Magnetic Control of Recombination Fluorescence and Tunability by Modulation of Radical Pair Energies in Rigid Donor–Bridge–Acceptor Systems,Journal of the American Chemical Society

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Magnetic Control of Recombination Fluorescence and Tunability by Modulation of Radical Pair Energies in Rigid Donor–Bridge–Acceptor Systems
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-11-30 , DOI: 10.1021/jacs.0c09146
Jason T. Buck ₁ , Tomoyasu Mani _{1,

2}

Affiliation

Magnetic control of molecular emission holds the promise of developing new magneto-optical technologies. Spin dynamics of radical pairs can serve as a basis of control of chemical reactions by weak magnetic fields (<1 T) orders of magnitude smaller than the thermal energy kBT at room temperature. Here we demonstrate control of recombination fluorescence, produced by charge recombination of photogenerated radical pairs, by weak magnetic fields in rigid donor-bridge-acceptor molecules excited with visible light. We can tune the field response range by chemically modulating the energies of the radical pairs affecting exchange interactions. Our results present a new strategy for designing magneto-optical probes for imaging and other molecular spin technology applications.

中文翻译：

通过调节刚性供体-桥-受体系统中的自由基对能量对重组荧光和可调性的磁性控制

分子发射的磁控制有望开发新的磁光技术。自由基对的自旋动力学可以作为控制化学反应的基础，弱磁场 (<1 T) 数量级小于室温下的热能 kBT。在这里，我们展示了通过可见光激发的刚性供体-桥-受体分子中的弱磁场，通过光生自由基对的电荷重组产生的重组荧光的控制。我们可以通过化学调节影响交换相互作用的自由基对的能量来调整场响应范围。我们的研究结果提出了一种设计用于成像和其他分子自旋技术应用的磁光探针的新策略。

更新日期：2020-11-30

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