出版社：The Society of Photographic Science and Technolgy of Japan
摘要：The copolymer composed of (ω-methoxy) oligo (oxyethylene) methacrylate and spiropyran methacrylate has been prepared. Spiropyran group showed reversible isomerization in this polymer film upon photoirradiation. The ionic conductivity in this film doped with LiClO4 gradually decreased upon UV irradiation and subsequently increased upon Vis irradiation. Reversible change of ionic conductivity by photoirradiation is in good correlation with the change in absorbance assignable to photomerocyanine-form (PMC-form). This change is revealed to be attributed to the aggregation between dyes (PMC-form and/or spiro-form). The glass transition temperature (Tg) for this film increased by UV irradiation. This behavior indicates that the aggregation between dyes acts as quasi-crosslinking point in solid matrix. The progress of this aggregation brought about the change in ionic mobility. Thus, the ionic conductivity can becontrolled by photoirradiation in the solid polymer electrolyte.
