| Supramolecular polymers are formed by noncovalent interactions such as hydrogen bonding,metal coordination,π-πstacking,van der Waals force,electrostatic interaction and hydrophobic interaction.With the rapid development of supramolecular chemistry,a variety of supramolecular polymers have been applied to prepare multifunctional adhesion materials.Compared with traditional adhesion materials,supramolecular adhesion materials have many advantages,such as reversibility,recyclability and stimulus responsiveness,and have become one of the important research contents of supramolecular chemistry.Due to its precise chemical structure,simple synthesis and easy derivatization,small molecule monomers are increasingly used as building blocks for supramolecular assemblies.However,it is still a great challenge to prepare supramolecular polymer adhesives from the polymerization of small molecule monomers.In this thesis,we focus on the design of small molecule monomer based supramolecular polymers and their adhesion performances.In the first part,we designed and synthesized benzo-21-crown-7(B21C7)-substituted 2,5-pyridine dicarbonamide derivatives.The monomer is a white solid without viscosity and unable to polymerize with water molecules.Through metal coordination with Pt(PEt3)2(OTf)2,this monomer can self assemble with water molecules by hydrogen bonding to form supramolecular polymers with adhesive properties.FT-IR,TGA and other experimental results show that water molecules exist as comonomers and can hydrogen bond with B21C7 units.At the same time,the structure of this supramolecular polymer was studied by DFT theoretical calculation.It was found that metal coordination was the key to realize supramolecular polymerization.Due to the existence of a large number of hydrogen bonds,the supramolecular polymer has strong adhesion to hydrophilic surfaces,and the adhesion strength to glass is as high as 1.91 MPa.In addition,since the hydrogen bond is temperature sensitive,the adhesion performance of the supramolecular polymer can be adjusted by changing the temperature,so that it can be recycled.Even if it is reused for 9 times,its adhesion performance will not be weakened.In the second part,we designed and synthesized a series of B21C7derivatives with different chemical structures.By studying the effect of their chemical structure changes on supramolecular polymerization,it was proved that the formation of water induced supramolecular polymers was closely related to the type of linker,the number of B21C7 units and the substitution position.Moreover,we summarized the strategies for preparing water induced supramolecular polymer monomers and verified their feasibility.At the same time,the polymerization mechanism between B21C7 derivatives and water molecules was further studied by NMR,FT-IR,dielectric spectrum and theoretical calculation.In addition,the adhesion strength test results show that supramolecular polymers formed by B21C7 derivatives and water have good adhesion performance,and the adhesion strength to glass is as high as 4.91 MPa.In the third part,we prepared three 1,2-disubstituted cyclohexane derivatives with two B21C7 units by simple amidation reaction using B21C7-COOH and 1,2-disubstituted cyclohexanediamine as raw materials.On the one hand,the B21C7 units can generate multiple hydrogen bond interactions with the substrate surface,giving the material good adhesion performance.On the other hand,1,2-disubstituted cyclohexane derivatives have a variety of stereoisomers(such as enantiomers and cis/trans-isomers),which provide an opportunity to study the effect of spatial configuration on adhesion performance.A large number of theoretical calculations and experimental results show that the spatial structure of 1,2-disubstituted cyclohexane derivatives has a great impact on their supramolecular assembly and adhesion performance:1)the adhesion strength of racemic mixtures is stronger than that of pure enantiomers.The mixing of enantiomers can change the interfacial bonding ability and the cohesion of the material itself,so that the adhesion performance is enhanced;2)cis-isomers have better adhesion properties than trans-isomers due to their amorphous properties.In addition,we also studied the polymerization of 1,2-disubstituted cyclohexane derivatives with small molecular acids.Compared with trans-isomers,cis-isomer has stronger noncovalent interaction with small molecule acids and is easier to form supramolecular polymer.At the same time,we also found that the addition of small molecule acids can significantly enhance the adhesion of 1,2-disubstituted cyclohexane derivatives.In the fourth part,we synthesized four tetraphenyl derivatives(TPEs)with phenolic hydroxyl groups.A series of supramolecular polymers poly(TA-TPE)s with aggregation induced luminescence(AIE)were prepared b y mixing and heating TPEs with thioctic acid(TA).In the molten state,TA forms a linear polymer by ring opening polymerization of disulfide bond in the five membered ring,and then forms a supramolecular polymer by hydrogen bonding cross-linking with TPEs.The prepared poly(TA-TPE)s has good adhesion performance,and the adhesion strength to iron sheet is as high as 11.88 MPa.Moreover,poly(TA-TPE)s can be used in water for a long time,and the adhesive strength does not decrease significantly after immersion in water for30 days.At the same time,we also observed that the adhesion performance of poly(TA-TPE)s was closely related to the structure and content of TPEs.Because TPEs have AIE characteristics,poly(TA-TPE)s can emit bright fluorescence under ultraviolet light(365 nm).Based on its excellent processing,adhesion and fluorescence characteristics,poly(TA-TPE)s can be used as an underwater labeling,which is easy to distinguish when used in pure water or polluted water.Since the patterns drawn by poly(TA-TPE)s can only be recognized and read under ultraviolet light(365 nm),poly(TA-TPE)s can also be used to 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