Interaction between the Conjugated Polyelectrolyte Poly{1,4-phenylene[9,9-bis(4-phenoxybutylsulfonate)]fluorene-2,7-diyl} Copolymer and the Lecithin Mimic 1-O-(L-Arginyl)
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- 作者：Marí ; a J. Tapia ; Hugh D. Burrows ; Matti Knaapila ; Andrew P. Monkman ; Antonio Arroyo ; Swapna Pradhan ; Ullrich Scherf ; Aurora Pinazo ; Lourdes Pé ; rez ; Carmen Morá ; n
- 刊名：Langmuir
- 出版年：2006
- 出版时间：November 21, 2006
- 年：2006
- 卷：22
- 期：24
- 页码：10170 - 10174
- 全文大小：71K
- 年卷期：v.22,no.24(November 21, 2006)
- ISSN：1520-5827
文摘
In this paper, the interaction between the water-soluble conjugated polyelectrolyte poly{1,4-phenylene[9,9-bis(4-phenoxybutylsulfonate)]fluorene-2,7-diyl} copolymer and the amino acid glyceride conjugate 1-O-(L-arginyl)-2,3-O-dilauroyl-sn-glycerol dichlorohydrate (a mimic for the phospholipid lecithin) has been studied in aqueoussolution by electronic spectroscopy (absorption and fluorescence) and small-angle neutron scattering (SANS). Asignificant increase in the polymer fluorescence and blue shift in its emission are observed on association with thesurfactant. This is suggested to be due to breakup of polymer aggregates. In addition, the spectroscopic and photophysicaldata suggest this is followed by the vesicle to ribbon transition characteristic of this surfactant, leading to incorporationof single chains of the polymer within mixed polymer-surfactant aggregates. Support for this comes from preliminarySANS measurements, from which evidence for polymer dissolution and formation of two-dimensional structures hasbeen obtained.