Growth and characterization of large centimetre-size levoglucosan single crystals

Levoglucosan is a typical orientationally disordered crystalline material (the molecules are long-range positionally ordered but orientationally disordered). At present, experimental research on its glass transition is mainly focused on polycrystals, while the study of the corresponding single crystals is rarely reported. Centimetre-size (maximum dimensions of 2.1 × 0.9 × 0.4 cm) levoglucosan single crystals of high quality were grown by the solution method, laying a necessary foundation for experimental measurements of the glass transition mechanism in the material.