Synthesis and characterization of novel coordination spin crossover poly(glycidyl methacrylate) with pendant iron(II)-4-amino-1,2,4-triazole groups

•We synthesize a novel polymer-based spin crossover complex.•We characterize its structure and spin crossover properties.•We report a novel reversible temperature-induced spin crossover complex.•The coordination complex displays an evident spin-transition performance.

Poly(glycidyl methacrylate) (PGMA) with pendant iron(II)-triazoles groups was synthesized through the grafting method. The structure was characterized by 1H NMR, FTIR and XRD. Meanwhile, SQUID and DSC were conducted to measure the spin crossover property of the composite. The Fe(II) complexes modified by PGMA not only display an evident spin crossover performance, but also have excellent processability.

Graphical abstractThe Fe(II) complex modified by PGMA displays an evident spin crossover performance, according to the SQUID measurement and the color of complex in different temperatures.Figure optionsDownload full-size imageDownload as PowerPoint slide