exact-mass spectrometry. This material is highly-fluorescent in solution and, relative to pyrene, strongly absorbing in the near-UV region. Phosphorescence is observed at 77 K and formation of the metastable triplet state has been confirmed by laser flash photolysis. In marked contrast to pyrene, fluorescence from the target compound is not susceptible to self-quenching nor to the presence of dissolved
                                    描述了用于制备 1,4-二(1-
芘基) 
丁二炔的合成路线。目标化合物通过广泛的柱色谱纯化后,已通过核磁共振和精确质谱进行表征。这种材料在溶液中具有很强的荧光性,并且相对于
芘,在近紫外区域有很强的吸收性。在 77 K 下观察到
磷光,并且通过激光闪光光解证实了亚稳态三重态的形成。与
芘形成鲜明对比的是,目标化合物的荧光不易自淬灭,也不易受溶解氧的存在的影响。分子的平均构象已通过分子模型建立。(© Wiley-
VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)