In this proof-of-concept study, an active-template coupling is used to demonstrate a novel kinetic self-sorting process. This process iteratively increases the yield of the target heterocircuit [3]rotaxane product at the expense of other threaded species.
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http://dx.doi.org/10.1002/anie.201606640 | DOI Listing |
Angew Chem Int Ed Engl
January 2025
Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan.
Supramolecular polymers offer an intriguing possibility to transfer molecular properties from the nano- to the mesoscale. Towards this achievement, seed-initiated supramolecular polymerization has emerged as a powerful tool, as it prevents unlimited growth and enables size control of the assembly outcome. However, the potential application of the seeding method in the context of complex supramolecular systems is hitherto unclear.
View Article and Find Full Text PDFJ Am Chem Soc
November 2024
Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
Herein, we report multicomponent self-assembly and self-sorting of polymer micelles in water using mixtures of an anionic random copolymer bearing sodium sulfonate and dodecyl groups and random copolymers carrying poly(ethylene glycol) (PEG) and alkyl groups. In pure water, the anionic copolymer is co-self-assembled with the PEG copolymers to form anion/PEG-fused micelles with a controlled aggregation number. By designing the composition or alkyl groups of PEG copolymers, the fused micelle is reversibly self-sorted into discrete anion or PEG micelles in the presence of NaCl.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
July 2024
Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), Avda. Astrofísico Fco. Sánchez 3, 38206, La Laguna, Spain.
Multiple dynamic libraries of compounds are generated when more than one reversible reaction comes into play. Commonly, two or more orthogonal reversible reactions are used, leading to non-communicating dynamic libraries which share no building blocks. Only a few examples of communicating libraries have been reported, and in all those cases, building blocks are reversibly exchanged from one library to the other, constituting an antiparallel dynamic covalent system.
View Article and Find Full Text PDFAcc Chem Res
April 2024
State Key Laboratory of Physical Chemistry of Solid Surfaces, School of Electronic Science and Engineering, Key Laboratory of Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Innovation Laboratory for Science and Technologies of Energy Materials of Fujian Province (IKKEM) and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
Langmuir
February 2024
Institut für Physikalische Chemie und Physik der Polymere, Leibniz-Institut für Polymerforschung Dresden e.V., Dresden D-01069, Germany.
The solvophobicity-driven directional self-assembly of polymer-coated gold nanorods is a well-established phenomenon. Yet, the kinetics of this process, the origin of site-selectivity in the self-assembly, and the interplay of (attractive) solvophobic brush interactions and (repulsive) electrostatic forces are not fully understood. Herein, we use a combination of time-resolved (vis/NIR) extinction spectroscopy and finite-difference time-domain (FDTD) simulations to determine conversion profiles for the assembly of gold nanorods with polystyrene shells of distinct thicknesses into their (tip-to-tip) self-assembled structures.
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