Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/10455
DC Field | Value | Language |
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dc.contributor.author | Knaapila, M. | - |
dc.contributor.author | Dias, F. B. | - |
dc.contributor.author | Garamus, V. M. | - |
dc.contributor.author | Almásy, L. | - |
dc.contributor.author | Torkkeli, M. | - |
dc.contributor.author | Leppänen, K. | - |
dc.contributor.author | Galbrecht, F. | - |
dc.contributor.author | Preis, E. | - |
dc.contributor.author | Burrows, H. D. | - |
dc.contributor.author | Scherf, U. | - |
dc.contributor.author | Monkman, A. P. | - |
dc.date.accessioned | 2009-07-02T09:05:13Z | - |
dc.date.available | 2009-07-02T09:05:13Z | - |
dc.date.issued | 2007-12-25 | - |
dc.identifier.citation | Macromolecules. 40:26 (2007) 9398-9405 | en_US |
dc.identifier.issn | 0024-9297 | - |
dc.identifier.uri | https://hdl.handle.net/10316/10455 | - |
dc.description.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 β 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 Cβ, of those chains observed in the β phase, while this is not observed with other polymer/MCH systems. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | American Chemical Society | en_US |
dc.rights | openAccess | eng |
dc.title | Influence of Side Chain Length on the Self-Assembly | en_US |
dc.type | article | en_US |
dc.identifier.doi | 10.1021/ma0715728 | - |
uc.controloAutoridade | Sim | - |
item.fulltext | Com Texto completo | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.openairetype | article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry Centre | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.orcid | 0000-0002-4114-9798 | - |
crisitem.author.orcid | 0000-0003-3127-2298 | - |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
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Influence of Side Chain Length on the Self-Assembly.pdf | 197.73 kB | Adobe PDF | View/Open |
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