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A series of sphere-rod shape amphiphiles were designed and synthesized by connecting the rod-like oligofluorenes with different lengths(OF_n) to the different positions of the spherical [60]fullerene(C_(60)) through a rigid linkage. The conjugates were characterized by ~1H-NMR, ~(13)C-NMR, FTIR, EA and MALDI-TOF mass spectrometry. The optical and electronic properties of the conjugates were studied by UV-Vis absorption spectroscopy, fluorescence spectrometry, and cyclic voltammetry. The results from UV-Vis absorption spectroscopy and cyclic voltammetry indicated that the energy profiles of C_(60) and OF_n remained unchanged when different lengths of OF_n were attached to C_(60). The electron affinities of the OF_n-C_(60) conjugates were close to that of C_(60), while slight electronic interaction was found between the two individual chromophores(C_(60) and OF_n) in their ground states. The fluorescence spectra exhibited a complete fluorescence quenching in the toluene solution, suggesting an effective energy transfer from OF_n to C_(60). It presents a systematic study on the selfassembly, structure-property relationship, and potential technical applications of the conjugates.
A series of sphere-rod shape amphiphiles were designed and synthesized by connecting the rod-like oligofluoresnes with different lengths (OF_n) to the different positions of the spherical [60] fullerene (C_ (60)) through a rigid linkage. The conjugates were The optical and electronic properties of the conjugates were studied by UV-Vis absorption spectroscopy, fluorescence spectrometry, and cyclic voltammetry. The results from UV-Vis absorption spectroscopy and cyclic voltammetry indicated that the energy profiles of C_ (60) and OF_n remained unchanged when different lengths of OF_n were attached to C_ (60). The electron affinities of the OF_n-C_ (60) conjugates were close to that of C_ (60), while slight electronic interaction was found between the two individual chromophores (C_ (60) and OF_n) in their ground states. The fluorescence spectra rendered a complete fluorescence quenching in the toluene solution, suggest ing an effective energy transfer from OF_n to C_ (60). It presents a systematic study on the selfassembly, structure-property relationship, and potential technical applications of the conjugates.