Physicochemical Methods for the Structuring and Assembly of MOF Crystals

Accounts of Chemical Research, Год журнала: 2024, Номер 57(15), С. 2105 - 2116

Опубликована: Июль 26, 2024

ConspectusMetal-organic frameworks (MOFs) are promising for various applications through the creation of innovative materials and assemblies. This potential stems from their modular nature, as diverse metal ions organic linkers can be combined to produce MOFs with unique chemical properties lattice structures. Following extensive research on design postsynthetic modification MOF lattices at molecular level, increasing attention is now focused next hierarchical level: controlling morphology crystals subsequent assembly positioning create functional composites.Beyond well-established methods regulate crystal size shape nucleation coordination modulation, physicochemical techniques leveraging wetting effects, interparticle interactions, magnetic or electric fields offer attractive avenues structuring MOFs. These facilitate alignment yield superstructures. While our group primarily focuses directing orientation using external stimuli such fields, we also explore synthesis liquid interfaces depletion force-assisted packing.This account highlights journey progress in developing morphology, assembly, orientation, crystals, placed context work by other groups. First, examine commonly utilized that employ liquid-liquid air-liquid spatially confine reactions, allowing us access morphologies mushroom-like Janus particles. We discuss strategies concentrating packing into superstructures, utilizing fluid spatial confinement forces, entropic sedimentation.A particularly compelling challenge expanding applicability how manipulate free-standing crystals. issue especially important because typically produced loose powders, industrial material processing generally more efficient when fluidized. has been conducted regarding growth substrates both positional orientational control, there a clear need similar precision dispersed matrix. Our thus relatively new, yet powerful approach which offers unprecedented control over complementing substrates. In this Account, provide foundational background discussions interactions between these including critical considerations effective manipulation techniques. advantages applications, briefly application areas, photonics, smart like soft robotics absorbents, sensing. Account well-organized aligned randomly oriented ones owing enhanced selectivity performance. It underscores importance specialized advance science engineering, encouraging reader approaches.

Язык: Английский

Dual-Shell Nanocomposites for Enhanced Therapeutic Applications in Cancer Treatment

ACS Applied Nano Materials, Год журнала: 2025, Номер 8(5), С. 2280 - 2290

Опубликована: Янв. 24, 2025

A combination of endoskeleton and exoskeleton in a dual shell has been considered for simultaneously improving the core–satellite binding efficiency stability. two-step preassembling-postgrowth approach fabricating stimulus-responsive core–shell–satellite–shell (CSSS) nanocomposites. CSSS therapeutic nanosystem designed controllable release drug situ monitoring chemotherapy via mode. Incorporation bifunctional SH-PNIPAM-COOH (TPNIC) nanocomposites plays role cross-linking core–satellites Raman enhancement. On one hand, TPNIC swelling status can act as cross-linker assembling Au satellites on PFe3O4 (PEI-functionalized Fe3O4) core. other adjust alteration temperature; moreover, it induces optical hot-spot generation giving coupling plasmonic effect to produce much stronger SERS performance than simple assembling. Thus, collapse layer above lower critical solution temperature (LCST) be adopted enhanced chemotherapeutics releasing doxorubicin tumor microenvironment (TME). The contribute delivering anticancer efficiently penetrating cell membrane retarding TME. obvious advantages are its facile magnetic recycling regeneration so realize sustainable tumor.

Язык: Английский

A Study of Electroplated Nanoporous Copper Using Aberration-Corrected Transmission Electron Microscopy

Nanomaterials, Год журнала: 2024, Номер 14(6), С. 487 - 487

Опубликована: Март 8, 2024

Nanoporous Cu foam is widely applied in many fields such as the packaging of electronic power devices. In this study, a sandwich-structured Cu-Zn eutectic alloy precursor composed Cu0.53Zn0.47/Cu5Zn8/Cu0.53Zn0.47 prepared through electroplating. The surface layer precursor, Cu0.53Zn0.47, has flat with numerous grain boundaries, which effectively promotes its dealloying behavior. By contrast, Cu5Zn8 porous structure, behavior at center precursor. Cu0.53Zn0.47 dominated by coherent diffusion atoms, and crystal lattice orientation show no changes before after dealloying. requires renucleation crystals; process, atoms are transported to capillary forces form clusters, nucleate grow.

Язык: Английский