利用质子梯度进行能量转换

IF 7.6 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chemical Science Pub Date : 2024-11-08 DOI:10.1039/d4sc04833d

Xinchen Dai, Cesare Berton, Dong Jun Kim, Cristian Pezzato

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引用次数: 0

摘要

基于美拉尼光酸的光开关缓冲溶液可用作高效的光能收集系统。改变梅洛菁光酸在水-甲醇混合物中的溶解环境，可以仔细调节它们的光酸度、弛豫动力学和溶解度，从而有可能在 500 纳米波长的光照下安装约 4 个 pH 单位的持久 pH 梯度。当将这些溶液连接到两个电极并置于不对称光照射下时，它们可以在空间和时间上被精确光激活，产生高达 240 mV 的开路电压，在稳态照射下可持续数小时--这种结果类似于生物跨膜质子泵的峰值性能。

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Wiring proton gradients for energy conversion

Light-switchable buffer solutions based on merocyanine photoacids can be used as efficient photoenergy harvesting systems. Varying the solvation environment of merocyanine photoacids in water-methanol mixtures allows one to carefully tune their photoacidity, relaxation kinetics, and solubility, opening up the possibility to install persistent pH gradients of approximately 4 pH units under 500 nm light. When interfaced between two electrodes and exposed to asymmetric light irradiation, these solutions can be photoactivated precisely both in space and time, generating open circuit voltages as high as 240 mV that can last hours under steady-state irradiation – an outcome that is akin the peak performance of biological transmembrane proton pumps.

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来源期刊

Chemical Science CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

14.40

自引率

4.80%

发文量

1352

审稿时长

2.1 months

期刊介绍： Chemical Science is a journal that encompasses various disciplines within the chemical sciences. Its scope includes publishing ground-breaking research with significant implications for its respective field, as well as appealing to a wider audience in related areas. To be considered for publication, articles must showcase innovative and original advances in their field of study and be presented in a manner that is understandable to scientists from diverse backgrounds. However, the journal generally does not publish highly specialized research.