Chromophore: the light‑absorbing part of a molecule Chromophore A chromophore is the region of a molecule that absorbs specific wavelengths of light and produces colour; it underlies pigments, biological photoreceptors, dyes and many optical ap…
Conjugated system: structure, properties, and applications Conjugated system A conjugated system is an arrangement of connected p-orbitals and delocalized electrons across alternating bonds. This article explains structure, behaviour, examples, and practica…
Sigmatropic reaction A sigmatropic reaction is a concerted pericyclic rearrangement in which a sigma bond migrates across a conjugated pi system, reorganizing connectivity within a single molecule and…
