한국고분자학회:학술대회논문집 (Proceedings of the Polymer Society of Korea Conference)
- 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
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- Pages.228-228
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- 2006
Conjugated Oligomers Combining Fluorene and Thiophene Units : Towards Supramolecular Electronics
- Leclere, Ph. (University of Mons-Hainaut (UMH) Laboratory for Chemistry of Novel Materials) ;
- Surin, M. (University of Mons-Hainaut (UMH) Laboratory for Chemistry of Novel Materials) ;
- Sonar, P. (Max-Planck-Institut fur Polymerforschung (MPI-P)) ;
- Grimsdale, A.C. (Max-Planck-Institut fur Polymerforschung (MPI-P)) ;
- Mllen, K. (Max-Planck-Institut fur Polymerforschung (MPI-P)) ;
- Cavallini, M. (Consiglio Nazional delle Ricerche (CNR) Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)) ;
- Biscarini, F. (Consiglio Nazional delle Ricerche (CNR) Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)) ;
- Lazzaroni, R. (University of Mons-Hainaut (UMH) Laboratory for Chemistry of Novel Materials)
- 발행 : 2006.10.13
초록
Conjugated oligomers, used as models for fluorene-thiophene copolymers, are compared in terms of the microscopic morphology of thin deposits and the optical properties. The AFM images and the solid-state absorption and emission spectra are interpreted in line with the structural data, in terms of the assembly of the conjugated molecules. The compound with a terthiophene central unit and fluorene end-groups shows well-defined monolayer-by-monolayer assembly into micrometer-long strip-like structures, with a crystalline herringbone-type organization within the monolayers. Polarized confocal microscopy indicates a strong orientation of the crystalline domains within the stripes. In contrast, the compound with a terfluorene central unit and thiophene end groups forms no textured aggregates. The difference in behavior between the two compounds most probably originates from their different capability of forming densely-packed assemblies of
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