Device for automated screening of irradiation wavelength and intensity – investigation of the wavelength dependence of photoreactions with an arylazo sulfone in continuous flow,Reaction Chemistry & Engineering

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Device for automated screening of irradiation wavelength and intensity – investigation of the wavelength dependence of photoreactions with an arylazo sulfone in continuous flow
Reaction Chemistry & Engineering ( IF 3.4 ) Pub Date : 2022-06-14 , DOI: 10.1039/d2re00142j
Thomas Roider ₁ , Norbert Frommknecht ₁ , Alexandra Höltzel ₁ , Ulrich Tallarek ₁

Affiliation

We introduce a device that allows programmable, automated changes of the irradiation wavelength and intensity for use with a continuous-flow photoreactor. Combined with parallel chromatographic analysis, the set-up enables systematic screening of photoreactions in a remarkably short time frame. This is demonstrated by investigating the photoconversion of an arylazo sulfone under different reaction conditions, with and without the use of an additive. Data obtained from a series of systematic wavelength screenings at defined irradiation intensity reveal a previously unknown intermediate and disclose a new, wavelength-dependent reaction pathway. Our study shows how systematic screening of the wavelength and irradiation intensity can contribute to the fundamental understanding of photochemical reactions.

中文翻译：

辐照波长和强度自动筛选装置——研究与芳基砜在连续流动中的光反应的波长依赖性

我们介绍了一种设备，该设备允许对辐照波长和强度进行可编程的自动更改，以用于连续流光反应器。结合平行色谱分析，该设置可以在非常短的时间内系统地筛选光反应。这通过研究芳基砜在不同反应条件下（使用和不使用添加剂）的光转化来证明。在确定的辐照强度下从一系列系统波长筛选中获得的数据揭示了一种以前未知的中间体，并揭示了一种新的、波长相关的反应途径。我们的研究显示了波长和辐照强度的系统筛选如何有助于对光化学反应的基本理解。

更新日期：2022-06-17

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