Cyclodextrins stabilize TOPO-(CdSe)ZnS quantum dots in water

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

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 languageEnglish
Title of host publicationMaterials Research Society Symposium - Proceedings
EditorsJ. Aizenberg, W.J. Landis, C. Orme, R. Wang
Pages9-13
Number of pages5
Volume823
Publication statusPublished - 2004
EventBiological and Bioinspired Materials and Devices - San Francisco, CA, United States
Duration: Apr 13 2004Apr 16 2004

Other

OtherBiological and Bioinspired Materials and Devices
CountryUnited States
CitySan Francisco, CA
Period4/13/044/16/04

Fingerprint

Cyclodextrins
Semiconductor quantum dots
Water
Hydroxyl Radical
Photoluminescence
Molecules
trioctyl phosphine oxide
Hexanes
Hexane
Density functional theory
Crystals

Keywords

  • Cyclodextrin-quantum dots
  • Cyclodextrins
  • Quantum dots
  • Water-soluble

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Feng, J., Kim, Y. H., Zhang, S. B., Ding, S. Y., Tucker, M. P., Rumbles, G., & Himmel, M. E. (2004). Cyclodextrins stabilize TOPO-(CdSe)ZnS quantum dots in water. In J. Aizenberg, W. J. Landis, C. Orme, & R. Wang (Eds.), Materials Research Society Symposium - Proceedings (Vol. 823, pp. 9-13)

Cyclodextrins stabilize TOPO-(CdSe)ZnS quantum dots in water. / Feng, Jun; Kim, Yong Hyun; Zhang, S. B.; Ding, Shi You; Tucker, Melvin P.; Rumbles, Gary; Himmel, Michael E.

Materials Research Society Symposium - Proceedings. ed. / J. Aizenberg; W.J. Landis; C. Orme; R. Wang. Vol. 823 2004. p. 9-13.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Feng, J, Kim, YH, Zhang, SB, Ding, SY, Tucker, MP, Rumbles, G & Himmel, ME 2004, Cyclodextrins stabilize TOPO-(CdSe)ZnS quantum dots in water. in J Aizenberg, WJ Landis, C Orme & R Wang (eds), Materials Research Society Symposium - Proceedings. vol. 823, pp. 9-13, Biological and Bioinspired Materials and Devices, San Francisco, CA, United States, 4/13/04.
Feng J, Kim YH, Zhang SB, Ding SY, Tucker MP, Rumbles G et al. Cyclodextrins stabilize TOPO-(CdSe)ZnS quantum dots in water. In Aizenberg J, Landis WJ, Orme C, Wang R, editors, Materials Research Society Symposium - Proceedings. Vol. 823. 2004. p. 9-13
Feng, Jun ; Kim, Yong Hyun ; Zhang, S. B. ; Ding, Shi You ; Tucker, Melvin P. ; Rumbles, Gary ; Himmel, Michael E. / Cyclodextrins stabilize TOPO-(CdSe)ZnS quantum dots in water. Materials Research Society Symposium - Proceedings. editor / J. Aizenberg ; W.J. Landis ; C. Orme ; R. Wang. Vol. 823 2004. pp. 9-13
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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.

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