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Citation: Ye Ling, Zhu Qinqin, Wu Shikang. MEASUREMENT OF pK VALUES OF ORTHO-HYDROXY-BENZOPHENONE UV-ABSORBERS[J]. Acta Physico-Chimica Sinica, ;1987, 3(03): 272-277. doi: 10.3866/PKU.WHXB19870310 shu

MEASUREMENT OF pK VALUES OF ORTHO-HYDROXY-BENZOPHENONE UV-ABSORBERS

1.
Institute of Photographic Chemistry; Academia Sinica

Received Date: 17 December 1985
Available Online: 15 June 1987

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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