Reaction Dynamics and Applications in Patterning of Bisthienylcyclopentene-Based Photochromic Switches
| Autor: | P.R. Hania, J. H van Esch, Audrius Pugzlys, Linda N. Lucas, Jjd de Jong, Ben L. Feringa, Koos Duppen |
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| Rok vydání: | 2004 |
| Předmět: |
Diffraction
Materials science Holographic grating business.industry Holography Grating Condensed Matter Physics Diffraction efficiency Atomic and Molecular Physics and Optics law.invention Photochromism Optics law General Materials Science Diffusion (business) Absorption (electromagnetic radiation) business |
| Zdroj: | Solid State Phenomena. :207-214 |
| ISSN: | 1662-9779 |
| DOI: | 10.4028/www.scientific.net/ssp.97-98.207 |
| Popis: | The structural and optical properties of the gel-forming photochromic switch 1,2-bis(2’-methyl-5’-{{((R) phenylethyl)amino}carbonyl}thienyl-3’-yl)cyclopentene are studied by means of the linear absorption and holographic grating techniques. The use of diffractive optics enables recording of holographic gratings with high long-term phase stability. The diffraction efficiency of the recorded holographic gratings approach values of 30% for low writing beam energies when diffusion is the rate determining factor. At higher writing pulse energies the competition between the diffusion and photodecomposition processes causes lower diffraction efficiencies. At irradiation doses above 10 mJ the spatial profile of the recorded gratings is strongly influenced by saturation effects. Because of the well-determined grating profile the holographic grating technique is potentially applicable for the quantitative characterisation of the diffusion process in photochromic gels. |
| Databáze: | OpenAIRE |
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