| 초록 |
Poly(styrene-block-4-vinylpyridine) (PS-b-4PVP) with Mw of 58,000 and PS/4PVP ratio of 4was prepared using anionic polymerization. The prepared PS-b-4PVP showed microphase-separated nano-structures of cylinders after casting films. The cylindrical nano-structures were used to construct 3-dimensionally ordered ionic nanochannels for the transport of protons by simply attaching sulfonate groups to the pyridine units in PS-b-4PVP. The resulting films show highly asymmetric conductivity (0.015 S/cm to the vertical direction and no conductivity to the lateral direction) under 45 % relative humidity.
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