanotubes

Single walled carbon nanotubes (SWNTs) decorated with polyhedral oligomeric silsesquioxane (POSS) were synthesized via the amide linkages between the acid treated SWNTs and amine-functionalized POSS. The successful modification of SWNTs with POSS was confirmed by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and UV-Vis spectra. The resulting SWNTs-POSS can be dispersed in both water and organic solutions. The biocompatibility and cytotoxicity of the SWNTs and SWNTs-POSS were evaluated by CCK-8 viability assays, which indicated that SWNTs-POSS exhibit very extremely low toxicity. The low toxicity of the POSS modified SWNTs leads to more opportunities for using carbon nanotubes in biomedical fields.

CHARACTERIZATION OF QUANTUM DOTS, SINGLE WALLED CARBON NANOTUBES AND NICKEL OCTADECYLPHTHALOCYANINE CONJUGATES

2012 ◽  
Vol 11 (02) ◽  
pp. 1250022 ◽  
Author(s):  
SAMSON KHENE ◽  
TEBELLO NYOKONG
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Dots ◽  
Ultra Violet ◽  
Single Walled Carbon Nanotubes ◽  
X Ray ◽  
Single Walled Carbon ◽  
Test Molecule ◽  
Electro Oxidation ◽  
Walled Carbon Nanotubes

In this work nickel octadecylphthalocyanine (NiPc(C10H21)8) and cadmium telluride quantum dots (QDs) capped with thioglycolic acid (TGA) are adsorbed on single walled carbon nanotubes (SWCNT) to form NiPc(C10H21)8 -SWCNT-QDs conjugate. X-ray photoelectron, ultra violet/visible and Raman spectroscopies are used to characterize the conjugate. SWCNT, poly- Ni(O)Pc(C10H21)8 , NiPc(C10H21)8 -SWCNT and NiPc(C10H21)8 -SWCNT-QDs complexes are used to modify glassy carbon electrode (GCE) and used for the electro-oxidation of pentachlorophenol as a test molecule. NiPc(C10H21)8 -SWCNT-QDs electrode gave the best detection current for pentachlorophenol.

The Nucleophilic Addition of In Situ Generated Calcium Thiolate of Benzonitrile to the Sidewall of Single-Walled Carbon Nanotubes: A New and Direct Approach for Thioamidation

2016 ◽  
Vol 69 (2) ◽  
pp. 198 ◽  
Author(s):  
Hossein Reza Darabi ◽  
Atefeh Roozkhosh ◽  
Kioumars Aghapoor
Keyword(s):  
Carbon Nanotubes ◽  
Photoelectron Spectroscopy ◽  
Nucleophilic Addition ◽  
Single Walled Carbon Nanotubes ◽  
Thioacetic Acid ◽  
Covalent Functionalization ◽  
X Ray ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

A new and efficient method for the thioamidation of single-walled carbon nanotubes (SWCNTs) has been introduced by direct addition of an intermediately generated nitrogen-based nucleophile. In this approach, there is a synergistic effect between benzonitrile, CaH2, and thioacetic acid leading to the formation of calcium thiolate which subsequently added to the sidewalls of the tubes. This finding was also confirmed when SWCNTs with benzonitrile moieties on their sidewalls were tested. The successful covalent functionalization of SWCNTs has been proven by thermogravimetric analysis, Raman, IR, and X-ray photoelectron spectroscopy techniques.

Preparation and Characterization of Ternary Composite Composed by Chitosan, Porphyrin Derivative and Single-Walled Carbon Nanotubes (SWCNTs)

2012 ◽  
Vol 535-537 ◽  
pp. 1591-1596
Author(s):  
Cheng Hong Huang ◽  
Chang Jun Hou ◽  
Juan Li ◽  
Hui Qi ◽  
Sheng Fang Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Photoelectron Spectroscopy ◽  
Single Walled Carbon Nanotubes ◽  
Raman Shift ◽  
Ternary Composite ◽  
Quenching Effect ◽  
Single Walled Carbon ◽  
Ft Ir ◽  
Walled Carbon Nanotubes

The functionalization of single-walled carbon nanotubes (SWCNTs) by noncovalent approach turned to be an effect strategy. Porphyrin and its derivatives are ideal materials for the decoration of SWCNTs. In this work, 5-(4-carboxypheny1)-10,15,20-triphenylporphyrin (H2CPTPP) was synthesized and covalently combined to the chitosan. The prepared chitosan/H2CPTPP composite was further conjugated with the oxidized SWCNTs to form chitosan/H2CPTPP/SWCNTs ternary composite. The results indicated that the carboxyl group of H2CPTPP was successfully introduced into the chitosan, which was confirmed by Fourier Transform infrared (FT/IR) spectroscopy, Raman shift and X-ray photoelectron spectroscopy (XPS). The solution of chitosan/ H2CPTPP/SWCNTs composite displays fluorescence quenching effect compared with that of chitosan/H2CPTPP composite at 615 nm and 654 nm upon excitation at 425nm.

Sign in / Sign up

Export Citation Format

Share Document