Covalent Coupling of Quantum Dots to Multiwalled Carbon Nanotubes for Electronic Device Applications

Nano Letters ◽  
2003 ◽  
Vol 3 (4) ◽  
pp. 447-453 ◽  
Author(s):  
Sathyajith Ravindran ◽  
Sumit Chaudhary ◽  
Brooke Colburn ◽  
Mihrimah Ozkan ◽  
Cengiz S. Ozkan
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Dots ◽  
Multiwalled Carbon Nanotubes ◽  
Electronic Device ◽  
Multiwalled Carbon ◽  
Covalent Coupling ◽  
Device Applications

scholarly journals Noncovalent Attachment of PbS Quantum Dots to Single- and Multiwalled Carbon Nanotubes

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Anirban Das ◽  
Eric Hall ◽  
Chien M. Wai
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Dots ◽  
Oleic Acid ◽  
Multiwalled Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Stacking Interactions ◽  
Multiwalled Carbon ◽  
Nir Fluorescence ◽  
Walled Carbon Nanotubes ◽  
Pbs Quantum Dots

Attachment of PbS quantum dots (QD) to single-walled carbon nanotubes (SWNT) and multiwalled carbon nanotubes (MWCNT) is described; wherein commercially obtained PbS-QD of size 2.7 nm, stabilized by oleic acid, are added to a suspension of single- or multiwalled carbon nanotubes (CNT) prefunctionalized noncovalently with 1,2-benzenedimethanethiol (1,2-BDMT) in ethanol. The aromatic part of 1,2-BDMT attaches to the CNT byπ-πstacking interactions, noncovalently functionalizing the CNT. The thiol part of the 1,2-BDMT on the functionalized CNT replaces oleic acid on the surface of the QD facilitating the noncovalent attachment of the QD to the CNT. The composites were characterized by TEM and FTIR spectroscopy. Quenching of NIR fluorescence of the PbS-QD on attachment to the carbon nanotubes (CNT) was observed, indicating FRET from the QD to the CNT.

Covalent Coupling of Gold Nanoparticles to Multiwalled Carbon Nanotubes for Electronic Device Applications

2004 ◽  
Vol 818 ◽  
Author(s):  
Xicheng Ma ◽  
Ning Lun ◽  
Xia Li ◽  
Shulin Wen
Keyword(s):  
Carbon Nanotubes ◽  
Gold Nanoparticles ◽  
Multiwalled Carbon Nanotubes ◽  
Electroless Plating ◽  
Electronic Device ◽  
Hybrid Nanostructures ◽  
Gold Deposition ◽  
Multiwalled Carbon ◽  
Plating Bath ◽  
Conjugation Process

AbstractCreating hybrid nanostructures of disparate nanoscale blocks is of interest of exploring new types of electronic devices and networks. Here, we demonstrate the novel coupling of gold nanoparticles of 3-4 nm diameters to sidewall of multiwalled carbon nanotubes (MWNTs) using the electroless plating technique. MWNTs were initially chemically modified with an H2SO4-HNO3 acid treatment, and subsequently activated with Pd-Sn catalytic nuclei via a one-step activation approach. When the activated MWNTs were immersed in a gold-containing electroless plating bath, gold deposition occurred at the catalytic sites. The deposited gold clusters then catalyze further gold deposition on the tube surface (autocatalytic process). Novel hybrid nanostructures with gold nanoparticles homogeneously distributed on MWNTs resulted. High-resolution transmission electron microscopy (HRTEM) and energy dispersive X-ray spectroscopy (EDS) were used to characterize the conjugation process.

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