Chemical reactions are classically controlled by the judicious choice of functional groups as well as external factors such as temperature and catalysts. However, the use of light‐induced reactions not only offers precise temporal and spatial control, but critically allows highly specific reaction channels to be selectively addressed through wavelength and intensity, thereby enabling targeted covalent bonds to be made and broken. Photoreversible cycloadditions are the most promising candidates to seize the outlined potential upon selective cyclization and cycloreversion, but are today still far from fulfilling these expectations. The current Minireview critically explores the current challenges in the application of photoreversible cycloadditions and discusses the steps necessary to realize their potential in molecular biology, biomimetic systems, 3D laser lithographic processes, and advanced soft matter materials with reprogrammable and self‐healing properties.

中文翻译：

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波长门控动态共价化学

传统上，化学反应是通过明智地选择官能团以及诸如温度和催化剂之类的外部因素来控制的。但是，光诱导反应的使用不仅可以提供精确的时间和空间控制，而且可以严格地允许通过波长和强度选择性地选择高度特异性的反应通道，从而实现目标键的共价键的形成和断裂。光可逆环加成是在选择性环化和环还原后抓住概述的潜力的最有前途的候选者，但今天仍远未达到这些期望。当前的Minireview批判性地探索了光可逆环加成应用中的当前挑战，并讨论了实现其在分子生物学，仿生系统，