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首页> 外文会议>Internation Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures >The Influence of Interchain Coupling on Intramolecular Oscillation Mobility in Coupled Macromolecular Chains: The case of Coplanar Parallel Chains
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The Influence of Interchain Coupling on Intramolecular Oscillation Mobility in Coupled Macromolecular Chains: The case of Coplanar Parallel Chains

机译：中间链耦合对偶联高分子链中分子内振荡迁移率的影响：共面平行链的情况

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We enlarge our results from the study of the hopping mechanism of the oscillation excitation transport in ID model of one biologica-likel macromolecular chain to the case of a system composed from two ID parallel macromolecular chains with consideration of the properties of intramolecular oscillation excitations. We suppose, that due to the exciton interaction with thermal oscillation (generated by mechanical phonon subsystem) of structural elements (consisting of the peptide group) of the chains, the exciton becomes by self trapped and forms the polaron state. We suggest a model which generalizes the modified Holstein polaron model to the case of two macromolecular chains and find that because of the interchain coupling, the exciton energy band is splitted into two subbands. The hopping process of exciton migration along the macromolecular chains is studied in dependence of system parameters and temperature. We pay an special attention to the temperature range (near T = 300 K) in which living cells operate. It is found that for the certain values of the system parameters there exists the abrupt change of the exciton migration nature from practically free (light) exciton motion to an immobile (heavy, dressed by phonon cloud) quasiparticle We discuss an application of the obtained results to the exciton transport both within deoxyribonucleic acid molecule and in the 2D polymer films organized from such macromolecular chains.
机译：我们通过研究了一种生物淋巴化型大分子链ID模型的跳跃机制的研究结果，以考虑分子内振荡激励的性质，从两个ID平行大分子链组成的系统的情况下的振荡激发型升高型的跳跃机制。我们假设，由于链子的激子相互作用与链条的结构元件（由机械声子子系统产生）的热振荡（由肽基团组成），激子变为自捕获并形成极化子状态。我们建议将修改的Holstein PolarOn模型推广到两个大分子链的情况下概括的模型，并发现由于插入耦合，激子能量带分成两个子带。根据系统参数和温度研究了沿大分子链的激子迁移的跳跃过程。我们特别关注生物细胞运作的温度范围（接近T = 300 k）。结果发现，对于系统参数的某些值，存在于实际自由（Light）激动的激子迁移性质的突然变化，从实际（灯）到一个固定（重，穿着的声子云）Quasiparticle我们讨论了所获得的结果的应用在脱氧核糖核酸分子中和由来自这种大分子链组织的2D聚合物膜中的激子运输。

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