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用紫外可见吸收光谱、荧光光谱和循环伏安法等方法分别测量了化合物1a-6a在相同条件下的电子吸收光谱、荧光光谱、最大摩尔消光系数(ε)、荧光量子产率(Φf)和LUMO值,并与苝二酰亚胺的相应性质进行了比较。化合物1a-6a的Φf值分别为0.98、0.95、0.91、0.89、0.87、0.91,化合物1a-4a的LUMO值分别为-3.45、-3.51、-3.61、-3.69。在氮原子上引入取代基可以对苝二酰亚胺类衍生物的荧光性质和电化学性质产生影响,影响程度略有差别。
The electron absorption spectra, fluorescence spectra, maximum molar extinction coefficient (ε) and fluorescence quantum yield (Φf) of compound 1a-6a under the same conditions were measured by UV-vis absorption spectra, fluorescence spectra and cyclic voltammetry LUMO values and compared with the corresponding properties of perylene diimides. The Φf values of compounds 1a-6a were 0.98, 0.95, 0.91, 0.89, 0.87 and 0.91, respectively. The LUMO values of compounds 1a-4a were -3.45, -3.51, -3.61 and -3.69, respectively. The introduction of a substituent on the nitrogen atom can affect the fluorescence and the electrochemical properties of the perylenediimide derivatives to a slight extent.