Counting Chromophores in Conjugated Polymers (pages 1520–1525)
Florian Schindler, Josemon Jacob, Andrew C. Grimsdale, Ullrich Scherf, Klaus Müllen, John M. Lupton and Jochen Feldmann
Article first published online: 31 JAN 2005 | DOI: 10.1002/anie.200461784
The emitting species in conjugated polymers have been studied by single-molecule spectroscopy (see picture). The number of emissive centers (chromophores) varies as a function of molecular weight and chain length. A large ladder-type undecaphenylene was used as a molecular ruler to estimate the size of chromophores in the polymer and to enable a direct assessment of the polymeric conjugation length.