Hybrid hydrogels combining both a low molecular weight gelator (LMWG, 1,3:2,4-dibenzylidene-D-sorbitolâp,pâ²-dicarboxylic acid) and a polymer gelator (PG, agarose) are reported. The dynamic assembly of the LMWG is explored in the absence and presence of the PG using NMR and CD methods. It is shown that the LMWG still assembles into chiral nanofibres in the presence of a nanoscale PG network, although the kinetics of assembly are somewhat modified. As such, these hybrid materials can be considered as self-sorting multi-gelator gels. Importantly, the LMWG retains its pH-responsive character and can be assembled and disassembled within the PG network, which acts to retain the overall integrity of the gel. As such, these materials demonstrate how the responsive nature of an LMWG can be combined with the greater resilience of a PG network to yield novel materials with hybrid performance.
本研究报道了结合了低分子量凝胶剂(LMWG,1,3:2,4-二亚苄基-D-
山梨醇二
羧酸)和聚合物凝胶剂(
PG,
琼脂糖)的混合
水凝胶。使用核磁共振和 CD 方法探讨了 LMWG 在没有
PG 和有
PG 的情况下的动态组装。结果表明,在存在纳米级
PG 网络的情况下,LMWG 仍能组装成手性纳米纤维,只是组装动力学发生了一些变化。因此,这些混合材料可被视为自分选多凝胶体凝胶。重要的是,LMWG 保留了其 pH 响应特性,并可在
PG 网络中组装和分解,从而保持了凝胶的整体完整性。因此,这些材料展示了如何将 LMWG 的响应特性与
PG 网络的更大弹性相结合,从而产生具有混合性能的新型材料。