Single-molecule study of phenylenevinylene oligomers revealed distinct spectral forms due to different conjugation lengths which are determined by torsional defects. Large spectral jumps between different spectral forms were ascribed to torsional flips of a single phenylene ring. These spectral changes reflect the dynamic nature of electron delocalization in oligophenylenevinylenes and enable estimation of the phenylene torsional barriers. © 2012 The Owner Societies.
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors thank Dr Satoshi Habuchi (currently at KAUST, Saudi Arabia) for many helpful discussions. The synthesis was done at Tokyo University of Agriculture and Technology by Kaori Funatsu. This work was supported by a Grant-in-Aid for Scientific Research No. 23651107 of the Japan Society for the Promotion of Science and by a Research Grant of Ogasawara Foundation.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.