486
T. Ube and T. Ikeda
We developed LC elastomers containing exchangeable links and photochromic
moieties (LCE-1, Fig. 28.5a) capable of network rearrangement through transesterication (Fig. 28.5b) [40]. Ester and hydroxy groups were introduced to polysiloxanes through hydrosilylation reaction between poly(hydrogenmethylsiloxane) and
vinyl compounds. LCE-1 was fusible and reshapable under heating at LC phase
(Fig. 28.5c), in contrast with CLCPs without dynamic covalent bonds.
Fig. 28.5 (a) Chemical structure of LCE-1. (b) Schematic illustration of the rearrangement
of network structure through transesterification. (c) Fusion test of LCE1. Scale bars: 5 mm.
(Reproduced from [40])
T. Ube and T. Ikeda
We developed LC elastomers containing exchangeable links and photochromic
moieties (LCE-1, Fig. 28.5a) capable of network rearrangement through transesterication (Fig. 28.5b) [40]. Ester and hydroxy groups were introduced to polysiloxanes through hydrosilylation reaction between poly(hydrogenmethylsiloxane) and
vinyl compounds. LCE-1 was fusible and reshapable under heating at LC phase
(Fig. 28.5c), in contrast with CLCPs without dynamic covalent bonds.
Fig. 28.5 (a) Chemical structure of LCE-1. (b) Schematic illustration of the rearrangement
of network structure through transesterification. (c) Fusion test of LCE1. Scale bars: 5 mm.
(Reproduced from [40])