分子开关氧化转化器穿器,带有可调节的六酸连接体
Austin L Raithel1, William E Meador2, Tea-Yon Kim1
1Department of Chemistry, Michigan State University, 578 S Shaw Lane, East Lansing, Michigan48823, United States.
Journal of the American Chemical Society
|January 3, 2023
概括
具有可调节的氧化还原潜力的新复合物在染料敏感的太阳能电池中充当高效的氧化还原航天器,改善光电流. 这些低旋转复合体表现出独特的分子切换行为.
科学领域:
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
背景情况:
- 复合物被广泛研究用于氧化还原应用.
- 调整氧化还原潜力对于优化电化学设备至关重要.
- 染料敏感太阳能电池 (DSSC) 需要高效的氧化还原介质进行再生.
研究的目的:
- 为了合成和表征新的强场六酸复合物.
- 为了研究这些复合物的氧化还原特性和自旋状态行为.
- 评估它们在DSSC中作为氧化还原航天器的性能.
主要方法:
- 强场六酸联体的合成及其对的协调.
- 电化学表征 (通过连接物修饰调整氧化还原潜力).
- 电子自我交换率测量. 电子自我交换率测量.
- 使用合成的复合物作为氧化还原班车制造和测试DSSC.
主要成果:
- 合成了三种新的低旋转到低旋转的Co ((III/II) 氧化还原对.
- 可调整的氧潜力从 -200 到 -430 mV 与 Fc+/0.0 相比.
- 观察到一个可逆的分子切换从五坐标的Co (II) 到六坐标的Co (III).
- 与[Co(bpy) ]3+/2+相比,实现了更快的电子自我交换率 (2.2-4.2 M-1 s-1).
- 在使用AP25+D35染料的DSSC中,改善了光电流 (19.8mA/cm2).
结论:
- 合成的复合体提供可调节的氧化还原潜力和独特的协调切换行为.
- 这些复合物在DSSC中充当有效的氧化还原穿器,性能优于传统的复合物.
- 未来的工作应该专注于将这些复杂物与近红外吸收染料配对,以提高太阳能转化率.
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