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Micro-Contact Printing of Polydiacetylene Liposomes Using Hydrophilic Stamps

Title
Micro-Contact Printing of Polydiacetylene Liposomes Using Hydrophilic Stamps
Author
안희준
Keywords
Agarose; Micro-Contact Printing; Polydiacetylene; Polydimethylsiloxane
Issue Date
2011-07
Publisher
AMER SCIENTIFIC PUBLISHERS, 26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USA
Citation
Journal of nanoscience and nanotechnology,Vol.11 No.7 [2011],6034-6038
Abstract
Micron-sized polydiacetylene (PDA) liposome patterns have been fabricated on titanium (Ti) substrates using a micro-contact printing (mu-CP) technique. Two types of stamps (PDMS and agarose) and inking methods ("soaking" and "dropping") are used for mu-CP, and we compare their effect on the morphology of the PDA patterns. The size and morphology of the patterned PDA liposomes are analysized by optical and fluorescence microscopies and atomic force microscopy (AFM). When the agarose stamp is inked by the "dropping" method, PDA patterns are most efficiently transferred to the Ti substrate. However, the thickness of the transferred PDA patterns is not homogeneous, with the edge of the transferred pattern being thicker than its center. In contrast, when the PDMS stamp is used for mu-CP, the center of the pattern is thicker than the edge. Red fluorescence patterns are readily obtained by heat treatment of the PDA-immobilized solid substrate. The intensity of the fluorescence of the samples is consistent with the results of optical microscopy and AFM experiments.
URI
http://www.scopus.com/record/display.uri?eid=2-s2.0-84855414766&origin=inward&txGid=1fe63c327022daa33bd1b954113eab16http://www.ingentaconnect.com/content/asp/jnn/2011/00000011/00000007/art00078
ISSN
1533-4880
DOI
10.1166/jnn.2011.4362
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ORGANIC AND NANO ENGINEERING(유기나노공학과) > Articles
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