Control of self-assembly is significant to the preparation of supramolecular materials, but the control of hydration, responsiveness, dimension, catalysis of macrocyclic amphiphiles in an atom-economic manner is still...Control of self-assembly is significant to the preparation of supramolecular materials, but the control of hydration, responsiveness, dimension, catalysis of macrocyclic amphiphiles in an atom-economic manner is still a great challenge. The herein presented 527 Da low-molecular-weight macrocyclic amphiphile was fabricated by utilizing the selenium-containing crown ether as a hydrophobic motif together with guanidinium group as the hydrophilic moiety. The resulting benzo[21]crown-7 based macrocyclic amphiphile readily forms a redox-responsive solid nanoparticles in water, which can further interconnect into wrinkled pattern on-surface, as well as exhibits as a nanozyme for catalyzing disulfid bond formation. The present work highlights the great potential of guanidinium-and selenium-containing crown ethers for the control of functional assemblies.展开更多
Redox responsive vesicles were constructed based on guest interaction between fl-cyclodextrin and a ferrocene self-assembly of a supra-amphiphile built by the host- derivative. The structure and destruction-reconstruc...Redox responsive vesicles were constructed based on guest interaction between fl-cyclodextrin and a ferrocene self-assembly of a supra-amphiphile built by the host- derivative. The structure and destruction-reconstruction reversibility of the ＂smart＂ vesicles were clearly characterized by electron microscopy and dynamic light scattering. Notably, these vesicles were proved to be capable of controlled release function and bringing protease resistance to the enzyme, showing great biocompatibility and promising applications.展开更多
A novel diselenide-containing crown ether(BC7Se_(2))was fabricated,which can polymerize to form cyclic oligomers through intermolecular dynamic covalent reaction by irradiation of visible light.The size and distributi...A novel diselenide-containing crown ether(BC7Se_(2))was fabricated,which can polymerize to form cyclic oligomers through intermolecular dynamic covalent reaction by irradiation of visible light.The size and distribution of oligomers are related to the monomer concentration.The decomposition reaction of oligomers is controlled by topology and solvents.Furthermore,potassium cation can inhibit the polymerization of BC7Se_(2)and accelerate the decomposition of oligomers.展开更多
基金financial support from the National Natural Science Foundation of China (Nos. 21901210,22071196, 22007078)Key R&D Program of Shaanxi Province (No.2021KWZ-18)+4 种基金Aeronautical Science Foundation of China (No. ASFC-2020Z061053001)Opening Project of State Key Laboratory of Polymer Materials Engineering (Sichuan University)(No. klpme2021-05-03)Student Innovation and Entrepreneurship Education Center of the Student Work Department of the Party Committee of NPU(No. 2021-cxcy-012)Fundamental Research Funds for the Central Universitiesand Fellowship from CSC Innovative Team Program(No. CXXM20190099)。
文摘Control of self-assembly is significant to the preparation of supramolecular materials, but the control of hydration, responsiveness, dimension, catalysis of macrocyclic amphiphiles in an atom-economic manner is still a great challenge. The herein presented 527 Da low-molecular-weight macrocyclic amphiphile was fabricated by utilizing the selenium-containing crown ether as a hydrophobic motif together with guanidinium group as the hydrophilic moiety. The resulting benzo[21]crown-7 based macrocyclic amphiphile readily forms a redox-responsive solid nanoparticles in water, which can further interconnect into wrinkled pattern on-surface, as well as exhibits as a nanozyme for catalyzing disulfid bond formation. The present work highlights the great potential of guanidinium-and selenium-containing crown ethers for the control of functional assemblies.
基金This work was supported by the National Natural Science Foundation of China （（Nos. 21420102007, 21234004, 21574056, 91527302）, the Chang Jiang Scholars Program of China, and Project 2016014 Sup- ported by Graduate Innovation Fund of Jilin University.
文摘Redox responsive vesicles were constructed based on guest interaction between fl-cyclodextrin and a ferrocene self-assembly of a supra-amphiphile built by the host- derivative. The structure and destruction-reconstruction reversibility of the ＂smart＂ vesicles were clearly characterized by electron microscopy and dynamic light scattering. Notably, these vesicles were proved to be capable of controlled release function and bringing protease resistance to the enzyme, showing great biocompatibility and promising applications.
基金financial support from the National Natural Science Foundation of China(Nos.21901210,21901209,22071196,22007078)Natural Science Foundation of Shaanxi Province of China(No.2019JQ-626)+3 种基金Postdoctoral Innovative Talents Supporting Project of China(No.BX20180255)Key R&D Program of Shaanxi Province(Nos.2019KW-031,2019KW-038)Fundamental Research Funds for the Central Universities(Nos.3102019smxy001,3102018zy051,3102018jcc007,3102017OQD045,3102017OQD040,3102017OQD115,3102019ghxm005)State Key Laboratory of Solidification Processing in NPU(No.SKLSP201817)。
文摘A novel diselenide-containing crown ether(BC7Se_(2))was fabricated,which can polymerize to form cyclic oligomers through intermolecular dynamic covalent reaction by irradiation of visible light.The size and distribution of oligomers are related to the monomer concentration.The decomposition reaction of oligomers is controlled by topology and solvents.Furthermore,potassium cation can inhibit the polymerization of BC7Se_(2)and accelerate the decomposition of oligomers.
