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Year 2005, Month 12 (Section Full Articles, Page 2790)

Photochromic 1,2-dihetarylethenes with perf luorocyclopentene bridge: synthesis and spectral and kinetic study

V. N. Yarovenko (a), A. A. Es´kov (a), S. L. Semenov (a), I. V. Zavarzin (a), V. I. Kadentsev (a), M. A. Kalik (a), M. M. Krayushkin (a), Yu. P. Strokach (b), T. M. Valova (b), Z. O. Golotyuk (c), and V. A. Barachevsky (b)

A spectral and kinetic study was carried out of some substituted 1,2-dithienylper- fluorocyclopentenes and 1,2-bis(benzo[b]thienyl)perfluorocyclopentenes suitable for use as photosensitive components of photochromic recording media for optical memory. The introduction of nitro groups into the benzothienyl moieties dramatically decreases photodegradation and increases the fatigue resistance of these photochromes.

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