Soft Matter

Anion tuning of the rheology, morphology and gelation of a low molecular weight salt hydrogelator

GO Lloyd, JW Steed

文献索引：Lloyd, Gareth O.; Steed, Jonathan W. Soft Matter, 2011 , vol. 7, # 1 p. 75 - 84

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被引用次数: 45

摘要

1-(3-Methyl-1H-pyrazol-5-yl)-3-(3-nitrophenyl) urea (1) forms hydrogels in a range of acids at pH 1–2. The morphology and rheology of these gels are dependent on the identity of the anion and represent a way of tuning the gels' physical properties. The magnitude of the elastic storage modulus of the gels follows the trend according to the acid used to protonate the gelator H2SO4> MePO3H2> H3PO4≈ HBF4≈ HPF6> EtPO3H2. Chloride salts do ...