Conformational Statistics of Ribbon-like Chains

Conformational Statistics of Ribbon-like Chains
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带状链的构象统计

DOI:
10.1021/acs.macromol.3c01430
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发表时间:
2023
期刊:
影响因子:
5.5
通讯作者:
Qin, Jian
Qin, Jian
中科院分区:
化学1区
文献类型:
--
作者:
Michaels, Wesley;Spakowitz, Andrew J.;Qin, Jian

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共轭聚合物和阶梯聚合物的化学性质使它们的骨架具有各向异性弯曲刚度,从而产生“带状”结构,而现有的统计聚合物模型并不能完全捕捉到这种结构。在这里,我们分析了对蠕虫状链(WLC)模型的推广,称为带状链(RLC)模型,该模型允许这种构象各向异性,并强调了骨干扭转刚度的重要性。求解了自由链格林函数,评价了基本链的构象性质。揭示了各向异性弯曲刚度对切线相关性和正态相关性、旋转半径和瞬时链形的影响。最后讨论了参数化、推广及其在共轭聚合物研究中的应用。
The chemistry of conjugated polymers and ladder polymers endows them with anisotropic bending stiffnesses in their backbones, giving rise to “ribbon-like” structures that the existing statistical polymer models do not fully capture. Here, we analyze a generalization to the worm-like chain (WLC) model, called the ribbon-like chain (RLC) model, which permits such conformational anisotropy and highlights the importance of backbone twisting stiffness. The free-chain Green function is solved, and the basic chain conformational properties are evaluated. The effects of anisotropic bending stiffness on the tangent and normal correlations, the radius of gyration, and the instantaneous chain shape are clearly revealed. Finally, parametrization, extension, and applications in the study of conjugated polymers are discussed.
DOI: --
发表时间: 1997
期刊:
影响因子: --
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