Versatile synthetic platform for polymer membrane libraries using functional networks

Joshua D. Moon, Rahul Sujanani, Zhishuai Geng, Benny D. Freeman, Rachel A. Segalman, Craig J. Hawker

Research output: Contribution to journalArticleResearchpeer-review

7 Citations (Scopus)

Abstract

Poly(ethylene glycol) (PEG) diacrylate copolymer networks containing pentafluorophenyl active esters can be quantitatively substituted with a wide variety of primary amines, enabling the development of a versatile synthetic platform for the preparation of polymer hydrogel and membrane libraries. By tuning the starting network, a high degree of control over cross-linking density, water uptake, and functional group incorporation can be reproducibly achieved, which is vital for elucidating structure-property relationships in ion transporting membranes. From the same cross-linked scaffold, a diversity of basic, acidic, and solute-chelating moieties were obtained through functionalization, which allows for tailored uptake of basic and acidic organic dyes and metal chloride salts. Ion permeation and sorption measurements for a series of polymer networks with controlled cross-linking density and varied imidazole grafting densities illustrate the ability of this platform to isolate the effect of chemical functionality on ion transport from the effects of cross-linking density and water content.

Original languageEnglish
Pages (from-to)866-873
Number of pages8
JournalMacromolecules
Volume54
Issue number2
DOIs
Publication statusPublished - 13 Jan 2021
Externally publishedYes

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