マゼンタ・ピラゾロン・アゾメチン色素の可視光による退色速度
1972 年 35 巻 3 号 p. 168-172
詳細
1972 年 35 巻 3 号 p. 168-172
The light fading rate of magenta dye, 4-aza-(p-diethyl-aminophenyl)-pheny1-3-methyl-pyrazole-5-one, was studied. The dye was prepared by the method of coupling development, and extracted from the reaction product. Then, it was dispersed into a cellulose acetate film.
According with spectral fading of the dye, absorptions of 270 nm and 540 nm contributed to the fading reaction each other, but 440 nm did not.
The kinetic expression of fading rate for 540 nm light was as follows.
-dC/dt= (K/C0)ΔI·C
K: rate constant Co: initial concentration of the dye
I: absorbed light C: concentration of the dye
