However, heating the crystal to 180°C drove the naphthalene out, restoring the crystal to its original greenish-blue color, proving the process is reversible and reusable.

This crystal is capable of reacting with naphthalene to produce a reversible color shift, from greenish-blue to red-violet. Such color-changing crystals can have various potential applications in ...

Compound one co-crystallized in a 1:1 ratio with naphthalene. The resulting crystals exhibited a dramatic color change, shifting from greenish-blue to red-violet.

Compound one co-crystallized in a 1:1 ratio with naphthalene. The resulting crystals exhibited a dramatic color change, shifting from greenish-blue to red-violet.