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(A, B) TEM images of the hydrogels (inset: optical images) formed by (A) 0.4 wt% 1; (B) 0.4 wt% 1 and 1 eq. lactose in water at pH7.4 (Scale bar = 100 nm); (C, D) The (C) strain and (D) frequency dependence of dynamic storage modulus G′ and loss modulus G″ of the gels formed by 1 at 0.4 wt% or the gel formed by 1 at 0.4 wt% and 1 eq. lactose at pH7.4 in water.
