Conjugated system

A conjugated system is a chain of atoms connected by alternating single and double bonds, which allows electrons to move freely across the entire structure rather than being locked in place. This electron mobility gives conjugated molecules special properties, like the ability to absorb light and produce vibrant colors, which is why many dyes and pigments in nature contain conjugated systems. Think of it like creating a molecular highway where electrons can travel back and forth, making the substance behave quite differently from molecules where electrons are confined to individual bonds.