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Noncovalent Attachment of PbS Quantum Dots to Single-and Multiwalled Carbon Nanotubes
| Content Provider | Semantic Scholar |
|---|---|
| Author | Das, Anirban Hall, Elizabeth Wai, C. K. |
| Copyright Year | 2015 |
| Abstract | Attachment of PbS quantum dots (QD) to single-walled carbon nanotubes (SWNT) andmultiwalled 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 singleor 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-BDMTon the functionalizedCNT replaces oleic acid on the surface of theQD 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. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://downloads.hindawi.com/journals/jnt/2014/285857.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
