1 School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, Xi'an Jiaotong University, Xi'an 710049, China. [email protected].
2 Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
3 Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China.
4 Instrumental Analysis Center of Xi'an Jiaotong University, Xi'an 710049, China.
Expression of Concern for 'One-pot synthesis of acid-degradable polyphosphazene prodrugs for efficient tumor chemotherapy' by Na Zhou et al., J. Mater. Chem. B, 2020, 8, 10540-10548, https://doi.org/10.1039/D0TB01992E.