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Fabrication of Patterned Polydiacetylene Composite Films Using a Replica‐Molding (REM) Technique
Author(s) -
Yarimaga Oktay,
Lee Sumi,
Kim JongMan,
Choi YangKyu
Publication year - 2010
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200900662
Subject(s) - diacetylene , materials science , polymerization , polymer , replica , fabrication , composite number , molding (decorative) , prism , thermochromism , evaporation , fluorescence , photopolymer , curing (chemistry) , polymer chemistry , composite material , chemical engineering , nanotechnology , optics , chemistry , organic chemistry , medicine , art , visual arts , thermodynamics , engineering , alternative medicine , physics , pathology
Functional three‐dimensional (3D) micropatterns of diacetylene supramolecules embedded in a host polymer have been successfully fabricated by a replica‐molding (REM) technique. Dimensional reduction as a result of liquid evaporation during the curing process does not affect the conformational features of the transferred patterns. Polymerization of the diacetylene vesicles using 254 nm UV‐light irradiation from the back‐side of the transparent substrate induces blue colored polydiacetylene (PDA) micro‐images. Interestingly, the polymerization selectively occurs in the molded areas because of the sub‐300 nm light blocking property of SU‐8. 3D fluorescence patterns are readily obtained by heat treatment of the blue images on the film.