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Galangau O.,Nara Institute of Science and Technology | Nakashima T.,Center for Frontier Science and Technology | Maurel F.,University Paris Diderot | Kawai T.,Nara Institute of Science and Technology
Chemistry - A European Journal | Year: 2015

Five diarylethene photochromic derivatives, the structures of which incorporate a central benzothiophene unit, a left-hand thiazole group, and a right-hand benzothiophene group, have been prepared. The compound with a thiazole unit with no substituent on the reaction-center carbon atom reveals an unprecedented transformation upon light irradiation. When the 4-position of thiazole is protected by a methyl group, the compounds show high photosensitivity and photochromic properties. In this case, light irradiation affords new compounds with [5]helicene structures featuring the highest redshifted absorption maxima reported to date. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source


Galangau O.,Center for Frontier Science and Technology | Galangau O.,Nara Institute of Science and Technology | Nakashima T.,Center for Frontier Science and Technology | Maurel F.,CNRS Laboratory of Interfaces, Processing, Organization and System Dynamics | And 2 more authors.
Chemistry - A European Journal | Year: 2015

Five diarylethene photochromic derivatives, the structures of which incorporate a central benzothiophene unit, a left-hand thiazole group, and a right-hand benzothiophene group, have been prepared. The compound with a thiazole unit with no substituent on the reaction-center carbon atom reveals an unprecedented transformation upon light irradiation. When the 4-position of thiazole is protected by a methyl group, the compounds show high photosensitivity and photochromic properties. In this case, light irradiation affords new compounds with [5]helicene structures featuring the highest redshifted absorption maxima reported to date. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

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