Bridging the Visible: The Modulation of the Absorption by More than 450 nm

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• 作者：Stphanie Delbaere ; Gaston Vermeersch ; Michel Frigoli ; Georg H. Mehl
• 刊名：Organic Letters
• 出版年：2010
• 出版时间：September 17, 2010
• 年：2010
• 卷：12
• 期：18
• 页码：4090-4093
• 全文大小：225K
• 年卷期：v.12,no.18(September 17, 2010)
• ISSN：1523-7052

文摘

The coexistence of 18 isomers, identified by NMR spectroscopy and gathered into six states with very different absorption properties, is observed upon irradiation with selective wavelengths of a triphotochromic system joining two naphthopyran entities through a dithienylethene bridge. The sequential electronic coupling of photochromic groups resulted in an absorption behavior reaching far into NIR.