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Synthesis of meso-Azulenylporphyrins

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journal contribution
posted on 17.03.2005, 00:00 by Kei Kurotobi, Atsuhiro Osuka
meso-Azulenylporphyrins 14 were prepared by Suzuki−Miyaura coupling or the Ziegler−Hafner method. 1-Azulenyl and 6-azulenyl groups are indeed acting as electron-donating and electron-accepting substituents toward Zn(II) porphyrin. Fluorescence of Zn(II) porphyrin in the dyads is strongly quenched depending upon substitution position of azulene in order of 2 > 1 > 4 > 3.

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