Helicene-based chiroptical switches

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• 作者：Helena Isla ; Jeanne Crassous ; ^{jeanne.crassous@univ-rennes1.fr" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Chiroptical switches ; Helicenes ; Optical activity ; Circularly polarized light ; Circular dichroism ; Molecular materials
• 刊名：Comptes Rendus Chimie
• 出版年：2016
• 出版时间：January-February 2016
• 年：2016
• 卷：19
• 期：1-2
• 页码：39-49
• 全文大小：2361 K

文摘

Helicenes are molecules with ortho-fused aromatic rings that adopt an inherently chiral helical shape. This helical topology combined with the extended π-conjugated system provides them with excellent chiroptical and photophysical properties. These properties and peculiarities make helicenes important candidates for the conception of new chiroptical switches. Several examples of light-, redox- and pH-triggered helicene-based switches have recently appeared in the literature including examples from our group. Some of them are multi-input and/or multi-output systems in which the changes can be triggered by different stimuli and/or read-out by different techniques, an attractive advantage for functional materials.