caa a22 4500 465787487 CHVBK 20180323112013.0 cr unu---uuuuu 170327e19901101xx s 000 0 eng 10.1007/BF00395580 doi (NATIONALLICENCE)springer-10.1007/BF00395580 The photochromism of nitrospiropyran included in γ-cyclodextrin [Elektronische Daten] [Takashi Tamaki, Masako Sakuragi, Kunihiro Ichimura, Koso Aoki, Ikuko Arima] Summary: The inclusion compounds of 1′, 3′, 3′-trimethyl-6-nitrospiro-[2H, 1-benzo-pyran-2, 2′-indoline] (NSP) with γ-cyclodextrin (γ-CD), 2,3,6,0-permethylated γ-CD (γ-MCD), and naphthyl modified γ-CD (γ-NCD) showed normal photochromism in the solid state with high light sensitivity comparable with that of NSP dispersed in polymer matrices. This is in sharp contrast with NSP in the crystalline state, which is much less photosensitive. These results suggest that the host cavity offers a sufficient free volume for phototransformation of the guest molecule. The colored form of the inclusion compounds were found to be more stable both chemically upon prolonged UV irradiation and thermally in the dark as compared with that in a PMMA film. Springer-Verlag, 1990 Tamaki Takashi Research Institute for Polymers and Textiles, 1-1-4 Higashi, 305, Tsukuba, Japan aut Sakuragi Masako Research Institute for Polymers and Textiles, 1-1-4 Higashi, 305, Tsukuba, Japan aut Ichimura Kunihiro Research Institute for Polymers and Textiles, 1-1-4 Higashi, 305, Tsukuba, Japan aut Aoki Koso Toda Kogyo Corp., Funairi-Minami, Naka-ku, 730, Hiroshima, Japan aut Arima Ikuko Science and Engineering Department, Tokyo Science University, Yamasaki, 278, Noda, Chiba, Japan aut Polymer Bulletin Springer-Verlag 24/5(1990-11-01), 559-564 0170-0839 24:5<559 1990 24 289 https://doi.org/10.1007/BF00395580 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00395580 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tamaki Takashi Research Institute for Polymers and Textiles, 1-1-4 Higashi, 305, Tsukuba, Japan aut NATIONALLICENCE 700 1- Sakuragi Masako Research Institute for Polymers and Textiles, 1-1-4 Higashi, 305, Tsukuba, Japan aut NATIONALLICENCE 700 1- Ichimura Kunihiro Research Institute for Polymers and Textiles, 1-1-4 Higashi, 305, Tsukuba, Japan aut NATIONALLICENCE 700 1- Aoki Koso Toda Kogyo Corp., Funairi-Minami, Naka-ku, 730, Hiroshima, Japan aut NATIONALLICENCE 700 1- Arima Ikuko Science and Engineering Department, Tokyo Science University, Yamasaki, 278, Noda, Chiba, Japan aut NATIONALLICENCE 773 0- Polymer Bulletin Springer-Verlag 24/5(1990-11-01), 559-564 0170-0839 24:5<559 1990 24 289 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer