Novel blue emitters were synthesized based on the fullerene fragment corannulene. 1,2- bis(corannulenylethynyl)benzene and 1,4-bis(corannulenylethynyl)benzene were designed, synthesized, and shown to exhibit significant red shifts in their absorption spectra as compared to that of the parent corannulene. Photoluminescence studies show both 1,2- bis(corannulenylethynyl)benzene and 1,4- bis(corannulenylethynyl)benzene gives enhanced blue luminescence compared to the parent corannulene structure. 1,4-bis(corannulenylethynyl)benzene was observed to give intense blue luminescence when excited at 400 nm. DFT and TD-DFT calculations were performed and shown to be consistent with the observed experimental results.
基于
富勒烯片段茱萸
烯合成了新型蓝色发光体。设计、合成了 1,2-双(芫
烯乙炔基)
苯和 1,4-双(芫
烯乙炔基)
苯,与母体芫
烯相比,它们的吸收光谱显示出明显的红色偏移。光致发光研究表明,1,2-双(芫荽
烯乙炔基)
苯和 1,4-双(芫荽
烯乙炔基)
苯的蓝色发光强度都比母体芫荽
烯结构要强。据观察,当在 400 纳米波长处激发时,1,4-双(芫荽
烯乙炔基)
苯会发出强烈的蓝色荧光。研究人员进行了 DFT 和 TD-DFT 计算,结果表明与观察到的实验结果一致。