期刊
RSC ADVANCES
卷 11, 期 3, 页码 1517-1523出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ra08539a
关键词
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资金
- Samsung Research Funding & Incubation Center for Future Technology [SRFC-TA1703-05]
- National Research Foundation of Korea (NRF) - Korean government (MEST) [NRF-2015R1D1A1A01060256]
The highly fluorinated alternating polymer P(R(F)Mi-St exhibits improved thermal properties and patterning capabilities under high energy radiation, making it suitable for creating mechanically non-deteriorated negative-tone images down to 50 nm.
A highly fluorinated alternating polymer, P(R(F)Mi-St), possessing improved thermal properties and patterning capabilities over perfluoroalkyl polymethacrylates under high energy radiation was achieved with semi-perfluorododecyl maleimide (R(F)Mi) and styrene (St). R(F)Mi could be synthesised efficiently via a Mitsunobu reaction condition and copolymerised with St by free radical and reversible-deactivation radical polymerisation protocols. P(R(F)Mi-St) showed a satisfactory glass-transition temperature (108 degrees C) and intermolecular cross-linking behaviour under electron-beam and commercially more important extreme UV (lambda = 13.5 nm) irradiation. The exposed regions lost their solubility, resulting in the successful formation of mechanically non-deteriorated negative-tone images down to 50 nm. In addition, P(R(F)Mi-St) could be solution-processed with chemically non-damaging fluorous liquids, which enabled the polymer to be applied effectively on top of an organic semiconductor layer as a dielectric material (dielectric constant 2.7) for the organic field-effect transistor fabrication.
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