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)-2,3-O-dilauroyl-sn-glycerol in aqueous solution.

doi:10.1021/LA0612217

Paper

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)-2,3-O-dilauroyl-sn-glycerol in aqueous solution.

Published Nov 21, 2006 · M. J. Tapia, H. Burrows, M. Knaapila

Langmuir : the ACS journal of surfaces and colloids

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23

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Abstract

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 aqueous solution by electronic spectroscopy (absorption and fluorescence) and small-angle neutron scattering (SANS). A significant increase in the polymer fluorescence and blue shift in its emission are observed on association with the surfactant. This is suggested to be due to breakup of polymer aggregates. In addition, the spectroscopic and photophysical data suggest this is followed by the vesicle to ribbon transition characteristic of this surfactant, leading to incorporation of single chains of the polymer within mixed polymer-surfactant aggregates. Support for this comes from preliminary SANS measurements, from which evidence for polymer dissolution and formation of two-dimensional structures has been obtained.

In Vitro Study

Study Snapshot

The interaction between poly1,4-phenylene[9,9-bis(4-phenoxybutylsulfonate)]fluorene-2,7-diyl copolymer and lecithin mimic 1-O-(l-arginyl)-2,3-

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

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Paper

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)-2,3-O-dilauroyl-sn-glycerol in aqueous solution.

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References

Citations

Photophysical Identification of Three Kinds of Low-Energy Green Band Defects in Wide-Bandgap Polyfluorenes.

Three types of low-energy green band defects in polyfluorenes contribute to the undesired green emission in blue-light-emitting semiconductors, aiding in the development of stable, pure blue organic light-emitting diodes.

Highly Emissive, Water‐Repellent, Soft Materials: Hydrophobic Wrapping and Fluorescent Plasticizing of Conjugated Polyelectrolyte via Electrostatic Self‐Assembly

SPDPA-OXMYAB complexes, when electrostatically self-assembled, produce highly emissive, water-repellent, and soft materials with potential applications in various fields, including fluorescent papers and paper currency.

What conjugated polyelectrolytes tell us about aggregation in polyelectrolyte/surfactant systems

Conjugated polyelectrolytes form aggregates in water, which can be broken up by co-solvents or surfactants, affecting fluorescence enhancement and quenching.

Fluorescence Response of Conjugated Polyelectrolyte in an Immiscible Two-Phase System via Nonelectrostatic Interaction with Surfactants.

Conjugated polyelectrolyte films show unique fluorescence response and diverse applications when exposed to appropriate surfactants in an immiscible two-phase system, enhancing their properties for microcontact and inkjet printing.

Microporous Conjugated Polymers with Enhanced Emission in Immiscible Two‐Phase System in Response to Surfactants

Microporous conjugated polymers with enhanced emission in imiscible two-phase systems show potential for applications in biosensors and biosensors.