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Fast photorefractive response in polymeric composites enabled by the control of chromophore free volume
- Issue Date
- Jul-2018
- Publisher
- OPTICAL SOC AMER
- Citation
- OPTICS LETTERS, v.43, no.14, pp 3289 - 3292
- Pages
- 4
- Journal Title
- OPTICS LETTERS
- Volume
- 43
- Number
- 14
- Start Page
- 3289
- End Page
- 3292
- ISSN
- 0146-9592
1539-4794
- Abstract
- The molecular orientation of a chromophore importantly affects the electro-optic characteristics of polymeric photorefractive composites. We designed methyl, ethyl, and isopropyl derivatives of 4-piperidinobenzylidene-malononitrile (PDCST) with the aim of enhancing molecular orientation properties, and investigated the effects of alkyl substitution on the electro-optic properties and response times of polymeric photorefractive composites. The three alkyl-substituted PDCSTs showed enhanced electro-optic responses and photorefractive grating buildup rates.
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