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Ivan Scheblykin. Portrait.

Ivan Scheblykin

Professor

Ivan Scheblykin. Portrait.

Inhomogeneous Quenching as a Limit of the Correlation Between Fluorescence Polarization and Conformation of Single Molecules

Author

  • Rafael Camacho Dejay
  • Daniel Thomsson
  • Giuseppe Sforazzini
  • Harry L. Anderson
  • Ivan Scheblykin

Summary, in English

The photophysical properties of conjugated polymers (CPs) largely depend on the interactions between the CP and its environment. We present a study of two polymers with identical conjugated backbones, bare and insulated, that showed different fluorescence excitation modulation depth histograms. However, the polarization differences are not related to differences in conformation, as commonly believed, but to the existence of "dark" chromophores in the bare polymer that are statically quenched. This results in inhomogeneous quenching of the polymer chain that breaks the correlation between excitation fluorescence polarization and conjugated polymer chain conformation.

Department/s

  • Chemical Physics
  • NanoLund: Centre for Nanoscience

Publishing year

2013

Language

English

Pages

1053-1058

Publication/Series

The Journal of Physical Chemistry Letters

Volume

4

Issue

6

Document type

Journal article

Publisher

The American Chemical Society (ACS)

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1948-7185