Diastereoselective, Synergistic Dual-Mode Optical Switch with Integrated Chirochromic Helicene and Photochromic Bis-azobenzene Moieties

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• 作者：Wen-Ching Chen ; Yi-Wei Lee ; Chien-Tien Chen
• 刊名：Organic Letters
• 出版年：2010
• 出版时间：April 2, 2010
• 年：2010
• 卷：12
• 期：7
• 页码：1472-1475
• 全文大小：240K
• 年卷期：v.12,no.7(April 2, 2010)
• ISSN：1523-7052

文摘

An unprecedented dual-mode optical switch by combining helicene and bis-azobenzene moieties in proximity allows for cooperative, highly diastereoselective chirochromic (92/8 to 3/97) and photochromic (>99/<1 to 19/81) switchings both in solution and in nematic LC with tunable pitches and handedness by permutation of four different metastable states.