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 C₆₀, 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.

中文翻译：

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扁平的杯状类似杯芳烃的环状BODIPY阵列：一种新的光合天线模型

环状BODIPY阵列的特征是刚性扁平的杯状芳烃样构象，可作为光合天线模拟物。所讨论的系统triBODIPY比相应的不含BF _2的配体更好。在吸收光谱研究和支持计算的基础上，得出的结论是BODIPY亚基之间的激子耦合很容易发生。TriBODIPY支持具有Li ⁺ @C ₆₀的复合物，该复合物使类似天线的光吸收剂紧贴电子受体，而无需连接间隔物。从triBODIPY和C ₆₀之间的配合物的X射线衍射分析可知，据推测，富勒烯复合物通过凸-凹的供体-受体相互作用而稳定。稳态吸收/荧光，与时间相关的单光子计数和瞬态吸收测量可对基态和激发态的复合物进行完整表征，包括主体-客体识别特征，荧光猝灭作用以及电荷分离/重组动力学。