title: Preparation of a polymer surface coated with a gradient of quantum dots.
abstract: In the present study, we generated a polyethylene surface coated with a gradient of quantum dots for use in imaging experiments. The polyethylene surface was first treated with increasing coronal discharge along its length. Next, the surface was reacted with branched polyethyleneimine followed by biotin to produce a polyethylene surface with a gradient of biotin. Finally, the biotin-coated surface was reacted with streptavidin-coated quantum dots. Fluorescent imaging showed that the fluorescence intensity from the quantum dots gradually increased along its length. Such quantum-dot-modified gradient polyethylene surfaces may be useful in biomedical analyses.
authors.affiliation: Fusion Biotechnology Research Center, Korea Research Institute of Chemical Technology, PO Box 107, Yuseong, Daejeon 305-600, Korea.
authors.forename: Byung Soo
authors.initials: BS
authors.lastname: Kim
authors.forename: Soo Young
authors.initials: SY
authors.lastname: Lee
authors.forename: Young Ho
authors.initials: YH
authors.lastname: Cho
authors.forename: Ju Yong
authors.initials: JY
authors.lastname: Youn
authors.forename: Moon Suk
authors.initials: MS
authors.lastname: Kim
authors.forename: Gilson
authors.initials: G
authors.lastname: Khang
authors.forename: Hai Bang
authors.initials: HB
authors.lastname: Lee