title: Synthesis and electrochemical properties of porphycene-diketopyrrolopyrrole conjugates.
abstract: The selective iodination of 2,7,12,17-tetrahexylporphycene 1 was successfully accomplished by using N-iodosuccinimide in the presence of activators to give 3-iodoporphycene 2 and 3,13-diiodoporphycene 3a. These iodinated porphycenes can be used as the substrates for palladium-catalyzed coupling to prepare porphycene-diketopyrrolopyrrole conjugates in two steps. The connection of the diketopyrrolopyrrole units to porphycenes broadened their absorption spectra and increased the intensity of the Q-bands due to the electronic interactions between the porphycene and diketopyrrolopyrrole moieties.
authors.affiliation: Graduate School of Materials Science, Nara Institute of Science and Technology , 8916-5, Takayama-cho, Ikoma 630-0192, Japan.
authors.forename: Takuya
authors.initials: T
authors.lastname: Okabe
authors.forename: Daiki
authors.initials: D
authors.lastname: Kuzuhara
authors.forename: Mitsuharu
authors.initials: M
authors.lastname: Suzuki
authors.forename: Naoki
authors.initials: N
authors.lastname: Aratani
authors.forename: Hiroko
authors.initials: H
authors.lastname: Yamada