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Formation of Various Bicolor Fluorescent Micropatterns on a Single Polymer Film Based on Concurrent Photobleaching and Photobase Generation
Author(s) -
Chae Kyu Ho,
Kim Hak Soo
Publication year - 2015
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.201400694
Subject(s) - photobleaching , fluorescence , materials science , photochemistry , polymer , fluorophore , rhodamine , confocal , fluorescence microscope , absorption (acoustics) , optics , chemistry , physics , composite material
Various bicolored fluorescent micropatterns are fabricated on a single polymer film by concurrent photobleaching and a photobase generation process. A polymer, bearing anthracene and oxime–urethane groups, is dyed with rhodamine B isothiocyanate after irradiation with 310‐nm UV light. The photochemical reaction of the polymer is monitored by UV, IR absorption, and fluorescence emission spectroscopy. Differently colored fluorescent micropatterns are obtained by selectively exciting each dye moiety. Various bicolored fluorescent micropatterns are observed through varying the excitation wavelength and observation wavelength ranges using a confocal microscope. This bicolored fluorescence patterning method will be useful to apply in photonic/electronic devices.