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本文在分析一系列π-π体系电荷转移(CT)双重吸收光谱的基础上,提出一个双重带峰值间的关系式Δhv/hv=αβ,其中α和β是两个无量纲的参数,分别表示受体A和给体D的特性。用此模型计算了约五十种体系的双重光谱数据,并与实测值对比,发现此式能将所收集到的数据关联至偏差在±3%以内。将此模型用于分析硝基芴酮系列与不同给体的CT光谱,求得其最低能带峰值(hv_1)。然后用通常方法求得各受体的电子亲合能(E_A)。但此模型只适用于π-π弱电荷转移复合物的一定体系。
Based on the analysis of a series of double absorption spectra of π-π charge-transfer (CT) system, we propose a double-band relationship Δhv / hv = αβ, where α and β are two dimensionless parameters, Receptor A and donor D properties. Using this model, we calculated double spectral data for about 50 systems and compared it with the measured data. We found that this data correlates the collected data to within ± 3% of the deviation. The model was used to analyze the CT spectra of the nitrofluorenone series and different donors, and the lowest bandgap (hv_1) was obtained. Then the electron affinity (E_A) of each receptor was determined by the usual method. However, this model is only applicable to a certain system of π-π weak charge-transfer complexes.