[23p-E303-1~15] 3.12 Nanoscale optical science and near-field optics

[23p-E303-13] History-dependence of nano-photoisomerization in photochromic single crystals

〇Yuji Arakawa¹, Kazuharu Uchiyama¹, Kingo Uchida², Yuki Hashimoto², Makoto Naruse³, Hirokazu Hori¹ (1.Yamanashi Univ., 2.Ryukoku Univ., 3.The Univ. of Tokyo)

Keywords:Photochromism

We have focused on nano-photoisomerization in single crystals of photochromic diarylethene molecules, which exhibit reversible isomerization upon light irradiation.In this study, we investigated the elimination and re-formation of nano-sized photoisomerization pathways formed by local excitation on the surface of a single crystal in a colored state. We found that the pathway is partially erased by recoloring, compared to the case where the same pathway is measured continuously and once the crystal is recolored.