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Noncovalent Attachment of PbS Quantum Dots to Single- and Multiwalled Carbon Nanotubes
| Content Provider | Hindawi |
|---|---|
| Author | Das, Anirban Hall, Eric Wai, Chien M. |
| Editor | Sumpter, Bobby G. |
| Copyright Year | 2014 |
| Abstract | 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 by π-π stacking 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. |
| Page Count | 7 |
| File Format | |
| ISSN | 16879503 |
| DOI | 10.1155/2014/285857 |
| Journal | Journal of Nanotechnology |
| Volume Number | 2014 |
| e-ISSN | 16879511 |
| Language | English |
| Publisher | Hindawi Publishing Corporation |
| Publisher Date | 2014-03-10 |
| Access Restriction | Open |
| Rights License | This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Content Type | Text |
| Resource Type | Article |
| Subject | Materials Science |
