Chromophore

A chromophore is the part of a molecule responsible for its color. The color arises when a molecule absorbs certain wavelengths of visible light and transmits or reflects others. The chromophore is a region in the molecule where the energy difference between two different molecular orbitals falls within the range of the visible spectrum. Visible light that hits the chromophore can thus be absorbed by exciting an electron from its ground state into an excited state.

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.

Read more about ChromophoreTypes of Chromophore, Auxochrome, Halochromism in Chromophores

Other articles related to "chromophore, chromophores":

Shpolskii Matrix
... host-guest system consisting of guest or impurity chromophore embedded in a crystalline matrix ... inhomogeneously broadened features normally associated with spectra of chromophores in liquids or solids ... Shpolskii matrices are formed when each chromophore neatly replaces one or more molecules in the host crystalline lattice ...
Science - Chemistry- White Pigments and Dyes - Bleach and Bleaching
... Bleaches attack the chromophores, the part of a molecule which absorbs light and causes fabrics to have different colors ... An oxidizing bleach works by breaking the chemical bonds that make up the chromophore ... a different substance that either does not contain a chromophore, or contains a chromophore that does not absorb visible light ...
Blanqueador - How Bleaches Work - Whitening
... and pigments are produced by molecules which contain chromophores, such as beta carotene ... by breaking the chemical bonds that make up the chromophore ... changes the molecule into a different substance that either does not contain a chromophore, or contains a chromophore that does not absorb visible light ...
Phycourobilin
... This chromophore is bound to the phycobiliprotein phycoerythrin, the distal component of the light-harvesting system of cyanobacteria and red algae (phycobilisome) ... This chromophore is always a donor chromophore of phycoerythrins, since their acceptor chromophore is always phycoerythrobilin ...
Halochromism in Chromophores
... This change in structure affects a chromophore in the pH indicator molecule ... This makes the three rings conjugate together to form an extended chromophore absorbing longer wavelength visible light to show a fuchsia color ...