本工作应用双注法制备了一系列不同碘含量的八面体核壳孔剂。测定了它们的光吸收,离子电导(介电损耗法)、光电导(微波光导法)和感光性能。结果表明:乳剂微晶体的光吸收和离子电导随着碘含量的增加而显著上升,光电导也随着碘含量的增加而增大,其光电子表减过程遵循二级反应动力学过程,光电子半衰期在碘含量为5mol％时为最大。在相同的化学敏化条件下,乳剂的感光度随碘含量增加而上升(碘含量0—12.5mol％)。 In this work, a series of octahedral core-shell agents with different iodine content were prepared by double injection method. Their light absorption, ion conductivity (dielectric loss method), photoconductivity (microwave photoconductivity) and photosensitivity were measured. The results showed that the light absorption and ionic conductivity of the microcrystalline microcapsules increased significantly with the increase of iodine content. The photoconductivity also increased with the increase of iodine content. The photoelectron subtraction process followed the second order kinetics. The half-life is the largest when the iodine content is 5 mol%. Under the same chemosensitization conditions, the sensitivity of the emulsion increased with increasing iodine content (iodine content 0-12.5 mol%).