*Article* **Preparation of Nanofibers Mats Derived from Task-Specific Polymeric Ionic Liquid for Sensing and Catalytic Applications**

**David Valverde 1,2 , Iván Muñoz <sup>1</sup> , Eduardo García-Verdugo 1,\* , Belen Altava <sup>1</sup> and Santiago V. Luis <sup>1</sup>**


**Abstract:** Nanofibers mats derived from the task-specific functionalized polymeric ionic liquids based on homocysteine thiolactone are obtained by electrospinning them as blends with polyvinylpyrrolidone. The presence of this functional moiety allowed the post-functionalization of these mats through the aminolysis of the thiolactone ring in the presence of an amine by a thiol–alkene "click" reaction. Under controlled experimental conditions the modification can be performed introducing different functionalization and crosslinking of the electrospun fibers, while maintaining the nanostructure obtained by the electrospinning. Initial studies suggest that the nanofibers based on these functionalized polymeric ionic liquids can be used in both sensing and catalytic applications.

**Keywords:** poly(homocysteine thiolactone); nanofibers; electrospinning; sensing; catalysis

## **Citation:** Valverde, D.; Muñoz, I.; García-Verdugo, E.; Altava, B.; Luis, S.V. Preparation of Nanofibers Mats Derived from Task-Specific Polymeric Ionic Liquid for Sensing and Catalytic Applications. *Polymers* **2021**, *13*, 3110. https://doi.org/10.3390/ polym13183110

Academic Editor: Ick-Soo Kim

Received: 27 July 2021 Accepted: 8 September 2021 Published: 15 September 2021

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