= Vapochromism
{wiki=Vapochromism}
Vapochromism is a phenomenon where certain materials change color in response to exposure to volatile organic compounds (VOCs) or various vapors. This change in color is typically due to the interaction of the vapors with the chemical structure of the material, which can involve changes in electron configuration or molecular interactions. Vapochromic materials can include certain dyes, polymers, and coordination complexes that exhibit this behavior.
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