Reversibly Compressible Cross-Linked Polystyrene Gels, Compatible With Toluene-d8 and Pyridine-d5, for Measurement of Residual Dipolar Couplings and Residual Chemical Shift Anisotropies

Franciane G Dos Santos; Daiane S Carvalho; Fernando Hallwass; Armando Navarro-Vázquez

doi:10.1002/mrc.5494

Reversibly Compressible Cross-Linked Polystyrene Gels, Compatible With Toluene-d₈ and Pyridine-d₅, for Measurement of Residual Dipolar Couplings and Residual Chemical Shift Anisotropies

Magn Reson Chem. 2025 Feb;63(2):98-104. doi: 10.1002/mrc.5494. Epub 2024 Nov 4.

Authors

Franciane G Dos Santos¹, Daiane S Carvalho¹, Fernando Hallwass¹, Armando Navarro-Vázquez¹

Affiliation

¹ Departamento de Química Fundamental, Centro de Ciências Exatas e da Natureza, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil.

PMID: 39496568
DOI: 10.1002/mrc.5494

Abstract

A chemically cross-linked version of polystyrene is presented here that allows the preparation of reversibly mechanically compressible gels as NMR weakly aligning media. The gels can be successfully swollen in aromatic solvents such as toluene-d₈ and pyridine-d₅, as well as in CDCl₃, and provided accurate measurements of ¹D_CH RDCs and ¹³C-RCSAs.

Keywords: aligning media; polystyrene; residual chemical shift anisotropy; residual dipolar couplings.

Abstract

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