Two host-guest systems have been constructed,by employing structurally similar terpyridine platinum(II)macrocycle and molecular tweezer as the synthetic receptors.The macrocycle/guest complex displays low-energy emiss...Two host-guest systems have been constructed,by employing structurally similar terpyridine platinum(II)macrocycle and molecular tweezer as the synthetic receptors.The macrocycle/guest complex displays low-energy emission signal,reinforced non-covalent binding affinity,and enhanced photosensitization capability than those of the molecular tweezer/guest one.The discrepancy between macrocyclic and acyclic preorganization modes originates from the different numbers of Pt(II)Pt(II)metal-metal bonds in host-guest complexation structures.展开更多
The precise control of the conformations of biomolecules adsorbed on a surface at the single-molecule level is significant. However, it remains a huge challenge because of the complex structure and conformation divers...The precise control of the conformations of biomolecules adsorbed on a surface at the single-molecule level is significant. However, it remains a huge challenge because of the complex structure and conformation diversity of biomolecules. Herein, a ＂nanopore-confined recognition＂ strategy is proposed to manipulate the adsorption of individual valinomycin molecules at room temperature through precise design of functionalized conjugated macrocycle （CPN8） supramolecular nanopores with complementary architectures and binding sites. We revealed that CPN8 prefers to selectively recognizing valinomycin with complementary architecture because of the strong synergistic interactions between the isopropyl groups of valinomycin and the amino groups of CPN8, with valinomycin- highly oriented pyrolytic graphite （HOPG） interactions. Our perspectives at the single-molecule level will provide valuable insights to improve the design of supramolecular nanopores for conformation-selective recognition of non-conjugated molecules.展开更多
linear main-chain supramolecular polymer was constructed in aqueous solution via g-CD host recognition with coumarin unit as well as metal-ligand coordination between terpyridine unit and Zn2＋.Therein, the multiple n...linear main-chain supramolecular polymer was constructed in aqueous solution via g-CD host recognition with coumarin unit as well as metal-ligand coordination between terpyridine unit and Zn2＋.Therein, the multiple non-covalent interactions produce the ternary system as the primary assembly.Besides, the self-assembly behavior and morphological properties of this supramolecular polymer system were characterized by DLS and TEM experiments展开更多
基金supported by the National Natural Science Foundation of China(Nos.21674106 and 21871245)CAS Youth Innovation Promotion Association(No.2015365)the Fundamental Research Funds for the Central Universities(No.WK3450000004)
文摘Two host-guest systems have been constructed,by employing structurally similar terpyridine platinum(II)macrocycle and molecular tweezer as the synthetic receptors.The macrocycle/guest complex displays low-energy emission signal,reinforced non-covalent binding affinity,and enhanced photosensitization capability than those of the molecular tweezer/guest one.The discrepancy between macrocyclic and acyclic preorganization modes originates from the different numbers of Pt(II)Pt(II)metal-metal bonds in host-guest complexation structures.
基金Acknowledgements The authors gratefully acknowledged Prof. Chen Wang （National Center for Nanoscience and Technology, China） and Prof. Guocong Guo （Fujian Institute of Research on the Structure of Matter, CAS） for their helpful discussions and advice. This work was supported by the National Basic Research Program of China （No. 2012CB933001）, the National Natural Science Foundation of China （Nos. 51173031, 21472029, 21303202, and 91127043）, the program of Chinese Academy of Sciences （No. YZ201318）, and the Open Project of State Key Laboratory of Supramolecular Structure and Materials （No. sklssm201607）.
文摘The precise control of the conformations of biomolecules adsorbed on a surface at the single-molecule level is significant. However, it remains a huge challenge because of the complex structure and conformation diversity of biomolecules. Herein, a ＂nanopore-confined recognition＂ strategy is proposed to manipulate the adsorption of individual valinomycin molecules at room temperature through precise design of functionalized conjugated macrocycle （CPN8） supramolecular nanopores with complementary architectures and binding sites. We revealed that CPN8 prefers to selectively recognizing valinomycin with complementary architecture because of the strong synergistic interactions between the isopropyl groups of valinomycin and the amino groups of CPN8, with valinomycin- highly oriented pyrolytic graphite （HOPG） interactions. Our perspectives at the single-molecule level will provide valuable insights to improve the design of supramolecular nanopores for conformation-selective recognition of non-conjugated molecules.
基金financial support from the National Natural Science Foundation of China (NSFC, Nos. 21421004, 21722603 & 21476075)the Innovation Program of Shanghai Municipal Education Commissionthe Fundamental Research Funds for the Central Universities (No. 222201717003)
文摘linear main-chain supramolecular polymer was constructed in aqueous solution via g-CD host recognition with coumarin unit as well as metal-ligand coordination between terpyridine unit and Zn2＋.Therein, the multiple non-covalent interactions produce the ternary system as the primary assembly.Besides, the self-assembly behavior and morphological properties of this supramolecular polymer system were characterized by DLS and TEM experiments
