期刊
JOURNAL OF CHEMICAL PHYSICS
卷 130, 期 4, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3065267
关键词
excitons; long-range order; molecular electronics; polymers
资金
- European Commission (EC) [MRTN-CT-2006-035884, NMP-CT-2006-016434]
- Spanish Ministry for Science and Education
- Belgian National Science Foundation [2.4560.00]
- Belgian Federal Science Policy Office
- FRIA (Fonds pour la Formation la Recherche dans l'Industrie et dans l'Agriculture)
We demonstrate that for a range of phenylene- and thiophene-based conjugated polymers of practical relevance for optoelectronic applications, exciton couplings in one-dimensional stacks deviate significantly from the nearest neighbor approximation. Instead, long-range interactions with non-nearest neighbors have to be included, which become increasingly important with growing oligomer size. While the exciton coupling vanishes for infinitely long ideal polymer chains and provides a sensitive measure of the actual conjugation length, the electronic coupling mediating charge transport shows rapid convergence with molecular size. Similar results have been obtained for very different molecular backbones, thus highlighting the general character of these findings.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据