Abstract
We report investigations of the binding of amino acids to the surface of colloidal quantum dots that comprise a cadmium selenide core, with a zinc sulfide shell, (CdSe)ZnS. The goal of this work is to replace the TOP/TOPO capping group, created during synthesis, with amino acids that can confer solubility of the quantum dot in a buffered aqueous environment, while retaining or improving the good electronic properties of the quantum dot Steady-state and time-resolved photoluminescence studies, combined with quantum chemical calculations are used to explain the relative efficiency of three amino acids (histidine, lysine and cysteine) to bind and passivate the quantum dot surface as a function of pH. These results are compared to the more common mercaptopropionic acid that is often used to solubilize these QDs in water.
| Original language | English |
|---|---|
| Title of host publication | Proceedings - Electrochemical Society |
| Pages | 340-349 |
| Number of pages | 10 |
| Volume | PV 2004-22 |
| Publication status | Published - 2006 |
| Event | 205th Electrochemical Society Meeting - San Antonio, TX, United States Duration: May 9 2004 → May 14 2004 |
Other
| Other | 205th Electrochemical Society Meeting |
|---|---|
| Country | United States |
| City | San Antonio, TX |
| Period | 5/9/04 → 5/14/04 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Stabilization of (CdSe)ZnS quantum dots in water using amino acid capping groups. / Jones, M.; Ding, S. Y.; Tucker, M. P.; Kim, Y. H.; Zhang, S. B.; Himmel, M. E.; Rumbles, Gary.
Proceedings - Electrochemical Society. Vol. PV 2004-22 2006. p. 340-349.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Stabilization of (CdSe)ZnS quantum dots in water using amino acid capping groups
AU - Jones, M.
AU - Ding, S. Y.
AU - Tucker, M. P.
AU - Kim, Y. H.
AU - Zhang, S. B.
AU - Himmel, M. E.
AU - Rumbles, Gary
PY - 2006
Y1 - 2006
N2 - We report investigations of the binding of amino acids to the surface of colloidal quantum dots that comprise a cadmium selenide core, with a zinc sulfide shell, (CdSe)ZnS. The goal of this work is to replace the TOP/TOPO capping group, created during synthesis, with amino acids that can confer solubility of the quantum dot in a buffered aqueous environment, while retaining or improving the good electronic properties of the quantum dot Steady-state and time-resolved photoluminescence studies, combined with quantum chemical calculations are used to explain the relative efficiency of three amino acids (histidine, lysine and cysteine) to bind and passivate the quantum dot surface as a function of pH. These results are compared to the more common mercaptopropionic acid that is often used to solubilize these QDs in water.
AB - We report investigations of the binding of amino acids to the surface of colloidal quantum dots that comprise a cadmium selenide core, with a zinc sulfide shell, (CdSe)ZnS. The goal of this work is to replace the TOP/TOPO capping group, created during synthesis, with amino acids that can confer solubility of the quantum dot in a buffered aqueous environment, while retaining or improving the good electronic properties of the quantum dot Steady-state and time-resolved photoluminescence studies, combined with quantum chemical calculations are used to explain the relative efficiency of three amino acids (histidine, lysine and cysteine) to bind and passivate the quantum dot surface as a function of pH. These results are compared to the more common mercaptopropionic acid that is often used to solubilize these QDs in water.
UR - http://www.scopus.com/inward/record.url?scp=33749583545&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33749583545&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33749583545
SN - 1566774357
SN - 9781566774352
VL - PV 2004-22
SP - 340
EP - 349
BT - Proceedings - Electrochemical Society
ER -