Stimuli-responsive self-assembled multilayer azo thin films: Photo-switchable absorbance and morphological characteristics |
| |
| Affiliation: | 1. Department for Solar Energy, Institute for Energy Technology, NO-2027 Kjeller, Norway;2. Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120 Uppsala, Sweden;3. Department of Materials Science, Moscow Engineering Physics Institute, 115409 Moscow, Russia;1. School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, People''s Republic of China;2. Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190, People''s Republic of China;1. Photonics Research Center, School of Electronic and Communications Engineering, Dublin Institute of Technology, Kevin Street, Dublin 8, Ireland;2. Department of Electronic Engineering, City University of Hong Kong, Hong Kong, China;3. School of Physics, Trinity College Dublin, Dublin 2, Ireland;4. CRANN, Trinity College, Dublin 2, Ireland;1. Ulyanovsk Branch of Kotel’nikov Institute of Radio Engineering and Electronics of Russian Academy of Sciences, 432011 Ulyanovsk, Russia;2. Technological Research Institute, Ulyanovsk State University, 432700 Ulyanovsk, Russia;3. CREOL, The College of Optics and Photonics, University of Central Florida, 32816 Orlando, FL, USA;4. National Research University of Information Technologies, Mechanics and Optics, 197101 St. Petersburg, Russia;5. Kotel’nikov Institute of Radio Engineering and Electronics of Russian Academy of Sciences, 125009 Moscow, Russia |
| |
| Abstract: | Light has been employed as a source of energy for surface modulation, tuning and control in photo-responsive azo-incorporating self-assembled polyelectrolyte multilayer thin films. A custom built setup for controlled exposure enabled successful photo-switching. Spectral changes were characterized through UV–vis spectroscopy, while scanning electron microscopy technique was employed to study structural properties and response of the films. The effects of chromophore aggregation and dispersion on thin film photo-responsiveness have been studied, with significant contributions made to a recently proposed model correlating structural and spectral properties of the azo thin films. Structural and optical photo-responses have been acquired for surface tuning and modulation, while photo-reversibility is also achieved to control surface properties cyclically. |
| |
| Keywords: | Azobenzene Methyl orange Morphology Photo-switchable Self-assembled thin films |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
