Details

Autor(en) / Beteiligte

• Chen, Yu-Chien
• Huang, Xing-Fu
• Hsu, Huei-Ting
• Wu, Er-Ting
• Peng, Chi-How
• Huang, Michael H

Titel

Photocatalyzed dimethylacrylamide polymerization in an aqueous solution using 4-nitrophenylacetylene-modified CuO crystals

Ist Teil von

• Journal of materials chemistry. A, Materials for energy and sustainability, 2024-06, Vol.12 (24), p.14792-148

Erscheinungsjahr

2024

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Cu 2 O cubes, octahedra, and rhombic dodecahedra with and without surface 4-nitrophenylacetylene (4-NA) functionalization were used to catalyze dimethylacrylamide (DMA) photopolymerization in water. Among these samples, the 4-NA-modified Cu 2 O cubes presented a highest monomer conversion percentage of 69% after 1 h of 420 nm light irradiation, possibly due to the most efficient electron transfer from the particles to the Ph 2 ICl co-initiator. The synthesized polymers generally have high molecular weights and good dispersity values. The reaction can be easily scaled up 10 fold under room light. After simple particle removal, a transparent gel-like polymer product is obtained. The Cu 2 O crystals can be recycled for use in more polymerization reactions. Electron and hole scavenging experiments were conducted to support the proposed reaction mechanism. This work shows surface-controlled semiconductor nanocrystals can be simple yet highly effective photocatalysts for some polymerization reactions. 4-Nitrophenylacetylene-functionalized Cu 2 O polyhedra can readily photocatalyze dimethylacrylamide polymerization in water. The orange gel becomes transparent after particle removal.