Heterobimetallic Pt(II)/Cu(II) single-chain polymer nanoparticles (SCNPs) were sequentially synthesized from a polymeric precursor featuring both α-diazo-β-ketoester and naked β-ketoester functional groups. Photoactivated carbene generation at λ_exc = 365 nm from α-diazo-β-ketoester moieities was triggered for bonding Pt(II) ions from dichloro(1,5-cyclooctadiene)Pt(II) to the polymeric precursor, whereas Cu(II) ions were subsequently incorporated via Cu(II)-(β-ketoester)₂ complex formation using Cu(II) acetate. Both intrachain Pt(II) bonding and Cu(II) complexation were found to contribute to the folding of the polymeric precursor generating Pt(II)/Cu(II)-SCNPs as evidenced by infrared spectroscopy, size exclusion chromatography and dynamic light scattering. These heterobimetallic SCNPs proved highly efficient as soft nanocatalysts for the consecutive one-pot alkyne semihydrogenation/alkene dioxygenation reactions at room temperature in N-butylpyrrolidone, as a non-toxic alternative solvent to N,N-dimethylformamide.

中文翻译：

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Pt(II)/Cu(II)单链纳米粒子在绿色溶剂中连续一锅炔烃半加氢/烯烃双加氧反应

异双金属Pt( II )/Cu( II )单链聚合物纳米粒子(SCNPs)是由具有α-重氮-β-酮酯和裸露β-酮酯官能团的聚合物前体顺序合成的。α-重氮-β-酮酯部分在λ _exc = 365 nm 处产生光活化卡宾，将二氯(1,5-环辛二烯)Pt( II ) 中的 Pt( II ) 离子键合到聚合物前体上，而 Cu( II )随后使用醋酸铜(Cu( II ))通过形成Cu( II )-(β-酮酯) ₂络合物来掺入离子。红外光谱、尺寸排阻色谱和动态光散射证明，链内 Pt( II ) 键合和 Cu( II ) 络合都有助于聚合前体生成Pt(II)/Cu(II)-SCNP 的折叠。这些异双金属 SCNP 被证明作为软纳米催化剂非常有效，可在室温下在N-丁基吡咯烷酮中连续进行一锅炔烃半氢化/烯烃二氧化反应，作为N , N-二甲基甲酰胺的无毒替代溶剂。