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研究了４－位苯基取代基旋转受阻和旋转自由的２，４，６－三苯基氧盐的光物理性质。实验结果表明，当４－位苯基取代基旋转受阻时，氧盐化合物在激发态时引起的分子内极化程度比４－位取代基旋转自由的氧盐化合物大，即在激发态时旋转受阻氧盐化合物发生的分子内电荷转移能力较强；４－位取代基旋转自由的化合物的荧光量子产率随溶剂粘度的增大而有所增大，但旋转受阻化合物在相同的条件下则出现相反的结果。实验结果还表明，４－位取代苯基旋转受阻对化合物的荧光发射不利。
The photophysical properties of 2,4,6-triphenyloxonium salt with hindered and spin-free 4-position phenyl substituents were investigated. The experimental results show that when the rotation of the phenyl substituent at the 4-position is hindered, the oxygen atom compound in the excited state will cause more intramolecular polarization than the oxygen-free compound whose 4-position substituent rotates freely, that is, rotate in the excited state The intramolecular charge transfer of hindered oxygen compounds is strong. The fluorescence quantum yield of compounds with 4-position substituents is increased with the increase of solvent viscosity. However, under the same conditions, The opposite result. The experimental results also show that hindered phenyl substituted at the 4-position hinders the fluorescence emission of the compound.