Chemistry research aims to prevent glow-in-the-dark pigments from fading

Key facts

• Conservationists are studying phosphorescent and fluorescent pigments to preserve the vibrancy of artworks.
• Research presented at an American Chemical Society meeting indicates humidity significantly impacts phosphorescent pigment breakdown.
• Previous studies found optical brighteners in fluorescent pigments degrade faster than the dyes themselves.
• The research aims to improve storage and exhibition practices for artworks using these materials.
• Future studies will focus on lithopone-containing phosphorescent materials.

Conservationists are investigating the photochemistry of glow-in-the-dark pigments to prevent fading and dulling in artworks, particularly those by designer Stephen Sprouse. Research presented at an American Chemical Society meeting revealed that humidity plays a significant role in the degradation of phosphorescent pigments, alongside light exposure. Previous studies on fluorescent pigments showed that optical brightener compounds break down faster than the dyes, causing colors to appear darker over time. This understanding is crucial for developing better conservation, storage, and exhibition methods for these visually impactful materials. Future research will examine phosphorescent materials containing the white pigment lithopone.