In this paper,supra-amphiphilic compounds containing disaccharides and azobenzene ends have been constructed via dynamic covalent bond.It was found that the slight structural difference of the disaccharides made signi...In this paper,supra-amphiphilic compounds containing disaccharides and azobenzene ends have been constructed via dynamic covalent bond.It was found that the slight structural difference of the disaccharides made significant difference in the self-assembled morphologies.Namely,three kinds of azodisaccharide supra-amphiphiles were found to assemble into different morphologies,with the only difference in chemical structure from the disaccharides.More importantly,the structural difference between the disaccharides,including lactoside,maltoside and cellobioside was trivial.Molecular simulation revealed the packing of molecules was due to the different contribution from hydrogen bonds.The above results clearly indicated the contribution of saccharide packing,especially the related hydrogen bonding,to the final morphology of the assembled structures.展开更多
In this paper, dynamic covalent bond has been employed to construct supra-amphiphile of carbohydrate for the first time. In neutral environment, the molecule was fabricated by reacting a hydrophobic building block bea...In this paper, dynamic covalent bond has been employed to construct supra-amphiphile of carbohydrate for the first time. In neutral environment, the molecule was fabricated by reacting a hydrophobic building block bearing benzoic aldehyde with a hydrophilic building block bearing hydrazine to form a sugar-containing supra-amphiphile based on acylhydrazone bond. The obtained azobenzenegalactopyranoside(Azo-Gal) supra-amphiphile self-assembled to fibrillar structure in water, which showed dual responses to UV light and p H.展开更多
As an emerging type of important macrocycles for supramolecular chemistry,pillararenes and their derivatives have been widely studied and applied in numerous fields,which intensively promotes the development of chemis...As an emerging type of important macrocycles for supramolecular chemistry,pillararenes and their derivatives have been widely studied and applied in numerous fields,which intensively promotes the development of chemistry,materials science and biology.Pillararene-based theranostic systems are of special interest in the biological and medical areas as they have shown very promising results.Owing to easy preparation,reliable guest affinity,good biocompatibility and stability,pillararenes are frequently used to construct functional biomaterials.On one hand,pillararenes can either be used individually or form diversiform self-assemblies such as micelles,nanoparticles and vesicles to increase water solubility and biocompatibility of drugs.On the other hand,it is promising to modify solid materials like framework materials,silica nanoparticles and graphene oxides with pillararene derivatives to enhance their functions and controllability.In this review,we summarize recent endeavors of pillararene-based supramolecular systems with theranostics and other biological applications comprising drug delivery/chemotherapy,photodynamic/photothermal therapy,antimicrobials,bioimaging,etc.By introducing several typical examples,the design principles,preparation strategies,identifications and bio-applications of these pillararene-based supramolecular systems are described.Future challenges and directions of this field are also outlined.展开更多
基金the National Natural Science Foundation of China(NSFC,Nos.52125303,51721002,91956127 and 21975047)for financial supportthe National Natural Science Foundation of China(NSFC,Nos.21674114 and 91956127)for financial support+1 种基金supported by the Shanghai Municipal Science and Technology Major Project(No.2018SHZDZX01)ZJ Lab。
文摘In this paper,supra-amphiphilic compounds containing disaccharides and azobenzene ends have been constructed via dynamic covalent bond.It was found that the slight structural difference of the disaccharides made significant difference in the self-assembled morphologies.Namely,three kinds of azodisaccharide supra-amphiphiles were found to assemble into different morphologies,with the only difference in chemical structure from the disaccharides.More importantly,the structural difference between the disaccharides,including lactoside,maltoside and cellobioside was trivial.Molecular simulation revealed the packing of molecules was due to the different contribution from hydrogen bonds.The above results clearly indicated the contribution of saccharide packing,especially the related hydrogen bonding,to the final morphology of the assembled structures.
基金National Natural Science Foundation of China (Nos.91527305,21474020,91227203 and 51322306)the Innovation Program of the Shanghai Municipal Education Commission are acknowledged for their financial support
文摘In this paper, dynamic covalent bond has been employed to construct supra-amphiphile of carbohydrate for the first time. In neutral environment, the molecule was fabricated by reacting a hydrophobic building block bearing benzoic aldehyde with a hydrophilic building block bearing hydrazine to form a sugar-containing supra-amphiphile based on acylhydrazone bond. The obtained azobenzenegalactopyranoside(Azo-Gal) supra-amphiphile self-assembled to fibrillar structure in water, which showed dual responses to UV light and p H.
基金This work was supported by the National Natural Science Foundation of China(22035006)This publication is based in part upon work supported by the King Abdullah University of Science and Technology Office of Sponsored Research(OSR-2019-CRG8-4032).
文摘As an emerging type of important macrocycles for supramolecular chemistry,pillararenes and their derivatives have been widely studied and applied in numerous fields,which intensively promotes the development of chemistry,materials science and biology.Pillararene-based theranostic systems are of special interest in the biological and medical areas as they have shown very promising results.Owing to easy preparation,reliable guest affinity,good biocompatibility and stability,pillararenes are frequently used to construct functional biomaterials.On one hand,pillararenes can either be used individually or form diversiform self-assemblies such as micelles,nanoparticles and vesicles to increase water solubility and biocompatibility of drugs.On the other hand,it is promising to modify solid materials like framework materials,silica nanoparticles and graphene oxides with pillararene derivatives to enhance their functions and controllability.In this review,we summarize recent endeavors of pillararene-based supramolecular systems with theranostics and other biological applications comprising drug delivery/chemotherapy,photodynamic/photothermal therapy,antimicrobials,bioimaging,etc.By introducing several typical examples,the design principles,preparation strategies,identifications and bio-applications of these pillararene-based supramolecular systems are described.Future challenges and directions of this field are also outlined.
