Revealing the Flexibility of Inorganic Sub-Nanowires by Single-Molecule Force Spectroscopy

Shi, Yuang; Shi, Wenxiong; Zhang, Simin; Wang, Xun

doi:10.31635/ccschem.023.202302729

CCS Chem

2023

DOI: 10.31635/ccschem.023.202302729

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Revealing the Flexibility of Inorganic Sub-Nanowires by Single-Molecule Force Spectroscopy

Yuang Shi

Wenxiong Shi

Simin Zhang

et al.

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2024

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Cited by 12 publications

(2 citation statements)

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“…21,22 Nevertheless, the study of the emergent subnanometer particle materials is still in infancy, which calls for a deeper understanding of their molecular mechanism. 23,24 The key challenges regarding the design and precise synthesis of model systems and the comprehensive spatiotemporal characterization are waiting to be resolved.…”

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confidence: 99%

“…When the particle sizes narrow down to several or subnanometer ranges, , the energy scale for their diffusive motion becomes closer to that of thermal fluctuation, enabling the modulation of their dynamics via thermal fields. Moreover, the volume fraction of particle surface structure is high, and the surface structure dynamics, in addition to the particle’s diffusive dynamics, should be dominant in governing materials’ physical properties. , Nevertheless, the study of the emergent subnanometer particle materials is still in infancy, which calls for a deeper understanding of their molecular mechanism. , The key challenges regarding the design and precise synthesis of model systems and the comprehensive spatiotemporal characterization are waiting to be resolved.…”

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confidence: 99%

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Exploration of Molecular Nanoparticles as Soft Structural Materials and Their Structure–Property Relationship

Yin,

Liu-Fu,

Yang

et al. 2024

J. Phys. Chem. Lett.

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The search for alternative chemical systems other than polymers with chain topologies for soft structural materials raises general interests in fundamental materials and chemical sciences. It is also appealing from an engineering perspective for the urgent need to resolve the typical trade-offs of polymer systems. Herein, a subnanometer molecular cluster, polyhedral oligomeric silsesquioxanes, is assembled into molecular nanoparticles (MNPs) with star topology. Broadly tunable viscoelasticity can be realized by fine-tuning the MNPs' deformability. Being analogous to polymeric systems, the hierarchical structural relaxation dynamics can be observed, and their relaxation time and temperature dependence are dominated by the linker flexibilities. This not only provides microscopic understanding on MNP's unique viscoelasticity but also offers enormous opportunities for modulating their mechanical properties via linker engineering. Our work proves the possibility of applying structural units with particle topologies for the design of soft structural materials.

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confidence: 99%

mentioning

confidence: 99%

Exploration of Molecular Nanoparticles as Soft Structural Materials and Their Structure–Property Relationship

Yin,

Liu-Fu,

Yang

et al. 2024

J. Phys. Chem. Lett.

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Freestanding Scattering Polarizer Assembled with Subnanowires and Liquid Crystals

Zhang,

Li,

Shi

et al. 2024

Adv Funct Materials

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Conventional absorbing, reflective and scattering polarizers are facing various issues, such as severe optical loss, necessary oblique incidence, humidity sensitivity or aging‐caused failure. Subnanowires (SNWs) with polymer‐analogue properties, intrinsic order, and multi‐level interactions attract widespread attention as superior candidates for building blocks of polarizers. Herein, freestanding and flexible liquid crystal (LC)‐SNW films are prepared through a facile directional coating method, not only exhibiting good stability for water and repeated temperature fluctuations, but also showing good polarization performance for visible and near‐infrared (NIR) light, with the polarization degree (P) values of 93%, 84%, and 63% at the wavelengths of 580, 780 and 960 nm. And the average haze achieves 85%. The LC‐SNW films have great potential in applications for polarizers, holographic projection imaging and flexible optical devices.

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Highly Deformable and Robust Ionic Structure for Multi‐Tissue Adaptive Hemostatic Sponges

Song,

Wang,

Zhang

et al. 2024

Adv Funct Materials

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Accidental trauma is always accompanied by tissue defects with noncompressible hemorrhages. Deformable and tough biomaterials are desirable for self‐compressible hemostasis, although their preparation is challenging. Here, a critical‐size calcium phosphate (C–CaP) with polymer‐like high deformability and mineral‐like high bending strength is prepared, which is hybridized with silk fibroin (SF) to fabricate a hemostatic sponge (SF‐C). C–CaP endows SF‐C with an ultrahigh elastic modulus (36.0 kPa) among analogous materials, leading to an ultrafast water absorption rate (1.2 g cm−3 s−1) and space‐filling rate (200.0%/s). The deformability of the SF‐C sponge further enables self‐adaptability to defects with micrometre‐scale precision. Consequently, SF‐C achieves rapid hemostasis in both damaged soft tissues and hard tissues in rats, resulting in less blood loss and a shorter hemostatic time than those of clinical materials. This study provides a promising hemostatic material for the treatment of hemorrhages in defective tissues and expands the current knowledge by revealing the critical‐sized ionic structure and unique mechanics of C–CaP.

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Revealing the Flexibility of Inorganic Sub-Nanowires by Single-Molecule Force Spectroscopy

Cited by 12 publications

References 0 publications

Exploration of Molecular Nanoparticles as Soft Structural Materials and Their Structure–Property Relationship

Exploration of Molecular Nanoparticles as Soft Structural Materials and Their Structure–Property Relationship

Freestanding Scattering Polarizer Assembled with Subnanowires and Liquid Crystals

Highly Deformable and Robust Ionic Structure for Multi‐Tissue Adaptive Hemostatic Sponges

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