Imperial College London
Alternate

Prof Andrew G. Livingston

Faculty of Engineering, Department of Chemical Engineering

Visiting Professor
 
 
 
//

Contact

 

+44 (0)20 7594 5582a.livingston Website

 
 
//

Assistant

 

Miss Jessica Baldock +44 (0)20 7594 5699

 
//

Location

 

413ACE ExtensionSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{He:2022:10.1038/s41563-021-01168-z,
author = {He, A and Jiang, Z and Wu, Y and Hussain, H and Rawle, J and Briggs, ME and Little, MA and Livingston, AG and Cooper, AI},
doi = {10.1038/s41563-021-01168-z},
journal = {Nature Materials},
pages = {463--470},
title = {A smart and responsive crystalline porous organic cage membrane with switchable pore apertures for graded molecular sieving},
url = {http://dx.doi.org/10.1038/s41563-021-01168-z},
volume = {21},
year = {2022}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Membranes with high selectivity offer an attractive route to molecular separations, where technologies such as distillation and chromatography are energy intensive. However, it remains challenging to fine tune the structure and porosity in membranes, particularly to separate molecules of similar size. Here, we report a process for producing composite membranes that comprise crystalline porous organic cage films fabricated by interfacial synthesis on a polyacrylonitrile support. These membranes exhibit ultrafast solvent permeance and high rejection of organic dyes with molecular weights over 600 g mol-1. The crystalline cage film is dynamic, and its pore aperture can be switched in methanol to generate larger pores that provide increased methanol permeance and higher molecular weight cut-offs (1,400 g mol-1). By varying the water/methanol ratio, the film can be switched between two phases that have different selectivities, such that a single, 'smart' crystalline membrane can perform graded molecular sieving. We exemplify this by separating three organic dyes in a single-stage, single-membrane process.
AU  - He,A
AU  - Jiang,Z
AU  - Wu,Y
AU  - Hussain,H
AU  - Rawle,J
AU  - Briggs,ME
AU  - Little,MA
AU  - Livingston,AG
AU  - Cooper,AI
DO  - 10.1038/s41563-021-01168-z
EP  - 470
PY  - 2022///
SN  - 1476-1122
SP  - 463
TI  - A smart and responsive crystalline porous organic cage membrane with switchable pore apertures for graded molecular sieving
T2  - Nature Materials
UR  - http://dx.doi.org/10.1038/s41563-021-01168-z
UR  - https://www.ncbi.nlm.nih.gov/pubmed/35013552
UR  - https://www.nature.com/articles/s41563-021-01168-z
UR  - http://hdl.handle.net/10044/1/93609
VL  - 21
ER  -
Download