Yoshinori Takashima

CCDC 2542484: Experimental Crystal Structure Determination

Bin Sun, Jiaxiong Liu, Kenji Yamaoka, Koki Nishida et autres

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, …

CCDC 2542483: Experimental Crystal Structure Determination

Bin Sun, Jiaxiong Liu, Kenji Yamaoka, Koki Nishida et autres

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, …

Interfacial switching-driven photoactuator adhesives for selective peeling and substrate recycling

Yunpeng Qian, Jiaxiong Liu, Kenji Yamaoka, Sho Kosaba et autres

Photoresponsive adhesives that enable controlled detachment are attracting increasing attention. However, most photoresponsive adhesives rely on internal cohesion switching, which often leaves adhesive residues on substrates. Here, we develop interfacial switching-driven photoresponsive adhesion systems inspired by actuator science. The adhesives, composed of …

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Upcycling Waste Cyclic Poly(phenylene sulfide) as Valuable Movable Crosslinkers for Toughening and Ring-Size-Controlled Enzymatic Degradation of Polycaprolactone

Bin Sun, Jiaxiong Liu, Kenji Yamaoka, Koki Nishida et autres

Abstract Reconciling mechanical robustness with controlled end-of-life degradability represents a central challenge in the design of sustainable polymeric materials. Here, we develop a solvent-free in situ ring-opening polymerization strategy for incorporating size-specific cyclic poly(phenylene sulfide) macrocycles (c[n]PS, n = 5, 7, and …

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Influence of Adding Cyclodextrin Derivatives on the Mechanical and Thermal Properties of Glassy Polymers

Rinsei Toda, Kenji Yamaoka, Yoshinori Takashima

ABSTRACT The use of naturally derived materials for reinforcing and modifying polymer materials contributes to the development of sustainable polymer materials and reduces petroleum consumption. Cyclodextrin (CD) derivatives are promising naturally derived additives for reinforcing and modifying polymer materials. In this study, …

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Real‐Time Stress Visualization of Hydrogels Enabled by Supramolecularly Switched Stretch‐Induced Phase Separation

Sooyeon Noh, Akihide Sugawara, Naoaki Ishihara, Takashi Konishi et autres

The visualization of mechanical stress in soft materials is highly desirable; however, real-time optical readouts using conventional sensing approaches are problematic because mechanophore-based systems typically require strong threshold-type activation with slow recovery. Herein, we report supramolecular hydrogels that enable the continuous and …

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Influence of Ring Size on the Mechanical Properties of Movable Cross-Linked Polymers: Experimental and Simulation Studies

Kenji Yamaoka, Chao Luo, Osamu Urakawa, Yasutomo UETSUJI et autres

Movable cross-linked polymers exhibit unique mechanical properties arising from the sliding motion of rings along polymer chains and have attracted considerable attention as a promising strategy to overcome the conventional trade-off between elasticity and toughness in polymer materials. Despite their importance, the …

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Fabrication of Hierarchically Porous Monoliths Based on Adamantane-Modified Cellulose via Thermally Induced Phase Separation

Sooyeon Noh, Akihide Sugawara, Yoshinori Takashima, Hiroshi Uyama

The development of porous functional materials derived from polysaccharides contributes to sustainable materials design. Thermally induced phase separation (TIPS) enables the formation of cocontinuous monoliths with tunable pore architectures. However, solvent selection tailored to specific polymer species remains a critical bottleneck, necessitating …

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Rheological Evidence of Reversible Host–Guest Complex Formation in Polymers

Kenji Yamaoka, Yoshinori Takashima

Understanding how reversible interactions influence polymer dynamics is essential for designing advanced functional materials. Host–guest complexes represent a versatile class of reversible interactions owing to their molecular selectivity and tunable bonding strength. Although host–guest complexes have been widely utilized as reversible cross-links …

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Light-Programmable Polyester Networks with Movable Cross-Links for On-Demand Enzymatic Degradation

Xin Zhou, Jiaxiong Liu, Kenji Yamaoka, Ryohei Ikura et autres

The design of sustainable materials that integrates mechanical toughness with on-demand degradability remains a central challenge in the development of materials science. Here, we present a photoresponsive polyester capable of light-regulated enzymatic degradation through movable cross-links. The material consists of a poly(ε-caprolactone) …

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Macrophage metabolic exhaustion and PANoptotic cell death drive chronic tissue inflammation in rheumatoid arthritis

Tao Huang, Yoshinori Takashima, Jitendra Kumar, Jose Morales et autres

In the autoimmune disease rheumatoid arthritis, the inflammatory response evolves from protective to pathogenic, causing tissue destruction. Rheumatoid synovitis persists despite the presence of pro-repair SELENOP hi MerTK + CD206 + macrophages, suggesting that these cells acquire pro-arthritogenic functions. Patient-derived synovial SELENOP …

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Recent advances in designing high-performance and enzymatically degradable plastics

Jiaxiong LIU, Xin Zhou, Hiroshi Uyama, Yoshinori Takashima

Plastics have become indispensable in modern life, yet their end-of-life waste continues to accumulate, causing severe environmental pollution and posing risks to ecosystems and human health. This urgent challenge has driven the development of sustainable plastics as alternatives to conventional persistent plastics, …

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