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Two-photon absorption of polyfluorene aggregates stabilized by insulin amyloid fibrils

Piotr Hanczyc (Institutionen för kemi och kemiteknik, Fysikalisk kemi) ; A. Justyniarski ; Desta Antenehe Gedefaw (Institutionen för kemi och kemiteknik, Polymerteknologi) ; M.R. Andersson ; M. Samoc ; Christian Müller (Institutionen för kemi och kemiteknik, Polymerteknologi)
RSC Advances (2046-2069). Vol. 5 (2015), 61, p. 49363-49368.
[Artikel, refereegranskad vetenskaplig]

We report on the photophysical and optical properties of a polyfluorene derivative (PFO) and its binding to the amyloid-forming protein insulin. The complexation is based on weak supramolecular interactions between amyloid fibrils and PFO in dissolved and aggregated forms. In particular, complexes of polyfluorene aggregates display sizeable two-photon absorption when stabilized by insulin fibril nanotemplates. We propose that a two-photon absorption enhancement mechanism is related to the combination of through-bond and through-space interactions of PFO. The findings reported here suggest that polyfluorene aggregates offer good nonlinear absorption properties and can be used as molecular markers for amyloid fibril recognition.



Denna post skapades 2015-06-29. Senast ändrad 2016-01-07.
CPL Pubid: 219052

 

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