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    Combined soft lithographic transfer-printing and patterning method of highly fluorinated polymers as a facile surface treatment protocol

    Year: 2017

    Journal: J. Appl. Polym. Sci., Volume 134, AUG 20

    Authors: Lee, Da-Hyeok; Jung, Seok-Heon; Kwon, O. Jun; Kim, Myoung-Soo; Park, Jin-Seok; Lee, Eunhye; Jung, Byung Jun; Beom-Hoan, O.; Park, Se-Geun; Lee, Jin-Kyun

    Organizations: National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2013R1A1A2005260, NRF-2015R1D1A1A01060256]; MOTIE (Ministry of Trade, Industry Energy) [10051650]; KDRC (Korea Display Research Corporation)

    Keywords: coatings; fluorinated polymers; molding; optical and photovoltaic applications; organic light-emitting devices (OLED)

    A combined soft lithographic transfer-printing and patterning method of highly fluorinated polymers was investigated aiming to establish a facile surface treatment protocol for various substrates. Spin-coated layers of poly(1H, 1H, 2H, 2H-perfluorodecyl methacrylate) (PFDMA) on patterned polydimethylsiloxane (PDMS) molds were transfer-printed successfully on silicon, glass, aluminum substrates, resulting in the well-controlled production of nano to micrometer-scale periodic structures. With careful optimization of the dimension and density of the PFDMA patterns, it was possible to achieve a water contact angle as high as 1758 on the transfer-printed highly fluorinated polymer film. One of the advantages of the transfer-patterning method is that highly fluorinated polymer films can be printed on curved surfaces while retaining their superhydrophobic and corrosion-prevention character. In addition, the transfer-printed PFDMA layers on the glass plates showed enhanced light transmission, which led to the extraction of 10% more light when they were applied to the emitting side of green organic light-emitting devices. The micro-patterned PFDMA surfaces also exhibited a significantly reduced level of bacterial adhesion when they were incubated in human bile juice. These results strongly suggest that the proposed facile transfer-patterning protocol of highly fluorinated polymer films can be a suitable surface-treatment technique for implantable electronic devices that exhibit improved device performance and anti-biofouling nature. (C) 2017 Wiley Periodicals, Inc. J.
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