Influence of a structured environment on the energy transfer in molecular assemblies: An approach based on Stochastic Schrödinger equations

结构化环境对分子组装中能量转移的影响：基于随机薛定谔方程的方法

• 批准号: 189797246
• 负责人: Dr. Alexander Eisfeld
• 金额: --
• 依托单位: Max-Planck-Institut für Physik komplexer Systeme
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/189797246?language=en
• 关键词: Influence; structured; environment; energy; transfer

The transport of excitation energy in assemblies of molecules plays animportant role in many parts of biology, chemistry and technology.Prominent examples are the photosynthetic complexes or aggregates consistingof organic dyes, which are used in photography or organic solar cells. In such molecular aggregates electronic excitation can be transferred from onemolecule to the other due to resonant dipole-dipole interaction.The character of this transfer is strongly influenced by interactions with thesurroundings: with increasing interaction it changes from a coherentquantum mechanical propagation to a classical diffusion process.In the project we will investigate the influence of a structured environmentwhich possesses a memory, on the character and efficiency of the energy transferin various systems.To take the non-Markovian dynamics due to the memory of the surroundingsproperly into account we apply new approaches from the theory of stochasticSchrödinger equations.With this methods we will investigate the transition from coherent transfer toincoherent Förster hopping. The main focus, however, will be to use tailored environments to manipulate the transport efficiency and to control the direction ofenergy Transfer.

激发能在分子组件中的传输在生物、化学和技术的许多方面都起着重要的作用。最常见的例子是有机染料组成的光合作用复合体或聚集体，用于摄影或有机太阳能电池。在这种分子聚集体中，由于共振偶极-偶极相互作用，电子激发可以从一个分子传递到另一个分子。这种传递的性质受到与环境的相互作用的强烈影响：随着相互作用的增加，它从相干量子力学传播转变为经典的扩散过程。在这个项目中，我们将研究具有记忆的结构化环境对各种系统中能量传递的性质和效率的影响。为了适当地考虑由于环境记忆而产生的非马尔科夫动力学，我们应用随机薛定谔方程的新方法。用这种方法，我们将研究从相干传递到相干Förster跳跃的转变。然而，主要的关注点将是使用定制的环境来操纵运输效率和控制能量转移的方向。

项目成果

Dynamics of a nanoscale rotor driven by single-electron tunneling

• DOI: 10.1209/0295-5075/98/68004
• 发表时间: 2012-06-01
• 期刊: EPL
• 影响因子: 1.8
• 作者: Croy, Alexander;Eisfeld, Alexander
• 通讯作者: Eisfeld, Alexander

Intermolecular torsional motion of a π-aggregated dimer probed by two-dimensional electronic spectroscopy.

二维电子光谱探测π聚集二聚体的分子间扭转运动

• DOI: 10.1063/1.3674993
• 发表时间: 2012
• 期刊: The Journal of chemical physics
• 作者: J. Seibt;A. Eisfeld
• 通讯作者: A. Eisfeld