Proceedings of the Polymer Society of Korea Conference (한국고분자학회:학술대회논문집)
- 2006.10a
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- Pages.236-236
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- 2006
Origin of Green Emission in Extremely Pure Oligofluorene Films: Effect of Molecular Packing
- Kang, Ji-Hoon (Department of Chemistry, Seoul National University) ;
- Shin, Na-Yool (Department of Chemistry, Seoul National University) ;
- Jo Jung-Ho (Department of Chemistry, Seoul National University) ;
- Keivanidis Panagiotis E. (Max-Planck-Institute for Polymer Research) ;
- Laquai Frederic (Max-Planck-Institute for Polymer Research) ;
- Wegner Gerhard (Max-Planck-Institute for Polymer Research) ;
- Yoon, Do-Y. (Department of Chemistry, Seoul National University)
- Published : 2006.10.13
Abstract
Time-resolved photoluminescence spectroscopy measurements of oligofluorenes with various side chains were studied. With extremely pure oligofluorenes, two kinds of red-shifted green emission were observed which have different origins; aggregate formation and on-chain chemical defect. The green emission around 490 nm was largely dependent upon the intermolecular interaction of oliglfuorene molecules. Moreover, by using oligofluorene with high-order liquid crystalline phase, we observed that the green emission was strongly dependent upon the molecular packing in solid films.
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