Design, synthesis, and optical/electronic properties of a series of sphere-rod shape amphiphiles based on the C sub(60)-oligofluorene conjugates

• Published in: Chinese journal of polymer science Vol. 35; no. 4; pp. 503 - 514
• Main Authors: Teng, Fu-ai, Liu, Feng-li, Han, Lu, Zhu, Zheng-ju, Zhang, Yi-fang, Wu, Zhi-jin, Han, Zhe-wen, Zhang, Wen-bin, Li, Hui
• Format: Journal Article
• Language: English
• Published: 01.04.2017
• Subjects: Absorption spectroscopy; Buckminsterfullerene; Conjugates; Fluorescence; Fullerenes; Self assembly; Synthesis; Voltammetry
• ISSN: 0256-7679; 1439-6203
• DOI: 10.1007/s10118-017-1899-4

A series of sphere-rod shape amphiphiles were designed and synthesized by connecting the rod-like oligofluorenes with different lengths (OF sub()n to the different positions of the spherical [60]fullerene (C sub(60)) through a rigid linkage. The conjugates were characterized by super(1) H-NMR, super(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 sub(60) and OF sub()nremained unchanged when different lengths of OF sub()nwere attached to C sub(60). The electron affinities of the OF sub()nC sub(60) conjugates were close to that of C sub(60), while slight electronic interaction was found between the two individual chromophores (C sub(60) and OF sub()n in their ground states. The fluorescence spectra exhibited a complete fluorescence quenching in the toluene solution, suggesting an effective energy transfer from OF sub()nto C sub(60). It presents a systematic study on the self-assembly, structure-property relationship, and potential technical applications of the conjugates.