Journal
DYES AND PIGMENTS
Volume 88, Issue 1, Pages 18-24Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2010.04.010
Keywords
Azo; Polymer; Substituent; Nonlinear optical; Electric memory; Device
Funding
- National Natural Science Foundation of China [20876101, 20902065]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [09KJB430010]
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The third-order nonlinear optical properties and electric memory behavior of azobenzene polymers were influenced by different substituents. The nonlinear optical coefficients of polymer films measured using the Z-scan technique revealed that the polymers with different substituents exhibited different nonlinear absorption The reversibility of sandwich memory devices based on the azobenzene polymers was dependant on the terminal substituent on the azobenzene chromophore. Polymers with electron-accepting terminal moieties in the azobenzene pendant showed write-once-read-many-times memory whereas the polymer that contained electron-donating moieties displayed a FLASH-type (rewritable) memory. (C) 2010 Elsevier Ltd All rights reserved.
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