本文研究联苯胺在不同溶剂和不同浓度时的电子吸收光谱.当溶剂从正庚烷改变为二(口恶)烷,乙醇和乙醚时、联苯胺的电子吸收谱带向红移。在不同溶剂和不同浓度下,这红移的大小不同。观察结果表明:联苯胺和所用的极性溶剂形成分子间氢键。根据实验结果提供了联苯胺和所用极性溶剂分子间形成的各种可能的氢键模型. In this paper, we study the electron absorption spectra of benzidine in different solvents and concentrations.When the solvent changes from n-heptane to dioxane, ethanol and ether, the electron absorption band of benzidine shifts to red-shift. In different solvents and different concentrations, the size of the redshift is different. The observations show that benzidine and the polar solvent used form intermolecular hydrogen bonds. Based on the experimental results, various possible hydrogen bonding models for the formation of the benzidine and the polar solvent used are provided.