Spectral multitude and spectral dynamics reflect changing conjugation length in single molecules of oligophenylenevinylenes

Kobayashi, Hiroyuki; Tsuchiya, Kousuke; Ogino, Kenji; Vacha, Martin

Spectral multitude and spectral dynamics reflect changing conjugation length in single molecules of oligophenylenevinylenes

Type

Article

Authors

Kobayashi, Hiroyuki
Tsuchiya, Kousuke
Ogino, Kenji
Vacha, Martin

Date

2012

Abstract

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.

Citation

Kobayashi H, Tsuchiya K, Ogino K, Vacha M (2012) Spectral multitude and spectral dynamics reflect changing conjugation length in single molecules of oligophenylenevinylenes. Physical Chemistry Chemical Physics 14: 10114. Available: http://dx.doi.org/10.1039/c2cp41509g.

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.