一种保护层策略用于溶剂变色传感器。
A protective layer approach to solvatochromic sensors.
机构信息
Department of Chemical Engineering, Hanyang University, Seoul 133-791, Korea.
出版信息
Nat Commun. 2013;4:2461. doi: 10.1038/ncomms3461.
As they have been designed to undergo colorimetric changes that are dependent on the polarity of solvents, the majority of conventional solvatochromic molecule based sensor systems inevitably display broad overlaps in their absorption and emission bands. As a result, colorimetric differentiation of solvents of similar polarity has been extremely difficult. Here we present a tailor-made colorimetric and fluorescence turn-on type solvatochromic sensor that enables facile identification of a specific solvent. The sensor system displays a colorimetric transition only when a thin protective layer, which protects the solvatochromic materials, is destroyed or disrupted by a specific solvent. The versatility of the strategy is demonstrated by designing a sensor that differentiates chloroform and dichloromethane colorimetrically and one that performs sequence selective colorimetric sensing. In addition, the approach is employed to construct a solvatochromic molecular AND logic gate. The new strategy could open new avenues for the development of novel solvatochromic sensors.
由于它们被设计为经历依赖于溶剂极性的比色变化，大多数基于传统溶剂显色分子的传感器系统不可避免地在其吸收和发射带中显示出广泛的重叠。因此，对具有相似极性的溶剂进行比色区分极其困难。在这里，我们提出了一种定制的比色和荧光开启型溶剂显色传感器，能够轻松识别特定溶剂。只有当保护溶剂显色材料的薄保护层被特定溶剂破坏或破坏时，传感器系统才会显示比色转变。通过设计一种能够比色区分氯仿和二氯甲烷的传感器以及一种能够进行序列选择性比色传感的传感器，证明了该策略的多功能性。此外，该方法还用于构建溶剂显色分子与或非逻辑门。这种新策略可能为新型溶剂显色传感器的发展开辟新途径。
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