Triazole-based one-dimensional spin-crossover coordination polymers.

One-dimensional coordination Fe(II) polymers constructed through triple N(1),N(2)-1,2,4-triazole bridges form a unique class of spin-crossover materials, the synthetic versatility of which allows tuning the spin-crossover properties, the design of gels, films, liquid crystals, and nanoparticles and single-particle addressing. This Minireview provides the first complete overview of these very attractive switchable materials and their most recent developments.