Optical sensitivity of mussel protein-coated double-walled carbon nanotubes on the iron–DOPA conjugation bond

RSC Advances ◽  
2016 ◽  
Vol 6 (20) ◽  
pp. 16308-16313 ◽  
Author(s):  
Yong-Il Ko ◽  
Cheon-Soo Kang ◽  
Eun-Ae Shin ◽  
Yong Chae Jung ◽  
Hiroyuki Muramatsu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Optical Properties ◽  
Optical Sensitivity ◽  
External Conditions ◽  
Double Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

The optical properties of semiconducting carbon nanotubes respond sensitively to external conditions.

scholarly journals Optical Properties of Composites Based on Poly (o-phenylenediamine), Poly (Vinylenefluoride) and Double-Wall Carbon Nanotubes

2021 ◽  
Vol 22 (15) ◽  
pp. 8260
Author(s):  
Mihaela Baibarac ◽  
Monica Daescu ◽  
Elena Matei ◽  
Daniela Nastac ◽  
Oana Cramariuc
Keyword(s):  
Carbon Nanotubes ◽  
Optical Properties ◽  
Vinylidene Fluoride ◽  
Polymerization Reaction ◽  
Covalent Functionalization ◽  
Quenching Process ◽  
Poly Vinylidene Fluoride ◽  
Double Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Pl Quenching

In this work, synthesis and optical properties of a new composite based on poly(o-phenylenediamine) (POPD) fiber like structures, poly(vinylidene fluoride) (PVDF) spheres and double-walled carbon nanotubes (DWNTs) are reported. As increasing the PVDF weight in the mixture of the chemical polymerization reaction of o-phenylenediamine, the presence of the PVDF spheres onto the POPD fibers surface is highlighted by scanning electron microscopy (SEM). The down-shift of the Raman line from 1421 cm−1 to 1415 cm−1 proves the covalent functionalization of DWNTs with the POPD-PVDF blends. The changes in the absorbance of the IR bands peaked around 840, 881, 1240 and 1402 cm−1 indicate hindrance steric effects induced of DWNTs to the POPD fiber like structures and the PVDF spheres, as a consequence of the functionalization process of carbon nanotubes with macromolecular compounds. The presence of the PVDF spheres onto the POPD fiber like structures surface induces a POPD photoluminescence (PL) quenching process. An additional PL quenching process of the POPD-PVDF blends is reported to be induced in the presence of DWNTs. The studies of anisotropic PL highlight a change of the angle of the binding of the PVDF spheres onto the POPD fiber like structures surface from 50.2° to 38° when the carbon nanotubes concentration increases in the POPD-PVDF/DWNTs composites mass up to 2 wt.%.

Double-walled carbon nanotubes synthesized using carbon black as the dot carbon source

2006 ◽  
Vol 17 (13) ◽  
pp. 3100-3104 ◽  
Author(s):  
Zhi-Gang Chen ◽  
Feng Li ◽  
Wen-Cai Ren ◽  
Hongtao Cong ◽  
Chang Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Source ◽  
Carbon Black ◽  
Double Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes
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