Polymer network comprised of steroidal rotors as promising storage material

Chemphyschem. 2024 Jan 23:e202300793. doi: 10.1002/cphc.202300793. Online ahead of print.ABSTRACTIn this paper, we report a new generation of polymeric networks as potential functional material based on changes in molecular dynamics in the solid state. The material is obtained by free radical polymerization of a diacrylate derivative bearing a steroid (stator) and a 1,4-diethynyl-phenylene-d4 fragment (rotator). Polymer research using the PALS technique complements the knowledge about nanostructural changes occurring in the system in the temperature range -115°C - +190°C. It indicates the presence of two types of free nanovolumes in the system and the occurrence of phase transitions. The polymer is characterized using 1H NMR, 2H Solid Echo NMR, ATR-FTIR and Raman spectroscopies, thermal analysis, and porosimetry. It is proved that the applied procedure leads to the formation of a novel porous organic material containing multiple molecular rotors.PMID:38259120 | DOI:10.1002/cphc.202300793
Source: Chemphyschem - Category: Chemistry Authors: Source Type: research