An effect of side chain length on the solution structure of poly(9,9-dialkylfluorene)s in toluene
(2008) In Polymer 49(8). p.2033-2038- Abstract
- The effect of side chain length of pi-conjugated poly(9,9-dialkylfluorene)s has been studied in semi-dilute (10 mg/mL) toluene solutions using small-angle neutron scattering (SANS) and H-1 and H-2 NMR spectroscopies. Under these conditions, SANS data indicate that poly(9,9-dinonylfluorene) and poly(9,9-dioctylfluorene) are dissolved down to the molecule level and appear as elongated one-dimensional chains (length >20-30 nm). In contrast, the shorter side chain polymers exhibit a self-association so that poly(9,9-diheptylfluorene) forms thin sheet-like (similar to 1 nm) and poly(9,9-dihexylfluorene) thin (similar to 1 nm) and thick sheet-like (>6 nm) aggregates. H-1 NMR data, together with the density functional theory (DFT)... (More)
- The effect of side chain length of pi-conjugated poly(9,9-dialkylfluorene)s has been studied in semi-dilute (10 mg/mL) toluene solutions using small-angle neutron scattering (SANS) and H-1 and H-2 NMR spectroscopies. Under these conditions, SANS data indicate that poly(9,9-dinonylfluorene) and poly(9,9-dioctylfluorene) are dissolved down to the molecule level and appear as elongated one-dimensional chains (length >20-30 nm). In contrast, the shorter side chain polymers exhibit a self-association so that poly(9,9-diheptylfluorene) forms thin sheet-like (similar to 1 nm) and poly(9,9-dihexylfluorene) thin (similar to 1 nm) and thick sheet-like (>6 nm) aggregates. H-1 NMR data, together with the density functional theory (DFT) calculations, however, show that this occurs without changes in the conformation of the polymer backbone. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1203567
- author
- Knaapila, Matti LU ; Almasy, L ; Garamus, V M ; Ramos, M L ; Justino, L L G ; Galbrecht, F ; Preis, E ; Scherf, U ; Burrows, H D and Monkman, A P
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- conjugated polymers, polyfluorene, solutions
- in
- Polymer
- volume
- 49
- issue
- 8
- pages
- 2033 - 2038
- publisher
- Elsevier
- external identifiers
-
- wos:000255698400007
- scopus:41549159198
- ISSN
- 0032-3861
- DOI
- 10.1016/j.polymer.2008.02.046
- language
- English
- LU publication?
- yes
- id
- db335234-3a51-457a-9f0f-453b36e3c040 (old id 1203567)
- date added to LUP
- 2016-04-01 13:54:42
- date last changed
- 2022-01-27 21:49:17
@article{db335234-3a51-457a-9f0f-453b36e3c040,
abstract = {{The effect of side chain length of pi-conjugated poly(9,9-dialkylfluorene)s has been studied in semi-dilute (10 mg/mL) toluene solutions using small-angle neutron scattering (SANS) and H-1 and H-2 NMR spectroscopies. Under these conditions, SANS data indicate that poly(9,9-dinonylfluorene) and poly(9,9-dioctylfluorene) are dissolved down to the molecule level and appear as elongated one-dimensional chains (length >20-30 nm). In contrast, the shorter side chain polymers exhibit a self-association so that poly(9,9-diheptylfluorene) forms thin sheet-like (similar to 1 nm) and poly(9,9-dihexylfluorene) thin (similar to 1 nm) and thick sheet-like (>6 nm) aggregates. H-1 NMR data, together with the density functional theory (DFT) calculations, however, show that this occurs without changes in the conformation of the polymer backbone.}},
author = {{Knaapila, Matti and Almasy, L and Garamus, V M and Ramos, M L and Justino, L L G and Galbrecht, F and Preis, E and Scherf, U and Burrows, H D and Monkman, A P}},
issn = {{0032-3861}},
keywords = {{conjugated polymers; polyfluorene; solutions}},
language = {{eng}},
number = {{8}},
pages = {{2033--2038}},
publisher = {{Elsevier}},
series = {{Polymer}},
title = {{An effect of side chain length on the solution structure of poly(9,9-dialkylfluorene)s in toluene}},
url = {{http://dx.doi.org/10.1016/j.polymer.2008.02.046}},
doi = {{10.1016/j.polymer.2008.02.046}},
volume = {{49}},
year = {{2008}},
}