Polymer-based nanocatalysts have been extensively utilized in advanced drug delivery due to their versatility and high reactivity. Incorporating bioorthogonal transition metal catalysts (TMCs) into polymers generates bioorthogonal nanocatalysts capable of producing therapeutic agents , minimizing off-target effects. The supramolecular interactions within the polymer matrix, including hydrophobic interactions and aromatic stacking, play a crucial role in catalytic properties. Our study focuses on co-engineering the host polymer structure and the catalyst encapsulation process to achieve precise control over the supramolecular interactions within the nanoenvironment. By carefully engineering these interactions, we successfully generate thermo-responsive nanocatalysts with a resolution of 6 °C. These nanocatalysts demonstrate thermal activation of the catalytic deprotection of a pro-antibiotic, with concomitant external control of bacterial biofilm eradication.
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http://dx.doi.org/10.1039/d4nr03083d | DOI Listing |
Macromol Rapid Commun
January 2025
School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China.
A novel aggregation-induced emission (AIE)-based artificial light-harvesting system (LHS) is successfully assembled via the host-guest interaction of bis-naphthylacrylonitrile derivative (BND), water-soluble pillar[5]arene (WP5), and sulforhodamine 101 (SR101). After host-guest assembly, the formed WP5⊃BND complexes spontaneously self-aggregated into WP5⊃BND nanoparticles (donors) and SR101 (acceptors) is introduced into WP5⊃BND to fabricate WP5⊃BND-SR101 LHS. Through the investigation of energy transfer between donors and acceptors, the artificial light-harvesting processes are certified in WP5⊃BND-SR101 LHS and the absolute fluorescence quantum yields (Φ) are significantly improved from 8.
View Article and Find Full Text PDFAnal Chem
January 2025
College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
The development of a sensory signal amplification approach is very crucial for rapid and precise detection of aflatoxin B (AFB). However, such approaches remain scarce due to the weak interactions between AFB and the sensing probes. Herein, the first example of a dual-excitation fluorescent platform for antibody-free AFB detection is reported, which is assembled by an ordered π-π stack of cationic perylene derivative (PTHA) and tris(2,2'-bipyridine)ruthenium(II) [Ru(bpy)].
View Article and Find Full Text PDFNat Commun
January 2025
Matériaux et Phénomènes Quantiques, Université Paris Cité, CNRS UMR 7162, Paris, France.
We present an optomechanical method for locally measuring the rheological properties of complex fluids in the ultra-high frequency range (UHF). A mechanical disk of microscale volume is used as an oscillating probe that monitors a liquid at rest, while the oscillation is optomechanically transduced. An analytical model for fluid-structure interactions is used to deduce the rheological properties of the liquid.
View Article and Find Full Text PDFLangmuir
January 2025
School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, China.
Spin glass (SG), in which the spins are glassy, has attracted broad attention for theoretical study and prospective application. SG states are generally related to disordered or frustrated spin systems, which are usually observed in inorganic magnets. Herein, supramolecular magnetic ionic liquid (TMTBDI[FeCl]) self-assemblies are prepared by solution self-assembly via hydrophobic and π-π stacking interactions.
View Article and Find Full Text PDFChemistry
January 2025
Tsinghua University, Department of Chemistry, No.1,Tsinghua Yuan Road, 100084, Beijing, CHINA.
Self-healing materials can recover the material from physical damage, and extend the life of equipment. Metal coordination bonds are supramolecular interactions with tunable stability and sensitivity to external stimuli, which are crucial for developing self-healing materials. Incorporating metal coordination bonds into elastomers and coatings can give materials the ability to repair damage and improve the material performance.
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