苯酚型成青成色剂的活性和结构的关系

本文研究了11个苯酚型成青成色剂的活性和其结构的关系。以T.S.S.(N,N-二乙基对苯二胺硫酸盐)为显影剂,采用外偶法对这些成色剂进行彩色显影,结果证明,其彩色显影动力学符合Elvegard关系式。本研究中,用HMO方法计算了这些成色剂的偶合位置的超离域度S_r^(E)。作为化学活性的表征,研究中发现,此参数能较好地反应成色剂的偶合活性,并发现,成色剂偶合位置的邻位取代基对彩色显影的偶合反应有空间障碍作用。

THE RELATION BETWEEN ACTIVITIES AND STRUCTURES OF THE CYAN COUPLERS OF PHENOLIC TYPE

Using T. S. S. (4-Amino-N, N-Diethylaniline sulfate) as a developing agent, the cyan couplers were developed in the positive film. The photographic data had been shown to fit the Elveg-ard equation. The superdelocalizabilities (S_r^(K)) proposed by Fukui at the coupling sites of these couplers were calculated with HMO method as the chemical activities of the couplers. It has beem found that the S_r^(K) is a good parameter characterizing the chemical activity of the coupler. The o-substituent to the coupling site of the couplerwould have a steric effect on the coupling reaction.