螺吡喃基光響應(yīng)催化納米反應(yīng)器的設(shè)計(jì)合成與性能研究

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中圖分類號：TS195.644 文獻(xiàn)標(biāo)志碼：A 文章編號：1673-3851（2025）07-0480-08

引用格式：，等，螺吡喃基光響應(yīng)催化納米反應(yīng)器的設(shè)計(jì)合成與性能研究[J].浙江理工大學(xué)學(xué)報(bào)（自然科學(xué)），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

刺激響應(yīng)材料可通過調(diào)整其物理和化學(xué)性質(zhì)（如顏色、形態(tài)、體積、凝膠/溶膠轉(zhuǎn)變、親水/疏水轉(zhuǎn)變等）來響應(yīng)外部刺激[1]。（剩余10877字）