Flattened Calixarene-like Cyclic BODIPY Array: A New Photosynthetic Antenna Model

Xian Sheng Ke, Taeyeon Kim, Vincent M. Lynch, Dongho Kim, Jonathan L. Sessler

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)


A cyclic BODIPY array, characterized by a rigid flattened calixarene-like
conformation, acts as a photosynthetic antenna mimic. The system in question, triBODIPY, is a better antenna than the corresponding BF2-free ligand. On the basis of absorption spectral studies and supporting calculations, it is concluded that exciton coupling between the BODIPY subunits occurs readily. TriBODIPY supports a complex with Li+@C60 that bring an antenna-like light absorber into close proximity to an electronic acceptor without the need for linking spacers. As inferred from X-ray diffraction analyses of complexes between triBODIPY and 60, it is inferred that the fullerene complexes are stabilized via convex−concave donor−acceptor interactions. Steady state absorption/fluorescence, time-correlated single photon counting, and transient absorption measurements have allowed a complete characterization of the complexes in both the ground and excited states, including the host−guest recognition features, fluorescence quenching effects, and charge separation/recombination dynamics.
Original languageEnglish
Pages (from-to)13950-13956
Number of pages7
JournalJournal of the American Chemical Society
Issue number39
Publication statusPublished - 2017 Oct 4


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