Influence of side chain length on the self-assembly of hairy-rod poly(9,9-dialkylfluorene)s in the poor solvent methylcyclohexane

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Influence of side chain length on the self-assembly of hairy-rod poly(9,9-dialkylfluorene)s in the poor solvent methylcyclohexane. / Knaapila, Matti; Dias, F. B.; Garamus, V. M.; Almasy, L.; Torkkeli, M.; Leppanen, K.; Galbrecht, F.; Preis, E.; Burrows, H. D.; Scherf, U.; Monkman, A. P.

In: Macromolecules, Vol. 40, No. 26, 2007, p. 9398-9405.

Research output: Contribution to journalArticle

Harvard

Knaapila, M, Dias, FB, Garamus, VM, Almasy, L, Torkkeli, M, Leppanen, K, Galbrecht, F, Preis, E, Burrows, HD, Scherf, U & Monkman, AP 2007, 'Influence of side chain length on the self-assembly of hairy-rod poly(9,9-dialkylfluorene)s in the poor solvent methylcyclohexane', Macromolecules, vol. 40, no. 26, pp. 9398-9405. https://doi.org/10.1021/ma0715728

APA

Knaapila, M., Dias, F. B., Garamus, V. M., Almasy, L., Torkkeli, M., Leppanen, K., Galbrecht, F., Preis, E., Burrows, H. D., Scherf, U., & Monkman, A. P. (2007). Influence of side chain length on the self-assembly of hairy-rod poly(9,9-dialkylfluorene)s in the poor solvent methylcyclohexane. Macromolecules, 40(26), 9398-9405. https://doi.org/10.1021/ma0715728

CBE

Knaapila M, Dias FB, Garamus VM, Almasy L, Torkkeli M, Leppanen K, Galbrecht F, Preis E, Burrows HD, Scherf U, Monkman AP. 2007. Influence of side chain length on the self-assembly of hairy-rod poly(9,9-dialkylfluorene)s in the poor solvent methylcyclohexane. Macromolecules. 40(26):9398-9405. https://doi.org/10.1021/ma0715728

MLA

Vancouver

Author

Knaapila, Matti ; Dias, F. B. ; Garamus, V. M. ; Almasy, L. ; Torkkeli, M. ; Leppanen, K. ; Galbrecht, F. ; Preis, E. ; Burrows, H. D. ; Scherf, U. ; Monkman, A. P. / Influence of side chain length on the self-assembly of hairy-rod poly(9,9-dialkylfluorene)s in the poor solvent methylcyclohexane. In: Macromolecules. 2007 ; Vol. 40, No. 26. pp. 9398-9405.

RIS

TY - JOUR

T1 - Influence of side chain length on the self-assembly of hairy-rod poly(9,9-dialkylfluorene)s in the poor solvent methylcyclohexane

AU - Knaapila, Matti

AU - Dias, F. B.

AU - Garamus, V. M.

AU - Almasy, L.

AU - Torkkeli, M.

AU - Leppanen, K.

AU - Galbrecht, F.

AU - Preis, E.

AU - Burrows, H. D.

AU - Scherf, U.

AU - Monkman, A. P.

PY - 2007

Y1 - 2007

N2 - We report on the phase behavior of poly(9,9-dihexylfluorene) (PF6), poly(9,9-diheptylfluorene) (PF7), poly(9,9-diocylfluorene) (PF8) poly(9,9-dinonylfluorene) (PF9), and poly(9,9-didecylfluorene) (PF10) in methylcyclohexane (MCH). After a heating-cooling cycle, in the 10-50 mg/mL. concentration range. PF6/ MCH. PF7/MCH. PF8/MCH, and PF9/MCH systems were found to be gel-like, while PF10/MCH appears less viscous. PF6/MCH, PF7/MCH, PF8/MCH, and PF9/MCH form large (10- 100 nm) sheetlike assemblies (thickness of 2-3 nm). The larger length scale Structures of these sheets show an odd-even dependence on the side chain (spacer) length: the PF6 and PF8 sheets are broader and thinner, whereas PF7 and PF9 sheets are thicker with a Putative double layer Structure. PF10 does not follow this sequence, and only part of the polymer is assembled into a sheetlike structure the rest remaining dissolved at the molecular level. PF8/MCH and PF9/MCH mixtures also have lower length scale crystalline structures with an internal period corresponding to the periodicity observed in the solid-state P phase of PF8. Vestiges of crystalline domains are found for PF6 and PF7 but not for PF10. PF7/MCH. PF8/MCH, and PF9/MCH systems contain the conformational isomer C, of those chains observed in the ss phase, while this is not observed with other polymer/MCH systems.

AB - We report on the phase behavior of poly(9,9-dihexylfluorene) (PF6), poly(9,9-diheptylfluorene) (PF7), poly(9,9-diocylfluorene) (PF8) poly(9,9-dinonylfluorene) (PF9), and poly(9,9-didecylfluorene) (PF10) in methylcyclohexane (MCH). After a heating-cooling cycle, in the 10-50 mg/mL. concentration range. PF6/ MCH. PF7/MCH. PF8/MCH, and PF9/MCH systems were found to be gel-like, while PF10/MCH appears less viscous. PF6/MCH, PF7/MCH, PF8/MCH, and PF9/MCH form large (10- 100 nm) sheetlike assemblies (thickness of 2-3 nm). The larger length scale Structures of these sheets show an odd-even dependence on the side chain (spacer) length: the PF6 and PF8 sheets are broader and thinner, whereas PF7 and PF9 sheets are thicker with a Putative double layer Structure. PF10 does not follow this sequence, and only part of the polymer is assembled into a sheetlike structure the rest remaining dissolved at the molecular level. PF8/MCH and PF9/MCH mixtures also have lower length scale crystalline structures with an internal period corresponding to the periodicity observed in the solid-state P phase of PF8. Vestiges of crystalline domains are found for PF6 and PF7 but not for PF10. PF7/MCH. PF8/MCH, and PF9/MCH systems contain the conformational isomer C, of those chains observed in the ss phase, while this is not observed with other polymer/MCH systems.

U2 - 10.1021/ma0715728

DO - 10.1021/ma0715728

M3 - Article

VL - 40

SP - 9398

EP - 9405

JO - Macromolecules

JF - Macromolecules

SN - 0024-9297

IS - 26

ER -