Design And Properties Of Organic Gelation Factorbased On Perylene Bisimide And Tripyridine

In recent years,new self-assembled organic small molecule gels have attracted widespread attention as a soft material.Using organic synthesis methods,this paper mainly studies two kinds of small molecule gels.One is based on3,4,9,10-Perylenetetracarboxylic dianhydride,and the other is based on Terpyridine carboxylic acid that recognizes organic and inorganic acids.The gelation properties,micro-morphology,potential applications,etc.of these two small-molecule gels were studied in detail.The specific research contents are as follows:1)The molecular systems PBI1 and PBI2 based on Perylene Bisimide?PBI?chromophore were prepared and characterized.Through other non-covalent hydrogen bonding interactions between the acid and the imidazole unit,the stable gelling agent PBI2can self-assemble into entangled supramolecular fibers,thereby forming a fluorescence-enhanced gel triggered by ultrasound in DMSO.In addition,the effects of structural changes and gel methods on gel properties were compared and studied.2)Two gel factors TD containing cis and trans cyclohexanediamine and terpyridine carboxylic acid were designed and synthesized.The gel factor can selectively respond to Sn⁴⁺and can distinguish between tartaric acid in organic acids and phosphoric acid,hydrochloric acid in inorganic acids.And through the electron microscope,XRD,fluorescence ultraviolet spectrometer and other chemical instruments,the microstructure of the gel,the change of the packing mode and the spectral properties were studied in detail.In summary,we designed and synthesized organogel factors based on perylene bisimide and terpyridine,and studied the properties of these two small molecule gels.Experimental studies have found that these gels can be enhanced in fluorescence under ultrasound induction,and can selectively visually identify inorganic and organic acids.