Temperature Effects in Singlet Fission under Vibrational Strong Couplings in a Cavity

IF 5.5 1区 化学 Q2 CHEMISTRY, PHYSICAL
Xiao Wang, Kewei Sun, Haomin Xiao, Yang Zhao and Maxim F. Gelin*, 
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引用次数: 0

Abstract

We use the numerically accurate multiple Davydov ansatz with thermo-field dynamics (mDA-TFD) methodology to simulate quantum evolution of the conical intersection (CI)-driven singlet fission (SF) system strongly coupled to an optical cavity. We comprehensively analyze the impact of temperature, cavity-mode frequencies and lifetimes, vibrational coupling, and averaged numbers of photons pumped into the cavity modes on the SF dynamics. We have unveiled several new mechanisms regulating the CI-driven SF process in optical cavities, providing theoretical guidance for enhancing the SF efficiency. In particular, we have demonstrated that the simultaneous variation of several parameters governing SF can cause unconventional but robust cooperative effects, which may help to control SF in real systems.

Abstract Image

腔内振动强耦合下单线态裂变的温度效应
我们使用数值精确的多重Davydov ansatz与热场动力学(md - tfd)方法模拟了强耦合于光学腔的锥形交叉(CI)驱动的单重态裂变(SF)系统的量子演化。我们综合分析了温度、腔模频率和寿命、振动耦合以及泵入腔模的平均光子数对SF动力学的影响。我们揭示了几个新的调节光腔中ci驱动的SF过程的机制,为提高SF效率提供了理论指导。特别是,我们已经证明了控制SF的几个参数的同时变化可以引起非常规但鲁棒的合作效应,这可能有助于在实际系统中控制SF。
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来源期刊
Journal of Chemical Theory and Computation
Journal of Chemical Theory and Computation 化学-物理:原子、分子和化学物理
CiteScore
9.90
自引率
16.40%
发文量
568
审稿时长
1 months
期刊介绍: The Journal of Chemical Theory and Computation invites new and original contributions with the understanding that, if accepted, they will not be published elsewhere. Papers reporting new theories, methodology, and/or important applications in quantum electronic structure, molecular dynamics, and statistical mechanics are appropriate for submission to this Journal. Specific topics include advances in or applications of ab initio quantum mechanics, density functional theory, design and properties of new materials, surface science, Monte Carlo simulations, solvation models, QM/MM calculations, biomolecular structure prediction, and molecular dynamics in the broadest sense including gas-phase dynamics, ab initio dynamics, biomolecular dynamics, and protein folding. The Journal does not consider papers that are straightforward applications of known methods including DFT and molecular dynamics. The Journal favors submissions that include advances in theory or methodology with applications to compelling problems.
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