Fotocromismo del espiropirano

Spiropyran (colorless) → Merocyanine (colored)

Descripción general

UV light causes the C–O bond in spiropyran to break, opening the ring to form the planar, conjugated merocyanine isomer that absorbs visible light and appears colored. Visible light or heat reverses the reaction. This reversible photochromism is the basis for smart materials that change color in response to light.

Ejemplo cotidiano

Photochromic sunglasses (Transitions lenses) that darken in sunlight use similar photochromic molecules that reversibly change structure.

Importancia industrial

Aplicado en lentes fotocromáticos, tinta inteligente, almacenamiento óptico de datos y sensores moleculares.

Preguntas frecuentes

What is the equation for Fotocromismo del espiropirano?
The balanced equation is: Spiropyran (colorless) → Merocyanine (colored).
What type of reaction is Fotocromismo del espiropirano?
Fotocromismo del espiropirano is a fotoquímica reaction. It is reversible under certain conditions.
Is Fotocromismo del espiropirano exothermic or endothermic?
Fotocromismo del espiropirano is endothermic (absorbs energy).