Understanding the excitation wavelength dependent spectral shift and large exciton binding energy of tungsten disulfide quantum dots and its interaction with single-walled carbon nanotubes

2020 ◽  
Vol 561 ◽  
pp. 519-532 ◽  
Author(s):  
Abhilasha Bora ◽  
Larionette P.L. Mawlong ◽  
Ruma Das ◽  
P.K. Giri
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Dots ◽  
Binding Energy ◽  
Single Walled Carbon Nanotubes ◽  
Spectral Shift ◽  
Tungsten Disulfide ◽  
Excitation Wavelength ◽  
Single Walled Carbon ◽  
Large Exciton Binding Energy ◽  
Walled Carbon Nanotubes

Exciton Binding Energy in Semiconducting Single-Walled Carbon Nanotubes

2005 ◽  
Vol 109 (33) ◽  
pp. 15671-15674 ◽  
Author(s):  
Ying-Zhong Ma ◽  
Leonas Valkunas ◽  
Sergei M. Bachilo ◽  
Graham R. Fleming
Keyword(s):  
Carbon Nanotubes ◽  
Binding Energy ◽  
Single Walled Carbon Nanotubes ◽  
Exciton Binding Energy ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

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.

scholarly journals Antimony Selenide Crystals Encapsulated within Single Walled Carbon Nanotubes-A DFT Study

2009 ◽  
Vol 6 (s1) ◽  
pp. S147-S152 ◽  
Author(s):  
Navaratnarajah Kuganathan
Keyword(s):  
Carbon Nanotubes ◽  
Binding Energy ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Single Walled Carbon Nanotubes ◽  
Binding Energies ◽  
Single Walled Carbon ◽  
Transmission Electron ◽  
Antimony Selenide ◽  
Walled Carbon Nanotubes

The structure and binding energies of antimony selenide crystals encapsulated within single-walled carbon nanotubes are studied using density functional theory. Calculations were performed on the simulated Sb2Se3structure encapsulated within single walled nanotube to investigate the perturbations on the Sb2Se3crystal and tube structure and electronic structure and to estimate the binding energy. The calculated structures are in good agreement with the experimental high resolution transmission electron microscopy images of the Sb2Se3@SWNT. The calculated binding energy shows that larger diameter tube could accommodate the Sb2Se3crystals exothermically. Minimal charge transfer is observed between nanotube and the Sb2Se3crystals.

Efficient electrochemical biosensors for ethynylestradiol based on the laccase enzyme supported on single walled carbon nanotubes decorated with nanocrystalline carbon quantum dots

2016 ◽  
Vol 8 (39) ◽  
pp. 7254-7259 ◽  
Author(s):  
T. C. Canevari ◽  
F. H. Cincotto ◽  
M. Nakamura ◽  
S. A. S. Machado ◽  
H. E. Toma
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Dots ◽  
Single Walled Carbon Nanotubes ◽  
Carbon Quantum Dots ◽  
Electrochemical Biosensors ◽  
Hybrid Nanomaterial ◽  
Single Walled Carbon ◽  
Laccase Enzyme ◽  
Walled Carbon Nanotubes

A new hybrid nanomaterial based on single-walled carbon nanotubes incorporating nanocrystalline carbon quantum dots (SWCNT/C-dots) was developed.

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