螺吡喃基光响应催化纳米反应器的设计合成与性能研究

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中图分类号：TS195.644 文献标志码：A 文章编号：1673-3851（2025）07-0480-08

引用格式：，等，螺吡喃基光响应催化纳米反应器的设计合成与性能研究[J].浙江理工大学学报（自然科学），2025，53（4）：480-487.

Abstract：To explore the controllable catalytic performance of photoresponse amphiphilic polymerbased catalysts， photoresponse nanoreactor containing chiral proline catalytic sites were designed and synthesized through reversible adition-fragmentation chain transfer （RAFT） polymerization，activated ester functionalization，and self-assembly strategy. The structure and properties of the polymers were characterized by proton nuclear magnetic resonance （ 1HNMR⋅ ，ultraviolet-visible spectroscopy （UVvis），and dynamic light scattering （DLS）. Subsequently，the aldol condensation reaction of benzaldehyde and acetone in water was adopted to evaluate the catalytic activity of the light-responsive nanoreactors under different stimulation conditions. The results show that the polymer nanomicelles were uniformly dispersed and structurally reversible under visible and UV ilumination， demonstrating photoreversible catalytic control behavior. Under visible light， the catalytic yield reached 93% ，while under ultraviolet light，the yield achieved 78% ，both exhibiting good stereoselectivities. The enantiomeric excess（ee）

values exceeded 90% in all cases. This study provides an idea for the design of rate-controlled catalytic nanoreactors.

Key Words： photo-responsiveness； spiropyran； nanoreactor; self-assembly; light-controlled catalysis

0 引言

刺激响应材料可通过调整其物理和化学性质（如颜色、形态、体积、凝胶/溶胶转变、亲水/疏水转变等）来响应外部刺激[1]。（剩余10877字）