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Ivan Scheblykin. Portrait.

Ivan Scheblykin

Professor

Ivan Scheblykin. Portrait.

Fluorescence of Single Conjugated Chains of MEH-PPV Dispersed in Polymer Matrix : What Do We See in the Microscope?†

Author

  • Mingyi Xie
  • Marina V. Kuzimenkova
  • Per Olof Larsson
  • Yuxi Tian
  • Ivan G. Scheblykin

Summary, in English

It has been a mystery that the detected fluorescence intensity of single MEH-PPV molecules is much lower than expected based on their chain length. In this review, after re-evaluating of the literature data in the light of new specially designed experiments, we present a comprehensive explanation of this issue: The actual size of MEH-PPV molecules at single molecule level is much smaller than expected due to de-aggregation and chain scission, while static quenching ("dark matter") also exists for large molecules, further reducing their brightness. (Figure presented.)

Department/s

  • Chemical Physics
  • Pure and Applied Biochemistry
  • LU Profile Area: Light and Materials
  • LTH Profile Area: Photon Science and Technology
  • LTH Profile Area: Nanoscience and Semiconductor Technology
  • NanoLund: Centre for Nanoscience

Publishing year

2023-10

Language

English

Pages

2536-2544

Publication/Series

Chinese Journal of Chemistry

Volume

41

Issue

19

Document type

Journal article review

Publisher

John Wiley & Sons Inc.

Topic

  • Atom and Molecular Physics and Optics
  • Physical Chemistry (including Surface- and Colloid Chemistry)

Keywords

  • Brightness
  • Fluorescence
  • MEH-PPV
  • Molecular weight
  • Single molecule spectroscopy

Status

Published

ISBN/ISSN/Other

  • ISSN: 1001-604X