Immobilization of Quantum Dots in the Photo-Cross-Linked Poly(ethylene glycol)-Based Hydrogel

Kerim M. Gattás-Asfura; Yujun Zheng; Miodrag Micic; Michael J. Snedaker; Xiaojun Ji; Guodong Sui; Jhony Orbulescu; Fotios M. Andreopoulos; Si M. Pham; Chongmin Wang; Roger M. Leblanc

doi:10.1021/jp035800l

Immobilization of Quantum Dots in the Photo-Cross-Linked Poly(ethylene glycol)-Based Hydrogel

Kerim M. Gattás-Asfura, Yujun Zheng, Miodrag Micic, Michael J. Snedaker, Xiaojun Ji, Guodong Sui, Jhony Orbulescu, Fotios M. Andreopoulos, Si M. Pham, Chongmin Wang, Roger M. Leblanc

Research output: Contribution to journal › Article › peer-review

43 Scopus citations

Abstract

An inorganic/organic composite hybrid nano-system has been successfully synthesized in which nanocrystalline quantum dots (QDs) were effectively immobilized within a photo-cross-linked polyethylene glycol) (PEG) hydrogel. The immobilization of 3.5-6.0 nm CdTe and 2.0-3.5 nm CdSe QDs within the PEG hydrogel network has been shown to be effective through utilization of physical trapping. These QD-immobilized gel systems demonstrated luminescence characteristics unique to semiconductor QD nanocrystals. Controlled particle extraction from the PEG hydrogel matrix may be possible via a photocleavage process. The solubility property of QDs was controlled through surface functionalization. It is envisioned that the unique photophysical properties of this new material can be utilized as a convenient signal transducer for chemo-/bio-sensing. A promising application of the described QD/PEG-NC hybrid system may be in the fields of fluoroimmunoassay and as a monitoring system for drug delivery and wound healing.

Original language	English (US)
Pages (from-to)	10464-10469
Number of pages	6
Journal	Journal of Physical Chemistry B
Volume	107
Issue number	38
DOIs	https://doi.org/10.1021/jp035800l
State	Published - Sep 25 2003

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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Immobilization of Quantum Dots in the Photo-Cross-Linked Poly(ethylene glycol)-Based Hydrogel. / Gattás-Asfura, Kerim M.; Zheng, Yujun; Micic, Miodrag; Snedaker, Michael J.; Ji, Xiaojun; Sui, Guodong; Orbulescu, Jhony; Andreopoulos, Fotios M.; Pham, Si M.; Wang, Chongmin; Leblanc, Roger M.

In: Journal of Physical Chemistry B, Vol. 107, No. 38, 25.09.2003, p. 10464-10469.

Research output: Contribution to journal › Article › peer-review

Gattás-Asfura, Kerim M. ; Zheng, Yujun ; Micic, Miodrag ; Snedaker, Michael J. ; Ji, Xiaojun ; Sui, Guodong ; Orbulescu, Jhony ; Andreopoulos, Fotios M. ; Pham, Si M. ; Wang, Chongmin ; Leblanc, Roger M. / Immobilization of Quantum Dots in the Photo-Cross-Linked Poly(ethylene glycol)-Based Hydrogel. In: Journal of Physical Chemistry B. 2003 ; Vol. 107, No. 38. pp. 10464-10469.

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abstract = "An inorganic/organic composite hybrid nano-system has been successfully synthesized in which nanocrystalline quantum dots (QDs) were effectively immobilized within a photo-cross-linked polyethylene glycol) (PEG) hydrogel. The immobilization of 3.5-6.0 nm CdTe and 2.0-3.5 nm CdSe QDs within the PEG hydrogel network has been shown to be effective through utilization of physical trapping. These QD-immobilized gel systems demonstrated luminescence characteristics unique to semiconductor QD nanocrystals. Controlled particle extraction from the PEG hydrogel matrix may be possible via a photocleavage process. The solubility property of QDs was controlled through surface functionalization. It is envisioned that the unique photophysical properties of this new material can be utilized as a convenient signal transducer for chemo-/bio-sensing. A promising application of the described QD/PEG-NC hybrid system may be in the fields of fluoroimmunoassay and as a monitoring system for drug delivery and wound healing.",

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