Large spectral diffusion of conjugated polymer single molecule fluorescence at low temperature

Oleg Mirzov, Tönu Pullerits, F Cichos, C von Borczyskowski, Ivan Scheblykin

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

22 Citeringar (SciVal)


The conductive polymer poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4- phenylene vinylene) (MEH-PPV) was investigated by means of single molecule spectroscopy at 15 K. MEH-PPV single chains were deposited onto a surface from a toluene solution and covered with a polymer cap layer spin-coated from an aqueous solution for protection from air. The MEH-PPV molecules exhibited large fluorescence spectral diffusion with the range reaching 1000 cm(-1). We concluded that conformational changes, affecting dispersive interactions and conjugation length, is the most probable mechanism of the observed effect. It is the matrix-free environment that allows the MEH-PPV chains to undergo sufficiently large conformational changes even at low temperature. (c) 2005 Elsevier B.V. All rights reserved.
Sidor (från-till)317-321
TidskriftChemical Physics Letters
StatusPublished - 2005

Bibliografisk information

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Chemical Physics (S) (011001060)

Ämnesklassifikation (UKÄ)

  • Atom- och molekylfysik och optik


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