How Does Auxochrome Differ from Chromophore?

A chromophore gives the dye the property of absorbing different radiations whereas auxochrome imparts it with the property of being colored. ... Auxochromes are molecules which are attached to non ionizing compounds yet retain their ability to ionize and affect the ability of absorbing light when attached to a chromophore.

What are the auxochrome and chromophore?

An auxochrome is a functional group of atoms attached to the chromophore which modifies the ability of the chromophore to absorb light, altering the wavelength or intensity of the absorption.

What is chromophore and auxochrome example?

Effects on chromophore

For example, benzene does not display color as it does not have a chromophore; but nitrobenzene is pale yellow color because of the presence of a nitro group (−NO₂) which acts as a chromophore. But p-hydroxynitrobenzene exhibits a deep yellow color, in which the −OH group acts as an auxochrome.