Iodine-capped emeraldine trimers are synthesized by a modified Sandmeyer reaction. The electronic spectra of the trimers are captured by UV-Vis spectroscopy. The absorption bands are compared to the results of DFT calculations, and the electronic states responsible for those bands assigned. Additional thermodynamic parameters are calculated for the iodine-capped trimers, and compared to those for the traditional amino-capped trimers.
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