Acid-Functionalized Artificial Enzymes with Tunable Selectivity for Vinyl Ether Hydrolysis

Area of Science:

• Catalysis
• Nanomaterials Science
• Supramolecular Chemistry

Background:

• Enzymes utilize catalytic groups of varying intrinsic activity for complex catalytic functions.
• Achieving high catalytic efficiency and selectivity often requires sophisticated active site engineering.

Purpose of the Study:

• To engineer nanoparticle catalysts with precisely positioned carboxylic acid groups.
• To control the catalytic selectivity (high or low) of the designed active sites.
• To demonstrate efficient hydrolysis catalysis under mild conditions.

Main Methods:

• Utilized covalent and noncovalent imprinting techniques to position carboxylic acids on nanoparticles.
• Designed rationally engineered active sites on the nanoparticle catalysts.
• Investigated the catalytic activity and selectivity of the nanoparticle catalysts for hydrolysis reactions.

Main Results:

• Successfully synthesized nanoparticle catalysts with accurately positioned carboxylic acids.
• Demonstrated tunable selectivity of the engineered active sites, ranging from highly selective to unselective.
• Achieved smooth hydrolysis in neutral or slightly basic aqueous solutions at room temperature.

Conclusions:

• Nanoparticle catalysts with precisely positioned catalytic groups can effectively address challenging catalytic tasks.
• Imprinting techniques provide a versatile strategy for designing enzyme-mimicking active sites.
• The developed catalysts offer a promising platform for efficient and selective chemical transformations under environmentally benign conditions.