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Effects of commercial non-ionic alkyl oxyethylene and ionic biocompatible arginine-based surfactants on the photophysical behaviour of several poly(fluorene-1,4-phenylene)s
- Source :
-
Journal of Molecular Liquids . Sep2010, Vol. 156 Issue 1, p18-27. 10p. - Publication Year :
- 2010
-
Abstract
- Abstract: In this paper, the interaction between three water soluble conjugated polymers: sodium poly{9,9-bis[(4-butylsulfonate)phenoxy]-2,7-fluorene-alt-1,4-phenylene} (PBS-PFP), poly{9,9-bis[(6′-N,N,N-trimethylammonium) hexyl]-2,7-fluorene-alt-1,4-phenylene} dibromide (HTMA-PFP) and poly{9,9′-bis[(6″-N-acetyltyrosine)hexyl]-2,7-fluorene-alt-1,4-phenylene}, (Tyr–PFP) with neutral and charged surfactants has been studied. The optical spectroscopic properties of the three polymers in aqueous solution (PBS-PFP) and in DMSO–water mixtures (4% v/v, HTMA-PFP and Tyr–PFP) are also presented. Three different biocompatible surfactants were used: a single chain one, N α -lauroyl-l-arginine methyl ester hydrochloride (LAM), a gemini compound, N α ,N ω -bis(N α lauroylarginine) α, ω-dibutylamide dihydrochloride, (C4(LA)2) and an amino acid glyceride conjugate, 1-O-(l-arginyl)-2,3-O-di-lauroyl-sn-glycerol dichlorhydrate (1212R). In addition, the interaction of the same polymers with three commonly used commercial non-ionic surfactants: n-dodecyl pentaoxyethylene glycol ether (C12E5), 4-(1,1,3,3-tetramethylbutyl)phenyl-polyethylene glycol (Triton X-100) and polyethylene glycol sorbitan monolaurate (Tween 20) was also studied. Electronic spectroscopy (absorption and steady-state emission) as well as molecular dynamics using the Gromacs package (for the interaction between HTMA-PFP and Triton X-100) and ionic conductivity measurements on HTMA-PFP/C12E5 are also reported. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01677322
- Volume :
- 156
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Molecular Liquids
- Publication Type :
- Academic Journal
- Accession number :
- 53405156
- Full Text :
- https://doi.org/10.1016/j.molliq.2010.05.026