Metal–organic cages for gas adsorption and separation

Zeng, Qing-Wen; Hu, Lianrui; Niu, Yulian; Wang, Dehua; Kang, Yan; Jia, Haidong; Dou, Wei-Tao; Xu, Lin

doi:10.1039/d3cc05935a

Cited by 12 publications

(2 citation statements)

References 89 publications

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“…They possess tailorable structures at the atomic level. Recently, various controllable methods for preparing stable MOCs with diverse metal centers and outer organic ligands have been developed, laying the foundation for their functional regulation and application explorations. − Thus, far, MOCs have gained interest in various areas, including catalysis, gas adsorption and separation, biomedicine, and nonlinear optics. , Recently, considerable efforts have been devoted to promoting the use of MOCs in advanced photolithography, e.g., extreme-ultraviolet lithography (EUVL; 13.5 nm), state-of-the-art techniques in the semiconductor industry to manufacture sub-5 nm node chips. − The properties of MOCs, including small sizes, well-defined structures, high extreme-ultraviolet (EUV) absorption cross sections, and high reactivity under EUV irradiation, make them promising photoresists for EUVL. − Accordingly, designing and tuning these properties and understanding their fundamental chemistry under EUV irradiation are essential to promote their applications.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, various controllable methods for preparing stable MOCs with diverse metal centers and outer organic ligands have been developed, laying the foundation for their functional regulation and application explorations. 1−4 Thus, far, MOCs have gained interest in various areas, including catalysis, 5 gas adsorption and separation, 6 biomedicine, 7 and nonlinear optics. 8,9 Recently, considerable efforts have been devoted to promoting the use of MOCs in advanced photolithography, e.g., extremeultraviolet lithography (EUVL; 13.5 nm), state-of-the-art techniques in the semiconductor industry to manufacture sub-5 nm node chips.…”

Section: Introductionmentioning

confidence: 99%

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Additive-Assisted Forming High-Quality Thin Films of Sn–Oxo Cluster for Nanopatterning

Zhao,

Huang,

et al. 2024

ACS Appl. Mater. Interfaces

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Recently, metal−oxo clusters (MOCs) have attracted significant interest in fabricating nanoscale patterns in semiconductors via lithography. However, many MOCs are highly crystalline, making it difficult for them to form films and hindering subsequent nanopatterning processes. In this study, we developed a novel and simple method to enhance the filmforming ability of aromatic tetranuclear Sn−oxo clusters by adding additives. Theoretical calculations and Fourier-transform infrared (FTIR) analysis revealed the formation of intermolecular hydrogen bonds between the Sn−oxo clusters and additives, which induced a crystal−gel phase transition at −20 °C, thereby inhibiting the easy crystallization of the Sn− oxo clusters. High-quality and uniform thin films with surface roughness below 0.3 nm were prepared via spin coating. The obtained thin films exhibited good lithographic performance under deep ultraviolet (DUV), electron beam, and extreme-ultraviolet irradiation without a photo acid generator/photoinitiator, and 13-and 21 nm-wide line patterns were obtained on the films via electron-beam and extreme-ultraviolet lithographies. This study will pave the way for the further investigation of novel MOCs for advanced lithography and other thin-film applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Additive-Assisted Forming High-Quality Thin Films of Sn–Oxo Cluster for Nanopatterning

Zhao,

Huang,

et al. 2024

ACS Appl. Mater. Interfaces

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Metallo‐Supramolecular Helicates as Surface‐Enhanced Raman Scattering (SERS) Substrates with High Tailorability

Song,

Zhang,

Dou

et al. 2024

Angewandte Chemie

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The exploration of novel functionalized supramolecular coordination complexes (SCCs) can enable new applications in domains that include purification and sensing. In this study, employing a coordination‐driven self‐assembly strategy, we designed and prepared a series of benzochalcogenodiazole‐based metallohelicates as high‐efficiency charge‐transfer surface‐enhanced Raman scattering (SERS) substrates, expanding the range of applications for these metallohelicates. Through structural modifications, including the substitution of single heteroatoms on ligands, replacement of coordinating metals, and alteration of ligand framework linkages, the Raman performance of these metallohelicates as substrates were systematically optimized. Notably, the SERS enhancement factors (EFs) of the metallohelicate‐based SERS substrates were significantly enhanced to levels as high as 1.03×107, which rivals the EFs of noble metals devoid of “hot spots”. Additionally, the underlying Raman enhancement mechanisms of these metallohelicates have been investigated through a combination of control experiments and theoretical calculations. This study not only demonstrates the utility of metallohelicates as SERS substrates but also offers insights and materials for the development of high‐efficiency new charge‐transfer SERS substrates.

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Improving the Cellular Internalization of Zr(IV) Nanocages by Tuning Hydrophilicity and Lipophilicity

Du,

Lyu,

et al. 2024

Angewandte Chemie

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Nanoscale molecular materials have emerged as a new class of compounds at the nanometer scale with well‐defined chemical structures, remarkable uniformity and high reproducibility. Among these materials, zirconium‐based metal‐organic cages (MOCs) have attracted significant attention due to their exceptional stability and applications in catalysis, recognition and separation and so on. However, their poor water solubility impedes their biomedical applications. In this study, decorating the ligand with Ru(II) complexes can not only improve the water solubility but also endow bright red fluorescence with large Stokes shift (180 nm). Notably, butyl‐modification of the cyclopentadiene rings can significantly enhance the cell uptake (100 folds) of nanocages via actin‐ and dynamin‐mediated endocytosis. The unique advantages and easy modifiability of these nanocages make them highly promising candidates for diverse biological applications.

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Metal–organic cages for gas adsorption and separation

Abstract: In this highlight, we summarize the design principle and representative examples of MOCs for gas adsorption and separation, with the aim of providing a theoretical basis for designing more MOCs that can adsorb and purify gas.

Cited by 12 publications

References 89 publications

Additive-Assisted Forming High-Quality Thin Films of Sn–Oxo Cluster for Nanopatterning

Additive-Assisted Forming High-Quality Thin Films of Sn–Oxo Cluster for Nanopatterning

Metallo‐Supramolecular Helicates as Surface‐Enhanced Raman Scattering (SERS) Substrates with High Tailorability

Improving the Cellular Internalization of Zr(IV) Nanocages by Tuning Hydrophilicity and Lipophilicity

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