Cyclodextrins Stabilize TOPO-(CdSe)ZnS Quantum Dots in Water

Jun Feng; Yong Hyun Kim; S. B. Zhang; Shi You Ding; Melvin P. Tucker; Garry Rumbles; Michael E. Himmel

doi:10.1557/proc-823-w4.5

Cyclodextrins Stabilize TOPO-(CdSe)ZnS Quantum Dots in Water

Jun Feng, Yong Hyun Kim, S. B. Zhang, Shi You Ding, Melvin P. Tucker, Garry Rumbles, Michael E. Himmel

National Renewable Energy Laboratory

Research output: Contribution to conference › Paper › peer-review

Abstract

Chemical action between cyclodextrins (CDs) and TOPO-(CdSe)ZnS quantum dots (QDs) generates a water-soluble solution of CD-QDs. Hydrophobic TOPO molecules on surface of the QDs are compatible to thread through the pockets of CDs and make the hydroxyl group on end of CDs to approach the ZnS surface, and then cause the interaction between ZnS and the hydroxyls. In this paper, Photoluminescence of the γ-CD-QD solution appeared about 15 nm of red movement compared with that of the QDs in hexane; 58% replacement of the crystal coordinate bond of Zn-S with that of Zn-O in the ZnS shell was demonstrated by using first-principles density functional theory and the red shift of the photoluminescence of CD-QDs; and -0.11eV of the energy gain of the exchange model was calculated by using an effective mass (EM) model. CD-QDs will provide water-soluble QDs with conjugational group for biology and molecule-device applications.

Original language	American English
Pages	9-13
Number of pages	5
DOIs	https://doi.org/10.1557/proc-823-w4.5
State	Published - 2004
Event	Biological and Bioinspired Materials and Devices - San Francisco, CA, United States Duration: 13 Apr 2004 → 16 Apr 2004

Conference

Conference	Biological and Bioinspired Materials and Devices
Country/Territory	United States
City	San Francisco, CA
Period	13/04/04 → 16/04/04

NREL Publication Number

NREL/CP-510-37473

Keywords

Cyclodextrin-quantum dots
Cyclodextrins
Quantum dots
Water-soluble

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10.1557/proc-823-w4.5

Cite this

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title = "Cyclodextrins Stabilize TOPO-(CdSe)ZnS Quantum Dots in Water",

abstract = "Chemical action between cyclodextrins (CDs) and TOPO-(CdSe)ZnS quantum dots (QDs) generates a water-soluble solution of CD-QDs. Hydrophobic TOPO molecules on surface of the QDs are compatible to thread through the pockets of CDs and make the hydroxyl group on end of CDs to approach the ZnS surface, and then cause the interaction between ZnS and the hydroxyls. In this paper, Photoluminescence of the γ-CD-QD solution appeared about 15 nm of red movement compared with that of the QDs in hexane; 58% replacement of the crystal coordinate bond of Zn-S with that of Zn-O in the ZnS shell was demonstrated by using first-principles density functional theory and the red shift of the photoluminescence of CD-QDs; and -0.11eV of the energy gain of the exchange model was calculated by using an effective mass (EM) model. CD-QDs will provide water-soluble QDs with conjugational group for biology and molecule-device applications.",

keywords = "Cyclodextrin-quantum dots, Cyclodextrins, Quantum dots, Water-soluble",

author = "Jun Feng and Kim, {Yong Hyun} and Zhang, {S. B.} and Ding, {Shi You} and Tucker, {Melvin P.} and Garry Rumbles and Himmel, {Michael E.}",

year = "2004",

doi = "10.1557/proc-823-w4.5",

language = "American English",

pages = "9--13",

note = "Biological and Bioinspired Materials and Devices ; Conference date: 13-04-2004 Through 16-04-2004",

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T1 - Cyclodextrins Stabilize TOPO-(CdSe)ZnS Quantum Dots in Water

AU - Feng, Jun

AU - Kim, Yong Hyun

AU - Zhang, S. B.

AU - Ding, Shi You

AU - Tucker, Melvin P.

AU - Rumbles, Garry

AU - Himmel, Michael E.

PY - 2004

Y1 - 2004

N2 - Chemical action between cyclodextrins (CDs) and TOPO-(CdSe)ZnS quantum dots (QDs) generates a water-soluble solution of CD-QDs. Hydrophobic TOPO molecules on surface of the QDs are compatible to thread through the pockets of CDs and make the hydroxyl group on end of CDs to approach the ZnS surface, and then cause the interaction between ZnS and the hydroxyls. In this paper, Photoluminescence of the γ-CD-QD solution appeared about 15 nm of red movement compared with that of the QDs in hexane; 58% replacement of the crystal coordinate bond of Zn-S with that of Zn-O in the ZnS shell was demonstrated by using first-principles density functional theory and the red shift of the photoluminescence of CD-QDs; and -0.11eV of the energy gain of the exchange model was calculated by using an effective mass (EM) model. CD-QDs will provide water-soluble QDs with conjugational group for biology and molecule-device applications.

AB - Chemical action between cyclodextrins (CDs) and TOPO-(CdSe)ZnS quantum dots (QDs) generates a water-soluble solution of CD-QDs. Hydrophobic TOPO molecules on surface of the QDs are compatible to thread through the pockets of CDs and make the hydroxyl group on end of CDs to approach the ZnS surface, and then cause the interaction between ZnS and the hydroxyls. In this paper, Photoluminescence of the γ-CD-QD solution appeared about 15 nm of red movement compared with that of the QDs in hexane; 58% replacement of the crystal coordinate bond of Zn-S with that of Zn-O in the ZnS shell was demonstrated by using first-principles density functional theory and the red shift of the photoluminescence of CD-QDs; and -0.11eV of the energy gain of the exchange model was calculated by using an effective mass (EM) model. CD-QDs will provide water-soluble QDs with conjugational group for biology and molecule-device applications.

KW - Cyclodextrin-quantum dots

KW - Cyclodextrins

KW - Quantum dots

KW - Water-soluble

UR - http://www.scopus.com/inward/record.url?scp=5544269334&partnerID=8YFLogxK

U2 - 10.1557/proc-823-w4.5

DO - 10.1557/proc-823-w4.5

M3 - Paper

AN - SCOPUS:5544269334

SP - 9

EP - 13

T2 - Biological and Bioinspired Materials and Devices

Y2 - 13 April 2004 through 16 April 2004

ER -

Cyclodextrins Stabilize TOPO-(CdSe)ZnS Quantum Dots in Water

Abstract

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NREL Publication Number

Keywords

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