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Enhanced Spin-Nuclei Couplings of Paramagnetic Azametallofullerene Hooped in Cycloparaphenylene
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2023-02-22 , DOI: 10.1021/acs.jpcc.3c00158 Yuxi Lu 1, 2 , Chong Zhao 3 , Jie Zhang 1, 2 , Wang Li 1 , Linshan Liu 1 , Chaofeng Zheng 1, 2 , Chunru Wang 1 , Taishan Wang 1
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2023-02-22 , DOI: 10.1021/acs.jpcc.3c00158 Yuxi Lu 1, 2 , Chong Zhao 3 , Jie Zhang 1, 2 , Wang Li 1 , Linshan Liu 1 , Chaofeng Zheng 1, 2 , Chunru Wang 1 , Taishan Wang 1
Affiliation
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Azametallofullerene Y2@C79N has outstanding electron spin characteristics with potential application in the fields of magnetoreception system and precision measurement as a molecular spin probe. Herein, we report the spin modulation of Y2@C79N by means of host–guest interaction with a carbon nanoring of [12]Cycloparaphenylene ([12]CPP). By means of temperature-dependent electron paramagnetic resonance (EPR) measurements, the adjustable EPR signals of Y2@C79N⊂[12]CPP were observed, revealing the great effect of host–guest interaction on the spin and paramagnetic property of hooped Y2@C79N. The EPR signals of Y2@C79N⊂[12]CPP and pristine Y2@C79N were comparatively investigated in carbon disulfide and in solid state, and it was found that the Y2@C79N⊂[12]CPP complex exhibits enhanced spin-nuclei couplings compared to those of pristine Y2@C79N. We propose that the [12]CPP host can induce the orientation of the Y2@C79N guest, and consequently change the spin-nuclei couplings of Y2@C79N. This study would promote the creation of new molecular spin materials.
中文翻译：
顺磁性氮杂金属富勒烯在环对亚苯基中的增强自旋核耦合
氮杂金属富勒烯Y 2 @C 79 N 具有突出的电子自旋特性，作为分子自旋探针在磁感应系统和精密测量领域具有潜在的应用前景。在此，我们报告了 Y 2 @C 79 N 通过主客体相互作用与 [12] 环对亚苯基 ([12]CPP) 的碳纳米环的自旋调制。通过温度依赖性电子顺磁共振 (EPR) 测量，观察到 Y 2 @C 79 N⊂[12]CPP 的可调 EPR 信号，揭示了主客体相互作用对环状结构的自旋和顺磁性质的巨大影响Y 2 @C 79 N. Y 2的EPR信号@C 79 N⊂[12]CPP 和原始 Y 2 @C 79 N 在二硫化碳和固态下进行了比较研究，发现 Y 2 @C 79 N⊂[12]CPP 络合物表现出增强的自旋-核耦合与原始 Y 2 @C 79 N 相比。我们提出 [12]CPP 主体可以诱导 Y 2 @C 79 N 客体的取向，从而改变 Y 2 @C的自旋核耦合79 N. 这项研究将促进新分子自旋材料的创造。
更新日期：2023-02-22
中文翻译：
顺磁性氮杂金属富勒烯在环对亚苯基中的增强自旋核耦合
氮杂金属富勒烯Y 2 @C 79 N 具有突出的电子自旋特性，作为分子自旋探针在磁感应系统和精密测量领域具有潜在的应用前景。在此，我们报告了 Y 2 @C 79 N 通过主客体相互作用与 [12] 环对亚苯基 ([12]CPP) 的碳纳米环的自旋调制。通过温度依赖性电子顺磁共振 (EPR) 测量，观察到 Y 2 @C 79 N⊂[12]CPP 的可调 EPR 信号，揭示了主客体相互作用对环状结构的自旋和顺磁性质的巨大影响Y 2 @C 79 N. Y 2的EPR信号@C 79 N⊂[12]CPP 和原始 Y 2 @C 79 N 在二硫化碳和固态下进行了比较研究，发现 Y 2 @C 79 N⊂[12]CPP 络合物表现出增强的自旋-核耦合与原始 Y 2 @C 79 N 相比。我们提出 [12]CPP 主体可以诱导 Y 2 @C 79 N 客体的取向，从而改变 Y 2 @C的自旋核耦合79 N. 这项研究将促进新分子自旋材料的创造。
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