Porphyrin‐Ryleneimide Hybrids: Low‐Bandgap Acceptors in Energy‐Transfer Cassettes |
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| Authors: | Ewelina Janiga Gakhyun Kim Piotr J Chmielewski Tadeusz Lis Dongho Kim Marcin St&#x;pie&#x; |
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| Institution: | Ewelina Janiga,Gakhyun Kim,Piotr J. Chmielewski,Tadeusz Lis,Dongho Kim,Marcin Stępień |
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| Abstract: | Energy‐transfer cassettes consisting of naphthaleneimide‐fused metalloporphyrin acceptors (M=Zn and Pd) and BODIPY donors have been designed and synthesized. These systems have rigid pseudo‐tetrahedral structures with a donor‐acceptor separation of ca. 17.5 Å. Spectroscopic investigations, including femtosecond transient absorption measurements, showed efficient excitation energy transfer (EET) occurring according to the Förster mechanism. Strong fluorescence of the donor units and significant spectral overlap of the donor and acceptor subunits are prerequisites for the efficient EET in these systems. |
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| Keywords: | porphyrins BODIPYs chromophores energy transfer femtosecond spectroscopy |
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