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Derivatives of 2-dicyanomethylen-3-cyano-2,5-dihydrofuran (DCDHF) have been synthesized by different methods to be used as photorefractive (PR) chromophores. Structure modifications were performed on the donor, acceptor and conjugated π-system for improving properties such as glass formation. Structure-property relationships important for PR applications are discussed from the results of studies including UV-Vis, electrochemistry and DSC.
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Meng He, Robert J. Twieg, Oksana Ostroverkhova, Ulrich J. Gubler, Daniel Wright, William E. Moerner, "Dicyanomethylenedihydrofuran photorefractive materials," Proc. SPIE 4802, Organic Photorefractive and Photosensitive Materials for Holographic Applications, (5 November 2002); https://doi.org/10.1117/12.452454