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Facile synthesis and characterization of new photochromic trans-dithienylethenes functionalized with pyridines and fluorenes

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Abstract

Three symmetrical and unsymmetrical trans-dithienylethenes functionalized with pyridines and fluorenes have been synthesized by a facile one-pot procedure, and their characteristics and photochromism were investigated. Their fluorescent intensity was efficiently regulated by a photochromic switch using alternative irradiation with UV light and visible light. Moreover, by protonation and complexation, the pyridyl-substituted compounds also showed excellent photoswitching properties with distinguishable color changes. These characteristics are expected to be applicable to potential multi-addressable photoswitch and erasable optical data processing technologies.

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Correspondence to He Tian.

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This paper is part of a themed issue on synthetic and natural photoswitches.

Electronic supplementary information (ESI) available: Details of the synthetic procedures and 1H NMR spectral data for compounds 1′-3′, and the optimized conformations of all six trans- and cis-isomers. See DOI: 10.1039/b9pp00088g

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Luo, Q., Liu, Y., Li, X. et al. Facile synthesis and characterization of new photochromic trans-dithienylethenes functionalized with pyridines and fluorenes. Photochem Photobiol Sci 9, 234–238 (2010). https://doi.org/10.1039/b9pp00088g

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  • DOI: https://doi.org/10.1039/b9pp00088g

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