A series of N-(Alkyl or TMS)-2-pyridinamine ethyl aluminum complex with different substituents were prepared and characterized. When the substituent is n-propyl and n-butyl, the N-(Alkyl or TMS)-2-pyridinamine diethyl aluminum complexes agglomerate at -30 °C. On the contrary, when the substituent is isopropyl and trimethylsilyl, the agglomerate is not easily observed. Compared with the N-(Alkyl or TMS)-2-pyridinamine diethyl aluminum complexes of isopropyl, trimethylsilyl, and isopropyl, the ¹H NMR spectra of the pyridine part of N-(n-propyl)-2-pyridinaminoe diethyl aluminum have three sets of peaks. The extra peak may come from the dimer and trimer. Due to the high tension of the quaternary ring and pyridine's influence on the bonding, pyridine did not participate in the coordination, and the optimized monomer structure determines that the monomer is not a quaternary ring structure. Considering the rapid condensation of the liquid product of N-(n-propyl)-2-pyridinaminoe diethyl aluminum at -30 °C, the existence form of compound 2 at different temperatures was determined by variable temperature NMR and simulated NMR. When the temperature reaches 60 °C, the structure of N-(n-propyl)-2-pyridinaminoe diethyl aluminum is a monomer (a stable structure formed with toluene). At -30 °C, the monomer dissociates from the stable structure formed with toluene, and the dimer increases with it. The thermodynamic properties of ethyl aluminum complexes with different substituents were studied by thermal analysis. It was found that the ethyl aluminum complexes with two substituents, isopropyl and trimethylsilyl and difficult to dimerize, were more volatile. The maximum fluorescence wavelength of the complex is affected by the substituents. The spatial and electronic absorption effects of trimethylsilyl make the fluorescence spectrum of the complex 6 blue shift to 406nm. On the contrary, due to the small steric hindrance of n-Propyl, and the easy bonding between Al-N, the fluorescence spectrum of complex 2 shifts to 464nm.

制备并表征了一系列具有不同取代基的N-（烷基或TMS）-2-吡啶胺乙基铝配合物。当取代基为正丙基和正丁基时，N-（烷基或TMS）-2-吡啶胺二乙基铝络合物在-30°C时发生团聚。相反，当取代基是异丙基和三甲基甲硅烷基时，不容易观察到附聚物。与N-（烷基或TMS）异丙基，三甲基甲硅烷的-2-吡啶胺二乙基铝配合物，和异丙基，所比较的¹N-（正丙基）-2-吡啶氨基氨基二乙基铝的吡啶部分的1 H NMR谱具有三组峰。多余的峰可能来自二聚体和三聚体。由于季环的高张力和吡啶对键合的影响，吡啶不参与配位，优化的单体结构决定了该单体不是季环结构。考虑到N-（正丙基）-2-吡啶氨基氨基二乙基铝的液体产物在-30℃下快速缩合，通过可变温度NMR和模拟NMR确定在不同温度下化合物2的存在形式。当温度达到60°C时，N-（n-丙基）-2-吡啶氨基二乙基铝是单体（由甲苯形成的稳定结构）。在-30°C下，单体从与甲苯形成的稳定结构中解离，二聚体随之增加。通过热分析研究了具有不同取代基的乙基铝配合物的热力学性质。发现具有两个取代基异丙基和三甲基甲硅烷基且难以二聚的乙基铝配合物更易挥发。配合物的最大荧光波长受取代基的影响。三甲基甲硅烷基的空间和电子吸收效应使配合物6的荧光光谱转变为406nm。相反，由于正丙基的空间位阻小，且Al-N之间易于键合，复合物2的荧光光谱移至464nm。