In this paper we describe a semi-empirical quantum method for predicting the wavelength of maximum fluorescence excitation and emission for several known and new maleimide derivatives. All new maleimides, containing a N-Benzyl attachment, were successfully synthesised via a tandem Suzuki reaction with aryl boronic acids containing either an electron donating, electron withdrawing functional groups. Absorption and emission spectra calculated using the semi-empirical AM1 method with excited state ZINDO calculations proved more reliable than either Hartree-Fock Configuration interaction or time dependent density functional methods. Calculated absorption and emission wavelengths were compared with 26 experimental spectra from known or newly synthesised maleimides and found to have provide reasonable predictions, with an average deviation of less the 6% for absorption maxima and less than 4% for emission peaks. The described method provides a strong benchmark for the accuracy that can be expected from theoretical predictions of fluorescence spectra.
                                    本文介绍了一种半经验量子方法,用于预测几种已知和新马来
酰亚胺衍
生物的最大荧光激发和发射波长。所有含有 N-苄基附件的新马来
酰亚胺都是通过与含有供电子或取电子官能团的芳基
硼酸发生串联铃木反应而成功合成的。事实证明,使用半经验 
AM1 方法和激发态 ZINDO 计算得出的吸收和发射光谱比哈特里-福克配置相互作用或时变密度函数方法更可靠。计算得出的吸收和发射波长与已知或新合成的马来
酰亚胺的 26 个实验光谱进行了比较,结果表明,计算结果提供了合理的预测,吸收最大值的平均偏差小于 6%,发射峰的平均偏差小于 4%。所述方法为荧光光谱理论预测的准确性提供了一个强有力的基准。