Chirality induction in platinum-containing polyaryleneethynylenes by exchange from achiral phosphine ligands to P-chiral phosphine ligands
Chirality induction in platinum-containing polyaryleneethynylenes by exchange from achiral phosphine ligands to P-chiral phosphine ligands
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DOI：
10.1016/j.polymer.2022.125576
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发表时间：
2022-12
期刊：
影响因子：
4.6
通讯作者：
Ryo Aoki;T. Horiuchi;Soya Makino;N. Sano;Y. Imai;H. Sogawa;F. Sanda
中科院分区：
文献类型：
--
作者：
Ryo Aoki;T. Horiuchi;Soya Makino;N. Sano;Y. Imai;H. Sogawa;F. Sanda
本研究涉及通过配体交换反应对含铂 (Pt) 亚芳基乙炔基聚合物主链进行手性诱导。主链中含有–(–Ctriple bondC–trans-Pt(PPh3)2–Ctriple bondC–)–部分的光学非活性聚合物与P-手性二膦、(R,R)-BenzP*和(R,R)-QuinoxP*进行配体交换反应，得到含有–(–Ctriple bondC–cis-Pt(P-chiral diphosphine)–Ctriple bondC–)–的光学活性聚合物部分。配体交换聚合物表现出基于共轭主链的CD信号，表明P-手性配体对主链的手性诱导。 QuinoxP* 连接聚合物可能基于 QuinoxP* 部分的转变而发出光致发光。量子力学计算可预测合理的 CD、紫外可见吸收和光致发光光谱。
This study deals with chirality induction to the main chain of platinum (Pt)-containing aryleneethynylene polymers by ligand exchange reactions. The optically inactive polymers containing –(–Ctriple bondC–trans-Pt(PPh3)2–Ctriple bondC–)– moieties in the main chain undergo ligand exchange reactions withP-chiral diphosphines, (R,R)-BenzP* and (R,R)-QuinoxP* to give optically active polymers containing –(–Ctriple bondC–cis-Pt(P-chiral diphosphine)–Ctriple bondC–)– moieties. The ligand-exchanged polymers exhibit CD signals based on the conjugated main chain, indicating chirality induction to the main chain by theP-chiral ligands. The QuinoxP*-ligated polymers emit photoluminescence likely based on the transition from the QuinoxP* moieties. Quantum mechanical calculations predict reasonable CD, UV–vis absorption and photoluminescence spectra.