| 单词 | hypochromic effect |
| 释义 | > as lemmashypochromic effect 2. Characterized by or exhibiting a decrease in the extent to which light (usually, ultra-violet radiation) is absorbed; chiefly in hypochromic effect. ΘΚΠ the world > matter > physics > electromagnetic radiation > light > chromatism > [adjective] > ultraviolet > relating to ultraviolet radiation > absorption hyperchromic1939 hypochromic1946 1946 Ann. Rep. Progr. Chem. XLII. 118 For substituents attached to the carbonyl group, the effects are quite different, both λmax. and εmax. being usually decreased (hypso- and hypochromic effects). 1959 Jrnl. Amer. Chem. Soc. 81 6003/1 In general the oxidation of a methylthio group to a methyl sulfone involves a hypsochromic shift of from 10 to 40 mμ... This hypsochromic shift usually is accompanied by a definite hypochromic effect. 1968 M. W. Strickberger Genetics v. 73 The double-stranded form [of DNA] is called hypochromic, and the loose, single-stranded form is called hyperchromic. < as lemmas |
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