Optical properties of Frenkel exciton in crystalline thin films of π-conjugated polymers

π共轭聚合物晶体薄膜中弗兰克尔激子的光学性质

• 批准号: 21740233
• 负责人: KOBAYASHI Takashi
• 金额: $ 2.83万
• 依托单位: Osaka Prefecture University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21740233/
• 关键词: 高分子構造・物性; 物性実験; π共役系高分子; 光物性; フレンケル励起子

The excited-state structure of crystalline thin films of π conjugated polymers has been studied, with a focus on the effect of interchain interaction. While there was no direct evidence indicating interchain interaction in crystalline thin films with relatively large interchain distances, it was found that the dipole forbidden states as well as dipole allowed ones are equally redshifted in crystalline thin films with a shorter interchain distance. In this work, the nature of the interchain interaction is investigated and its origin is also discussed.

研究了π共轭聚合物结晶薄膜的激发态结构，重点研究了链间相互作用的影响。虽然没有直接证据表明在链间距较大的晶体薄膜中存在链间相互作用，但在链间距较小的晶体薄膜中，偶极禁戒态和偶极允许态都同样红移。在这项工作中，研究了链间相互作用的性质，并讨论了它的起源。