Study of the exciton dynamics in perylene bisimide (PBI) aggregates with symmetrical quasiclassical dynamics based on the Meyer–Miller mapping Hamiltonian
Literature Information
Jie Zheng, Yunze Long, Xin Ning
The exciton dynamics in one-dimensional stacked PBI (Perylene Bisimide) aggregates was studied with SQC-MM dynamics (Symmetrical Quasiclassical Dynamics based on the Meyer–Miller mapping Hamiltonian). Based on linear vibronic coupling models, one-dimensional PBI aggregates with different lengths were investigated. Based on an investigation of short PBI aggregates (10 sites and 80–140 modes) using both the SQC-MM and ML-MCTDH (multilayer multiconfigurational time-dependent Hartree) methods, we showed that SQC-MM dynamics give a reasonable description of the exciton dynamics for organic PBI aggregates composed of 101 sites and 808 modes. This allows us to employ SQC-MM dynamics in the explicit study of exciton diffusion for long one-dimensional PBI aggregates based on models with different site–site coupling strengths with/without static disorder by including all the involved electronic and vibrational degrees of freedom.
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