Pore engineering of ultrathin covalent organic framework membranes for organic solvent nanofiltration and molecular sieving

Shinde, D.B., Cao, L., Wonanke, A.D.D. ORCID: 0000-0002-9066-2715, Li, X., Kumar, S., Liu, X., Hedhili, M.N., Emwas, A.-H., Addicoat, M. ORCID: 0000-0002-5406-7927, Huang, K.-W. and Lai, Z., 2020. Pore engineering of ultrathin covalent organic framework membranes for organic solvent nanofiltration and molecular sieving. Chemical Science, 11 (21), pp. 5434-5440. ISSN 2041-6520

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Abstract

The advantages of two dimensional covalent organic framework membranes to achieve high flux have been demonstrated, but the capability of easy structural modification to manipulate the pore size has not been fully explored yet. Here we report the use of the Langmuir–Blodgett method to synthesize two ultrathin covalent organic framework membranes (TFP–DPF and TFP–DNF) that have a similar framework structure to our previously reported covalent organic framework membrane (TFP–DHF) but different lengths of carbon chains aiming to rationally control the pore size. The membrane permeation results in the applications of organic solvent nanofiltration and molecular sieving of organic dyes showed a systematic shift of the membrane flux and molecular weight cut-off correlated to the pore size change. These results enhanced our fundamental understanding of transport through uniform channels at nanometer scales. Pore engineering of the covalent organic framework membranes was demonstrated for the first time.

Item Type: Journal article
Publication Title: Chemical Science
Creators: Shinde, D.B., Cao, L., Wonanke, A.D.D., Li, X., Kumar, S., Liu, X., Hedhili, M.N., Emwas, A.-H., Addicoat, M., Huang, K.-W. and Lai, Z.
Publisher: Royal Society of Chemistry (RSC)
Date: 30 April 2020
Volume: 11
Number: 21
ISSN: 2041-6520
Identifiers:
NumberType
10.1039/d0sc01679aDOI
1333622Other
Rights: This journal is © The Royal Society of Chemistry 2020. Open Access Article. Published on 30 April 2020. Downloaded on 10/16/2020 2:32:46 PM. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Divisions: Schools > School of Science and Technology
Record created by: Linda Sullivan
Date Added: 19 Oct 2020 14:11
Last Modified: 19 Oct 2020 14:11
URI: http://irep.ntu.ac.uk/id/eprint/41350

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