Retraction: CuS nanocrystal@microgel nanocomposites for light-regulated release of dual-drugs and chemo-photothermal synergistic therapy in vitro.

[This retracts the article DOI: 10.1039/C5RA25870G.]. This journal is © The Royal Society of Chemistry.

The Royal Society of Chemistry hereby wholly retracts this RSC Advances article due to concerns with the reliability of the data in the published article.

The TEM image in Fig. 1c contains duplicating features and inconsistencies within the image, which indicates that it has been manipulated.

Given the significance of the concern about the validity of the data, the findings presented in this paper are no longer reliable.

Jie Sun, Rijun Gui, Hui Jin, Na Li and Xiaojing Wang state that Fig. 1c has not been manipulated but have not been able to provide any satisfactory raw data to confirm its authenticity. The authors oppose the decision to retract.

Signed: Laura Fisher, Executive Editor, RSC Advances

Date: 21st September 2020