Rational Design and Application of a Redox-Active, Photoresponsive, Discrete Metallogelator
Rational Design and Application of a Redox-Active, Photoresponsive, Discrete Metallogelator
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DOI：
10.1002/chem.201500704
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发表时间：
2015-05-18
影响因子：
4.3
通讯作者：
Kraatz, Heinz-Bernhard
中科院分区：
文献类型：
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作者：
Afrasiabi, Rouzbeh;Kraatz, Heinz-Bernhard
通过在具有氧化还原活性的二茂铁-肽共轭物的结构中引入光致变色偶氮苯亚基，合理设计了一种光响应的离散金属配体。靶分子有目的地配备有能够响应于超声处理而自组装的二肽单元。所设计的分子被证明进行超分子自组装，并实现响应于超声，光，热，氧化还原信号的有机糖。所设计的凝胶剂的溶胶-凝胶相变被发现对过多的输入刺激敏感，允许在基本逻辑门操作中应用溶胶-凝胶转变行为。当有机凝胶的氧化还原活性性质通过使用不同的氧化剂进行检查时，实现了基于凝胶的非逻辑门操作。在氧化或非氧化条件下设计XOR操作时，进一步利用凝胶因子的智能响应。
A photoresponsive discrete metallogelator was rationally designed by incorporating a photochromic azobenzene subunit in the structure of a redox-active ferrocene-peptide conjugate. The target molecule was purposefully equipped with a dipeptide unit capable of self-assembly in response to sonication. The designed molecule was shown to undergo supramolecular self-assembly and achieve organogelation in response to ultrasound, light, heat, and redox signals. The sol-gel phase transition of the designed gelator was found to be sensitive to a plethora of input stimuli, allowing the application of the sol-gel transition behavior in basic logic gate operations. A gel-based NOT logic gate operation was realized when the redox-active property of the organogel was examined by using different oxidizing agents. The smart response of the gelator was further exploited in designing XOR operations under oxidizing or non-oxidizing conditions.