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| 邻羟基二苯甲酮类紫外吸收剂离解常数的测定 | |
| 引用本文： | 叶玲,朱琴琴,吴世康. 邻羟基二苯甲酮类紫外吸收剂离解常数的测定[J]. 物理化学学报, 1987, 3(3): 272-277. DOI: 10.3866/PKU.WHXB19870310 |
| 作者姓名： | 叶玲 朱琴琴 吴世康 |
| 作者单位： | Institute of Photographic Chemistry; Academia Sinica |
| 摘 要： | 本工作对两种常见的商品紫外吸收剂——2-羟基-4-甲氧基二苯甲酮(UV-9)和2,4-二羟基二苯甲酮(UV-0)在基态和激发态时的离解常数进行了测定。对UV-0存在着反常的吸收强度和pH关系曲线作了合理的解释, 并结合测得的离解常数对上述紫外吸收剂耗失能量的机理进行了讨论。 |
| 收稿时间： | 1985-12-17 |
| 修稿时间： | 1986-07-08 |
MEASUREMENT OF pK VALUES OF ORTHO-HYDROXY-BENZOPHENONE UV-ABSORBERS |
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| Ye Ling,Zhu Qinqin,Wu Shikang. MEASUREMENT OF pK VALUES OF ORTHO-HYDROXY-BENZOPHENONE UV-ABSORBERS[J]. Acta Physico-Chimica Sinica, 1987, 3(3): 272-277. DOI: 10.3866/PKU.WHXB19870310 | |
| Authors: | Ye Ling Zhu Qinqin Wu Shikang |
| Affiliation: | Institute of Photographic Chemistry; Academia Sinica |
| Abstract: | In this paper the pK values of both commonly commercial UV-absorbers-2-hydroxy-4-methoxy-benzophenone (UV-9) and 2,4-dihydroxy-benzophenone (UV-0) at ground and excited states have been determined. The unusual relation curve between absorption intensity and pH value for UV-0 was explained reasonablely. The energy-loss mechanism of UV-absorbers described above has been discussed by means of the pK values which were obtained in this work. |
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