Palladium‐SCS Pincer Complexes as Cross‐Linking Moieties in Self‐Healing Metallopolymers,Macromolecular Rapid Communications

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Palladium‐SCS Pincer Complexes as Cross‐Linking Moieties in Self‐Healing Metallopolymers
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2018-09-06 , DOI: 10.1002/marc.201800495
Stefan Götz _{1,

2} , Robert Geitner ₃ , Marcus Abend _{1,

2} , Michael Siegmann ₃ , Stefan Zechel _{1,

2} , Jürgen Vitz _{1,

2} , Stefanie Gräfe ₃ , Michael Schmitt ₃ , Jürgen Popp _{2,

3,

4} , Martin D. Hager _{1,

2} , Ulrich S. Schubert _{1,

2}

Affiliation

Metallopolymers combine properties of metal complexes and polymers and are thus interesting materials for a wide field of different applications. One current major field is the utilization as self‐healing polymers, and for this purpose, palladium‐SCS pincer complexes are synthesized. Well‐defined copolymers featuring those metal complexes in the side chain are obtained using the reversible addition–fragmentation chain‐transfer polymerization technique. By the addition of a tetravalent pyridine cross‐linkers, reversible cross‐linked supramolecular networks are prepared, enabling self‐healing properties. By utilizing density functional theory calculations, IR, and Raman spectroscopy, as well as isothermal titration calorimetry, the complex formation, reversibility, and stability are studied. The information of these experiments also enables further optimizations for the design of similar reversible systems in the future.

中文翻译：

钯-SCS钳形配合物作为自修复金属聚合物中的交联部分

金属聚合物兼具金属络合物和聚合物的性能，因此是广泛应用领域中令人感兴趣的材料。当前的一个主要领域是用作自修复聚合物，为此目的，合成了钯-SCS钳形复合物。使用可逆的加成-断裂链转移聚合技术，可以获得在侧链上具有这些金属配合物的良好定义的共聚物。通过添加四价吡啶交联剂，制备了可逆交联的超分子网络，实现了自愈性能。通过利用密度泛函理论计算，IR和拉曼光谱以及等温滴定量热法，研究了络合物的形成，可逆性和稳定性。

更新日期：2018-09-06

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