Metal-binding hydrazone photoswitches for visible light reactivity and variable relaxation kinetics,Photochemical & Photobiological Sciences

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Metal-binding hydrazone photoswitches for visible light reactivity and variable relaxation kinetics
Photochemical & Photobiological Sciences ( IF 2.7 ) Pub Date : 2017-10-31 00:00:00 , DOI: 10.1039/c7pp00173h
Kacey C. Hall _{1,

2,

3,

4} , Andrew T. Franks _{1,

2,

3,

4} , Rory C. McAtee _{1,

2,

3,

4} , Michael S. Wang _{1,

2,

3,

4} , Vivian I. Lu _{1,

2,

3,

4} , Katherine J. Franz _{1,

2,

3,

4}

Affiliation

The range of applications for photoswitching moieties is diverse, and the ability to design switches with variable photochemical and physical properties is consequently important for realizing their potential. Previously we reported on the photochromism of (E)-N′-(1-(2-hydroxyphenyl)ethylidene)isonicotinohydrazide (HAPI), an aroylhydrazone compound first developed as a transition metal chelator. Herein we report the synthesis of structurally related aroylhydrazone chelators and explore the effect of these modifications on their UVA, UVC and blue light photoreactivity, photostationary state composition, photoisomer thermal stability, and relative iron(III) binding affinity. These findings will inform the next generation of aroylhydrazone photoswitches for metal-gated photoswitching applications.

中文翻译：

金属结合光电开关，用于可见光反应性和可变弛豫动力学

光开关部分的应用范围是多种多样的，因此设计具有可变的光化学和物理性质的开关的能力因此对于实现其潜力很重要。以前我们报道了（E）-N '-（1-（2-羟苯基）亚乙基）异烟酰肼（HAPI）的光致变色现象，这是一种首先开发为过渡金属螯合剂的芳酰yl化合物。本文中我们报告了结构相关的芳酰hydr螯合剂的合成，并探讨了这些修饰对其UVA，UVC和蓝光光反应性，光平稳态组成，光异构体热稳定性和相对铁的影响（III）绑定亲和力。这些发现将为用于金属门控光开关应用的下一代芳酰photo光开关提供信息。

更新日期：2017-11-08

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