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A series of novel dendritic carbazole‐based porphyrins [T(Cz‐Gn)Ps] have been synthesized by a combination of Ullmann coupling and Adler condensation reactions and their intramolecular energy‐transfer properties have been studied by absorption and steady‐state fluorescence spectroscopy. It has been found that the light‐harvesting capabilities of T(Cz‐Gn)Ps increase with increasing generation, but that the efficiency of the energy transfer decreases from T(Cz‐G0)P to T(Cz‐G2)P due to the Förster energy‐transfer process. In addition, these dendritic macromolecules can emit intense red light with high fluorescence quantum yields and so may find applications in photonic devices. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)
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Xu et al. (2006) studied this question.
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