#vapochromism

Vapochromism

When materials change color after exposure to molecules of certain gases or vapors, that change is known as vapochromism. The term vapochromism was first used relatively recently, in the late 1980s, to describe the behavior of platinum complexes. Though the mechanisms of vapochromism are not yet well understood, it has been exhibited in several different types of materials such as "organic dyes, metal complexes, metal organic frameworks, and covalent organic frameworks". The primary application of interest for vapochromic materials is in sensors and the detection of dangerous gases.