Identification of the Irreversible Redox Behavior of Highly Fluorescent Benzothiadiazoles,ChemPhotoChem

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Identification of the Irreversible Redox Behavior of Highly Fluorescent Benzothiadiazoles
ChemPhotoChem ( IF 3.0 ) Pub Date : 2020-04-29 , DOI: 10.1002/cptc.202000050
Philipp Rietsch ₁ , Sebastian Sobottka ₂ , Katrin Hoffmann ₃ , Pascal Hildebrandt ₁ , Biprajit Sarkar _{2,

4} , Ute Resch‐Genger ₃ , Siegfried Eigler ₁

Affiliation

Redox switches are applied in various fields of research, including molecular lifts, electronic devices and sensors. Switching the absorbance between UV and Vis/NIR by redox processes is of interest for applications in light harvesting or biomedicine. Here, we present a series of push‐pull benzothiadiazole derivatives with high fluorescence quantum yields in solution and in the crystalline solid state. Spectroelectrochemical analysis reveals the switching of UV‐absorption in the neutral state to Vis/NIR absorption in the reduced state. We identify the partial irreversibility of the switching process, which appears to be reversible on the cyclic voltammetry timescale.

中文翻译：

高荧光度苯并噻二唑的不可逆氧化还原行为的鉴定

氧化还原开关应用于各种研究领域，包括分子举升，电子设备和传感器。通过氧化还原工艺在UV和Vis / NIR之间切换吸光度对于光收集或生物医学中的应用很重要。在这里，我们介绍了一系列推挽式苯并噻二唑衍生物，它们在溶液和结晶固态中具有高荧光量子产率。光谱电化学分析表明，中性态的紫外吸收转换为还原态的Vis / NIR吸收。我们确定了开关过程的部分不可逆性，这在循环伏安法时标上似乎是可逆的。

更新日期：2020-04-29

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