Y.T. gratefully acknowledges financial support through a Grant-in-Aid for Scientific Research on Priority Areas (No. 417 and No. 438) from the Ministry of Education, Culture, Sports, Science, and Technology, Japan. NIPA was kindly provided by KOHJIN Co., Ltd.
A Thermally Adjustable Multicolor Photochromic Hydrogel†
Article first published online: 19 JAN 2007
Copyright © 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 46, Issue 10, pages 1688–1692, February 26, 2007
How to Cite
Matsubara, K., Watanabe, M. and Takeoka, Y. (2007), A Thermally Adjustable Multicolor Photochromic Hydrogel. Angew. Chem. Int. Ed., 46: 1688–1692. doi: 10.1002/anie.200603554
- Issue published online: 19 FEB 2007
- Article first published online: 19 JAN 2007
- Manuscript Revised: 17 OCT 2006
- Manuscript Received: 31 AUG 2006
- Grant-in-Aid for Scientific Research on Priority Areas. Grant Number: 417 and No. 438
- phase transitions;
- reflection spectroscopy
A rainbow of possibilities: A porous polymer gel undergoes light-triggered rapid two-state switching between two arbitrary structural colors at a controlled temperature (see picture; “on”: upon UV irradiation, “off”: in the dark). This switching is attributed to a change between two volume states. As the temperature also contributes to the degree of swelling of the gel, the color of the gel can be tuned thermally over a wide range of wavelengths.