@misc{knaapila_influence_of_2007, 
author={Knaapila, M., Dias, F.B., Haramus, V., Almasy, L., Torkkeli, M., Leppaenen, K., Galbrecht, F., Preis, E., Burrows, H.D., Scherf, U., Monkman, A.P.},
title={Influence of Side Chain Length on the Self-Assembly of Hairy-Rod Poly(9,9-dialkylfluorene)s in the Poor Solvent Methylcyclohexane},
year={2007},
howpublished = {journal article},
doi = {https://doi.org/10.1021/ma0715728},
abstract = {We report on the phase behavior of poly(9,9-dihexylfluorene) (PF6), poly(9,9-diheptylfluorene) (PF7), poly(9,9-dioctylfluorene) (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  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  phase, while this is not observed with other polymer/MCH systems.},
note = {Online available at: \url{https://doi.org/10.1021/ma0715728} (DOI). Knaapila, M.; Dias, F.; Haramus, V.; Almasy, L.; Torkkeli, M.; Leppaenen, K.; Galbrecht, F.; Preis, E.; Burrows, H.; Scherf, U.; Monkman, A.: Influence of Side Chain Length on the Self-Assembly of Hairy-Rod Poly(9,9-dialkylfluorene)s in the Poor Solvent Methylcyclohexane. Macromolecules. 2007. vol. 40, no. 26, 9398-9405. DOI: 10.1021/ma0715728}}