Surrounding Interactions on Phase Transition Temperature Promoted by Organometallic Complexes in Functionalized Poly(N‐isopropylacrylamide‐co‐dopamine methacrylamide) Copolymers,Macromolecular Chemistry and Physics

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Surrounding Interactions on Phase Transition Temperature Promoted by Organometallic Complexes in Functionalized Poly(N‐isopropylacrylamide‐co‐dopamine methacrylamide) Copolymers
Macromolecular Chemistry and Physics ( IF 2.5 ) Pub Date : 2020-04-03 , DOI: 10.1002/macp.202000035
Yu Wang ₁ , Alberto García‐Peñas _{1,

2} , Santiago Gómez‐Ruiz ₃ , Florian J. Stadler ₁

Affiliation

The functionalization of different structures with organometallic complexes provides exciting properties in terms of applicability due to its ability to provide multiple benefits for catalysis and biomedicine as well as in other fields. This work reports the direct, facile functionalization of copolymers based on N‐isopropylacrylamide and dopamine methacrylamide with bis(cyclopentadienyl)titanium (IV) dichloride (Cp₂TiCl₂, Cp = η⁵‐C₅H₅), which can offer an easy preparation method in comparison with other functionalization procedures. In addition, the lower critical solution temperature (LCST) is studied through aqueous solutions of new structures, which is affected by the presence of the metallocene moieties. UV–vis spectroscopy shows an average of the LCST‐behavior in comparison with rheology that provides essential information about the changes of the phase transition temperature associated with the composition of the polymeric chains and their interactions with the medium. Then, the inclusion of an organometallic complex along the polymeric chain can partially modify the phase transition temperature due to the interactions promoted by the organometallic complex of surroundings over the polymeric sections free of comonomer content.

中文翻译：

功能化聚（N-异丙基丙烯酰胺-共聚多巴胺甲基丙烯酰胺）共聚物中有机金属配合物促进的相变温度周围的相互作用

有机金属络合物对不同结构的功能化在适用性方面提供了令人兴奋的特性，因为它能够为催化和生物医学以及其他领域提供多种益处。这项工作报告基于共聚物的直接的，容易的官能Ñ -isopropylacrylamide和多巴胺甲基丙烯酰胺与双（环戊二烯基）钛（IV）二氯化物（CP ₂的TiCl ₂，CP =η ⁵ -C ₅ H ^ ₅），与其他功能化程序相比，它可以提供一种简便的制备方法。此外，通过新结构的水溶液研究了较低的临界溶液温度（LCST），该温度受茂金属部分的存在的影响。紫外-可见光谱显示了与流变学相比LCST行为的平均值，该流变学提供了有关与聚合物链组成相关的相变温度变化及其与介质相互作用的基本信息。然后，由于周围环境的有机金属配合物在没有共聚单体含量的聚合物部分上促进的相互作用，沿着聚合物链包含有机金属配合物可以部分地改变相变温度。

更新日期：2020-04-03

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