Skip to main content

Thank you for visiting You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.


Moving beyond passive separations

A composite membrane that contains porous organic cages is shown to be dynamic, with pore aperture diameter controlled by solvent allowing for graded molecular sieving.

Your institute does not have access to this article

Access options

Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.

Fig. 1: Structure of the CC3 porous organic cage when exposed to water (CC3α) and when exposed to methanol (CC3γ′).


  1. Sholl, D. S. & Lively, R. P. Nature 532, 435–437 (2016).

    Article  Google Scholar 

  2. Baker, R. W. Membrane Technology and Applications. Membrane Technology 3rd edn (Wiley, 2012).

  3. He, A. et al. Nat. Mater. (2022).

    Article  Google Scholar 

  4. Wang, X. et al. Nat. Commun. 8, 14460 (2017).

    CAS  Article  Google Scholar 

  5. Knebel, A. et al. Science 358, 347–351 (2017).

    CAS  Article  Google Scholar 

  6. Ying, Y. et al. Angew. Chem. Int. Ed. 60, 11318–11325 (2021).

    CAS  Article  Google Scholar 

  7. Keskin, B., Ersahin, M. E., Ozgun, H. & Koyuncu, I. J. Water Process Eng. 42, 102172 (2021).

    Article  Google Scholar 

  8. McCutcheon, J. R. Joule 3, 1168–1171 (2019).

    Article  Google Scholar 

  9. Chowdhury, M. R., Steffes, J., Huey, B. D. & McCutcheon, J. R. Science 361, 682–686 (2018).

    CAS  Article  Google Scholar 

Download references

Author information

Authors and Affiliations


Corresponding author

Correspondence to Jeffrey R. McCutcheon.

Ethics declarations

Competing interests

The authors declare no competing interests.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

McCutcheon, J.R., Ostwal, M. & Zhang, M. Moving beyond passive separations. Nat. Mater. 21, 387–388 (2022).

Download citation

  • Published:

  • Issue Date:

  • DOI:


Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing