Leuco dye

Transformation between leuco and colored form of crystal violet lactone, halochromism.

Transformation between leuco and colored form induced by ultraviolet radiation, photochromism.

A leuco dye (from the Greek leukos: white ) is a dye which can switch between two chemical forms; one of which is colorless. Reversible transformations can be caused by heat, light or pH; resulting in examples of thermochromism, photochromism and halochromism respectively. Irreversible transformation typically involve reduction or oxidation. The colorless form is sometimes referred to as the leuco form

单词	Leuco dye
释义	Leuco dye 英语百科 Leuco dye A leuco dye (from the Greek leukos: white ) is a dye which can switch between two chemical forms; one of which is colorless. Reversible transformations can be caused by heat, light or pH; resulting in examples of thermochromism, photochromism and halochromism respectively. Irreversible transformation typically involve reduction or oxidation. The colorless form is sometimes referred to as the leuco form
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