Multicomponent supramolecular gels provide opportunities to form materials that are not accessible when using the single components alone. Different scenarios are possible when mixing multiple components, from complete co-assembly (mixing of the components within the self-assembled structures formed) to complete self-sorting such that each structure contains only one of the components. Most examples of multicomponent gels that currently exist form stable gels. Here, we show that this can be used to control the mechanical properties of the gels, but what is probably most exciting is that we show that we can use a magnetic field to control the shape of the crystals. The gelling component aligns in a magnetic field and so results in anisotropic crystals being formed.
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http://dx.doi.org/10.1039/d1sc02347k | DOI Listing |
ACS Appl Mater Interfaces
January 2025
Advanced Interdisciplinary Institute of Environment and Ecology, Guangdong Provincial Key Laboratory of Wastewater Information Analysis and Early Warning, Beijing Normal University, Zhuhai 519087, P.R.China.
Chinese herbal medicine has offered a great treasure for discovering intrinsically bioactive low molecular weight gelators (LMWGs). Herein, the two-component hydrogels comprising glycyrrhizic acid (GA) and puerarin (PUE), the primary bioactive components, respectively, from herbs and are successfully prepared. Combined spectroscopic characterizations reveal that hydrogen bonds are formed between GA and PUE molecules, which further drives the growth of nanofiber assemblies into gel networks.
View Article and Find Full Text PDFMolecules
December 2024
Institute of Chemical Biology and Fundamental Medicine SB RAS, Novosibirsk 630090, Russia.
The development of new convenient tools for the design of multicomponent nucleic acid (NA) complexes is one of the challenges in biomedicine and NA nanotechnology. In this paper, we analyzed the formation of hybrid RNA/DNA concatemers and self-limited complexes by a pair of oligonucleotides using UV melting, circular dichroism spectroscopy, and a gel shift assay. Effects of the size of the linker between duplex-forming segments of the oligonucleotides on complexes' shape and number of subunits were compared and systematized for RNA/DNA, DNA/DNA, and RNA/RNA assemblies.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
December 2024
Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Hubei Key Laboratory of Polymer Science, School of Materials Science and Engineering, Hubei University, Wuhan, Hubei, 430062, P. R. China.
Polynuclear Au(I) cluster photocatalysts, known for their high activity and stability, hold substantial potential in organic synthetic chemistry. This study synthesized two Au(I) supramolecular cluster catalysts with different nuclearities: a tetranuclear cluster, C1 ([(dppmAu)L] • PF ), and a hexadecanuclear cluster, C2 [(dppmAu)(Au)(L)] • 4PF , through a multicomponent stepwise self-assembly approach. Both cluster structures feature aurophilicity interaction motifs that endow them with exceptional photocatalytic performance, exhibiting optical band gaps of 2.
View Article and Find Full Text PDFFront Chem
November 2024
Laboratório Nanotecnologia e Engenharia de Processos-NEP, Universidade de São Paulo, Lorena, São Paulo, Brazil.
ACS Appl Bio Mater
December 2024
Department of Pharmacy and Interuniversity Research Centre on Bioactive Peptides "Carlo Pedone" (CIRPeB), University of Naples "Federico II", Via T. De Amicis 95, Naples 80145, Italy.
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