Abstract
Functional nanowires with photochromic spiropyran (SP) species are prepared by reversible addition–fragmentation transfer (RAFT) dispersion polymerization of styrene using poly(4-vinylpyridine-co-spiropyranyl methacrylate) as a macro-RAFT agent, and then electrospinning technology is used to fabricate fibers from the functional nanowires. The photoisomerization of SP in the nanowires and fibers is studied, and reversible photochromism for both nanowires and fibers is observed. Since the merocyanine (ME form) of the SP emits fluorescence and the SP form is non-fluorescent, the fluorescence of the nanowires and the fibers can be switched on and off upon alternating UV and visible-light irradiation.
Published Version
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