Layer defoliation and slippery of triformylphloroglucinol-covalent organic framework under pH stress

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Article number135059
Journal / PublicationMaterials Letters
Volume351
Online published16 Aug 2023
Publication statusPublished - 15 Nov 2023

Abstract

The triformylphloroglucinol covalent organic framework is a keto-enamine-based porous matrix generally presented as two-dimensional layers stacked to form a superstructure. This study aims to compare the layer stability for three Tp-COFs, two from triformylphloroglucinol and compounds containing the 2,5-diamino structure, TpPa(OH)2 and TpPaSO3Na, and another from triformylphloroglucinol and biuret, called TpBu. The pH −0.2 stresses moderately slip the TpPa(OH)2 layers, while pH 14 stress leads to severe layer slippery to deteriorate its long-range crystal structure. The excess protons protonate the sulfite group of TpPaSO3Na, weaken the H bonds between amine and S-O groups, and make the pH −0.2 stress layer slippery. The layer stability of Tp-COFs correlates with the H bonds formed with the amine groups. The TpBu has excessive amine groups, hence having the highest layer stability. © 2023 Elsevier B.V.

Research Area(s)

  • Amorphous material, Crystal, Exfoliation, Keto-enamine COF, Stability

Citation Format(s)

Layer defoliation and slippery of triformylphloroglucinol-covalent organic framework under pH stress. / Tsai, Ruei-Wei; Chang, Jo-Shu; Wu, Rome-Ming et al.
In: Materials Letters, Vol. 351, 135059, 15.11.2023.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review