Exploring metallic and plastic 3D printed photochemical reactors for customizing chemical synthesis

Area of Science:

• Photocatalysis
• Chemical Synthesis
• Sustainable Chemistry

Background:

• Visible light photocatalysis offers sustainable synthetic routes but often requires specialized photoreactors.
• Lack of accessible, customizable photoreactors hinders laboratory-scale application and optimization.
• Developing adaptable reactor designs is crucial for advancing photocatalytic methods.

Purpose of the Study:

• To design and fabricate customizable laboratory photoreactors for visible light photocatalysis.
• To explore reactor designs for parallel experimentation and scale-up synthesis.
• To evaluate the performance and utility of 3D printed photoreactors in organic synthesis.

Main Methods:

• Development of customized laboratory photoreactors with temperature stabilization and adaptable LED light sources.
• Fabrication of parallel experiment reactors using metal laser sintering.
• Manufacturing of scale-up synthesis reactors using fused filament fabrication (plastic 3D printing).

Main Results:

• Both metal and plastic 3D printed reactors demonstrated accurate temperature stabilization suitable for organic synthesis.
• The 3D printed reactors proved effective in test reactions, including furan C-H arylation and thiol-yne coupling.
• Temperature control was found to be critical, as elevated temperatures negated the photochemical effect in furan arylation.

Conclusions:

• 3D printing offers a viable method for creating customized, efficient photoreactors for laboratory use.
• The developed reactors facilitate both parallel screening and scale-up of photocatalytic reactions.
• Precise temperature management is essential for successful visible light photocatalysis, as demonstrated by the furan arylation results.