Question

Why adding auxochrome to chromophore causes red shift?

Answer 1

Effects on chromophore. It increases the color of any organic compound. ... Anauxochrome is known as a compound that produces a bathochromic shift, also known as red shift because it increases the wavelength of absorption, therefore moving closer to infrared light.

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Answer 2

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$\huge\bold\pink{Answer}$

The color that is seen by our eyes is the one not absorbed within a certain wavelength spectrum of visible light. ... In biological molecules that serve to capture or detect light energy, the chromophore is the moiety that causes a conformational change of the molecule when hit by light.