Correlation between molecular structure, microscopic morphology, and optical 
properties of poly (tetraalkylindenofluorene)s

Grimsdale, Andrew C.; Leclere, P.; Lazzaroni, R.; MacKenzie, J. D.; Murphy, C.; Setayesh, S.; Silva, C.; Friend, R. H.; Müllen, Klaus

doi:10.1002/1616-3028(20021016)12:10<729::AID-ADFM729>3.0.CO;2-F

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Correlation between molecular structure, microscopic morphology, and optical properties of poly (tetraalkylindenofluorene)s

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Grimsdale, Andrew C.
MPI for Polymer Research, Max Planck Society;

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Setayesh, S.
MPI for Polymer Research, Max Planck Society;

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Müllen, Klaus
MPI for Polymer Research, Max Planck Society;

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引用

Grimsdale, A. C., Leclere, P., Lazzaroni, R., MacKenzie, J. D., Murphy, C., Setayesh, S., Silva, C., Friend, R. H., & Müllen, K. (2002). Correlation between molecular structure, microscopic morphology, and optical properties of poly (tetraalkylindenofluorene)s. Advanced Functional Materials, 12(10), 729-733. doi:10.1002/1616-3028(20021016)12:10<729:AID-ADFM729>3.0.CO;2-F.

引用: https://hdl.handle.net/11858/00-001M-0000-000F-64E6-2

要旨

The emission properties of polyindenofluorenes with various proportions of straight- and branched-chain alkyl substituents have been compared. The polymer with straight octyl substituents shows green emission due to formation of aggregates, while the polymer with branched 2-ethylhexyl substituents shows blue emission. Studies of the film morphology show the presence of ordered structures due to pi- stacking of the polymer chains for the octyl-substituted polymer, whereas the polymer with branched side-chains shows no such order. Copolymers show intermediate behavior. A clear correlation is established between the degree of straight-chain alkyl substitution, the formation of ordered structures in the films, and the amount of long wavelength emission in the solid- state spectra.