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arXiv 2102.07274physics.chem-phcond-mat.stat-mech
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光诱导质子耦合电子转移过程的二维共振电子振动光谱研究

Probing photoinduced proton coupled electron transfer process by means of two-dimensional resonant electronic-vibrational spectroscopy

Jiaji Zhang, Raffaele Borrelli, Yoshitaka Tanimura

摘要:

我们开发了一个详细的理论模型的光诱导质子耦合电子转移(PPCET)过程,这是在生物系统和光伏材料的基础上收集太阳能。我们的模型能够分析的动力学和效率的PPCET反应的热环境的影响下,通过解开的基本电子转移(ET)和质子转移(PT)步骤的贡献。为了研究非马尔可夫环境下PPCET过程的量子动力学,我们采用了分级运动方程(HEOM)。我们计算瞬态吸收光谱(TAS)和一个新定义的二维共振电子振动光谱(2DREVS)的信号,以研究非平衡反应动力学。我们的研究结果表明,不同的过渡途径可以分开TAS和2DREVS。

英文摘要:

We develop a detailed theoretical model of photo-induced proton-coupled electron transfer (PPCET) processes, which are at the basis of solar energy harvesting in biological systems and photovoltaic materials. Our model enables to analyze the dynamics and the efficiency of a PPCET reaction under the influence of a thermal environment by disentangling the contribution of the fundamental electron transfer (ET) and proton transfer (PT) steps. In order to study quantum dynamics of the PPCET process under an interaction with non-Markovian environment we employ the hierarchical equations of motion (HEOM). We calculate transient absorption spectroscopy (TAS) and a newly defined two-dimensional resonant electronic-vibrational spectroscopy (2DREVS) signals in order to study the nonequilibrium reaction dynamics. Our results show that different transition pathways can be separated by TAS and 2DREVS.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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