College of Science and Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Yuhua Road 70, Shijiazhuang 050080, PR China.
College of Science and Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Yuhua Road 70, Shijiazhuang 050080, PR China.
J Colloid Interface Sci. 2019 Mar 22;540:134-141. doi: 10.1016/j.jcis.2019.01.012. Epub 2019 Jan 4.
Herein, O-substituted terpyridine motif was used as both rigid fluorescent π core and ion binding site, in order to construct an novel amphiphilic organogelator TEC containing cholesterol unit. We demonstrated a ultrasound induced reversible sol-gel transition approach driven by adjusted non covalent interactions and the resulted gels showed self-healing properties and tunable emission color when incorporating inorganic ions into the gel matrices. By heating-cooling process, the gel transformed to sol again. Simultaneously, the vesicle-tube morphology transition controlled by sonication and heating-cooling was also observed, together with aggregation induced emission enhancement (AIE) property of the gel. The results suggested that ultrasound promoted the J aggregations of terpyridine motifs and enhanced the hydrogen bonding interactions of TEC molecules, leading to the gelation process.
在这里，O-取代的三联吡啶基序被用作刚性荧光π核和离子结合位点，以构建一种含有胆固醇单元的新型两亲性有机凝胶因子 TEC。我们展示了一种超声诱导的可逆溶胶-凝胶转变方法，该方法由调整的非共价相互作用驱动，所得凝胶在将无机离子掺入凝胶基质中时表现出自修复性能和可调发射颜色。通过加热-冷却过程，凝胶再次转变为溶胶。同时，还观察到了超声和加热-冷却控制的囊泡-管形态转变，以及凝胶的聚集诱导发射增强（AIE）性质。结果表明，超声促进了三联吡啶基序的 J 聚集并增强了 TEC 分子的氢键相互作用，从而导致了凝胶化过程。
