Fate of Excitations in Conjugated Polymers: Single-Molecule Spectroscopy Reveals Nonemissive "Dark" Regions in MEH-PPV Individual Chains.

Hongzhen Lin, Yuxi Tian, Karolina Zapadka, Gustav Persson, Daniel Thomsson, Oleg Mirzov, Per-Olof Larsson, Jerker Widengren, Ivan Scheblykin

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

59 Citeringar (SciVal)

Sammanfattning

Single chains of the conjugated polymer MEH-PPV (poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene)) were studied with wide-field fluorescence microscopy (dispersion in inert polymer matrices) and with fluorescence correlation spectroscopy (chloroform solution). The fluorescence yield of individual molecules in matrices was found to be 1-2 orders of magnitude lower than that in solution and it decreased substantially with increasing chain length. It suggests that isolation of MEH-PPV molecules in polymer matrices creates favorable conditions for photogeneration of nonemissive primary excited states.
Originalspråkengelska
Sidor (från-till)4456-4461
TidskriftNano Letters
Volym9
DOI
StatusPublished - 2009

Bibliografisk information

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Pure and Applied Biochemistry (LTH) (011001005), Chemical Physics (S) (011001060)

Ämnesklassifikation (UKÄ)

  • Nanoteknik

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