TY - JOUR
T1 - Immobilization of Quantum Dots in the Photo-Cross-Linked Poly(ethylene glycol)-Based Hydrogel
AU - Gattás-Asfura, Kerim M.
AU - Zheng, Yujun
AU - Micic, Miodrag
AU - Snedaker, Michael J.
AU - Ji, Xiaojun
AU - Sui, Guodong
AU - Orbulescu, Jhony
AU - Andreopoulos, Fotios M
AU - Pham, Si M.
AU - Wang, Chongmin
AU - Leblanc, Roger
PY - 2003/9/25
Y1 - 2003/9/25
N2 - 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.
AB - 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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M3 - Article
AN - SCOPUS:0141890845
VL - 107
SP - 10464
EP - 10469
JO - Journal of Physical Chemistry B Materials
JF - Journal of Physical Chemistry B Materials
SN - 1520-6106
IS - 38
ER -