Light and Guest Responsive Behavior in a Porous Coordination Network Enabled by Reversible [2 + 2] Photocycloaddition DOI Creative Commons
Mei‐Yan Gao, Lunjie Liu, Chenghua Deng

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(34)

Published: June 12, 2024

Abstract Stimuli‐responsive physisorbents that undergo reversible structural transformations induced by external stimuli (e.g. light, guests, or heat) offer the promise of utility in gas storage and separation. Whereas reports on guest light‐responsive sorbents have increased recent years, we are unaware exhibit both light guest‐induced transformations. Herein, report square lattice, sql , topology coordination network Zn(fba)(bis) ⋅ 2DMF ( sql‐5,6‐Zn‐α 5=trans‐4,4′‐bis(1‐imidazolyl)stilbene=bis, 6=2,2‐bis(4‐carboxyphenyl)hexafluoropropane=H 2 fba) underwent single‐crystal‐to‐single‐crystal transformation (SCSC) upon activation, affording nonporous sql‐5,6‐Zn‐β . Parallel alignment at 3.23 Å olefinic moieties adjacent bis ligands enabled SCSC [2+2] photocycloaddition exposure to UV (365 nm) sunlight. thereby transformed mot‐5,6‐Zn‐α which was subsequently activated narrow pore phase mot‐5,6‐Zn‐β exhibited S‐shaped adsorption isotherms characteristic changes when exposed CO 195 K (type‐F–IV type F–I, respectively). Cycling experiments conducted reduced particle size after cycle 1 into a rare example shape memory network, sql‐5,6‐Zn‐γ Insight this smorgasbord gained from situ PXRD, single crystal XRD H NMR spectroscopy experiments.

Language: Английский

Ultramicroporous Lonsdaleite Topology MOF with High Propane Uptake and Propane/Methane Selectivity for Propane Capture from Simulated Natural Gas DOI Creative Commons
Chenghua Deng, Li Zhao, Mei‐Yan Gao

et al.

ACS Materials Letters, Journal Year: 2023, Volume and Issue: 6(1), P. 56 - 65

Published: Dec. 1, 2023

Propane (C3H8) is a widely used fuel gas. Metal–organic framework (MOF) physisorbents that are C3H8 selective offer the potential to significantly reduce energy footprint for capturing from natural gas, where typically present as minor component. Here we report recovery performance of previously unreported lonsdaleite, lon, topology MOF, chiral metal–organic material, [Ni(S-IEDC)(bipy)(SCN)]n, CMOM-7. CMOM-7 was prepared three low-cost precursors: Ni(SCN)2, S-indoline-2-carboxylic acid (S-IDECH), and 4,4′-bipyridine (bipy), its structure determined by single crystal X-ray crystallography. Pure gas adsorption isotherms revealed exhibited high uptake (2.71 mmol g–1) at 0.05 bar, an indication higher affinity than both C2H6 CH4. Dynamic column breakthrough experiments afforded purity capture mixture comprising C3H8/C2H6/CH4 (v/v/v = 5/10/85). Despite dilute stream, registered dynamic time difference between 79.5 min g–1, superior those previous MOF studied under same flow rate. Analysis crystallographic data Grand Canonical Monte Carlo simulations provides insight into two binding sites in CMOM-7, which driven C–H···π hydrogen bonding interactions.

Language: Английский

Citations

12
Switching Adsorbent Layered Material that Enables Stepwise Capture of C8 Aromatics via Single-Crystal-to-Single-Crystal Transformations DOI Creative Commons
Mei‐Yan Gao,

Shi‐Qiang Wang,

Andrey A. Bezrukov

et al.

Chemistry of Materials, Journal Year: 2023, Volume and Issue: 35(23), P. 10001 - 10008

Published: Nov. 30, 2023

Separation of the C8 aromatic isomers, xylenes (PX, MX, and OX) ethylbenzene (EB), is important to petrochemical industry. Whereas physisorptive separation an energy-efficient alternative current processes, such as distillation, physisorbents do not generally exhibit strong selectivity. Herein, we report mixed-linker square lattice (sql) coordination network [Zn2(sba)2(bis)]n·mDMF (sql-4,5-Zn, H2sba or 4 = 4,4'-sulfonyldibenzoic acid, bis 5 trans-4,4'-bis(1-imidazolyl)stilbene) its sorption properties. sql-4,5-Zn was found high uptake capacity for liquid aromatics (∼20.2 wt %), best our knowledge, it first sorbent selectivity PX, EB, MX over OX binary, ternary, quaternary mixtures from gas chromatography. Single-crystal structures narrow-pore, intermediate-pore, large-pore phases provided insight into phase transformations, which were enabled by flexibility linker ligands changes in grid geometry interlayer distances. This work adds library two-dimensional networks that uptake, thanks clay-like expansion, selectivity, shape-selective binding sites, isomers.

Language: Английский

Citations

11
Customizing Quasi-Discrete Pores with Gating Flexibility in 2D Supramolecular Isomers for Kinetic Propyne/Propylene Separation DOI

Shuixiang Zou,

Cheng Chen,

Yuanzheng Liu

et al.

ACS Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1344 - 1351

Published: March 12, 2025

Language: Английский

Citations

0
Robust Anion-Pillared Ultramicroporous Material for C2H2/C2H4 Separation with High C2H2 Uptake and Selectivity DOI

Jinghong Yang,

Liming Lin,

Shuixiang Zou

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Removing trace amounts of C2H2 from C2H2/C2H4 mixtures for C2H4 purification is crucial but extremely challenging. In this work, by introducing SiF62– with specific recognition C2H2, we constructed a robust adsorbent, FJI-W88, high adsorption capacity and excellent separation selectivity. FJI-W88 not only exhibits ultrahigh uptake at 0.01 bar (2.80 mmol g–1) also shows exceptional (1/99) IAST selectivity 698. Column breakthrough experiments further demonstrate that can obtain purity (≥99.95%) yield (230.0 mol kg–1) mixtures. Additionally, the performance basically unaffected under harsh conditions, such as temperature humidity.

Language: Английский

Citations

0
Pore space optimization of hybrid ultramicroporous material for exceptional one-step C2H4 purification from C2H2/CO2/C2H4 mixture DOI

Hong‐Xiang Nie,

Hongwei Chen, Ting Wang

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 512, P. 162717 - 162717

Published: April 16, 2025

Language: Английский

Citations

0
Functionalization of a clay mineral with Sn species for anti-inflammatory removal DOI
Lucilane Gomes Oliveira, Denise B. França, Luís H. de Oliveira

et al.

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 163313 - 163313

Published: April 1, 2025

Language: Английский

Citations

0
Recent progress in metal–organic frameworks for the separation of gaseous hydrocarbons DOI
Jing‐Hong Li,

Jun‐Xian Chen,

Rui‐Biao Lin

et al.

Materials Chemistry Frontiers, Journal Year: 2023, Volume and Issue: 7(22), P. 5693 - 5730

Published: Jan. 1, 2023

This review highlights recent research progress in MOF materials for the important separation of gaseous hydrocarbons, especially ethylene, propylene, and butadiene. The uniqueness MOFs to achieve those is also outlined.

Language: Английский

Citations

10
Phase switching and shape-memory effect in a molecular material: revisiting the Werner complex [Ni(4-MePy)4(NCS)2] DOI Creative Commons

Shi‐Qiang Wang,

Shaza Darwish, Catiúcia R. M. O. Matos

et al.

Inorganic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(11), P. 3254 - 3262

Published: Jan. 1, 2024

A well-known Werner complex, [Ni(4-methylpyridine) 4 (NCS) 2 ], has been revisited to investigate its phase switching and shape-memory effect induced by p -xylene vapor.

Language: Английский

Citations

3
Effect of Polymorphism on the Sorption Properties of a Flexible Square-Lattice Topology Coordination Network DOI Creative Commons
Aizhamal Subanbekova, Andrey A. Bezrukov, Volodymyr Bon

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: unknown

Published: April 26, 2024

The stimulus-responsive behavior of coordination networks (CNs), which switch between closed (nonporous) and open (porous) phases, is interest because its potential utility in gas storage separation. Herein, we report two polymorphs a new square-lattice (sql) topology CN, X-sql-1-Cu, formula [Cu(Imibz)2]n (HImibz = {[4-(1H-imidazol-1-yl)phenylimino]methyl}benzoic acid), isolated from the as-synthesized CN X-sql-1-Cu-(MeOH)2·2MeOH, subsequently transformed to narrow pore solvate, X-sql-1-Cu-A·MeOH, upon mild activation (drying air or heating at 333 K under nitrogen). X-sql-1-Cu-A·MeOH contains MeOH cavities, was removed through exposure vacuum for 2 h, yielding nonporous (closed) phase X-sql-1-Cu-A. In contrast, more dense polymorph, X-sql-1-Cu-B, obtained by exposing X-sql-1-Cu-(MeOH)2·2MeOH directly h. Gas sorption studies conducted on X-sql-1-Cu-A X-sql-1-Cu-B revealed different switching behaviors phases (X-sql-1-Cu·CO2 X-sql-1-Cu·C2H2), with gate-opening threshold pressures CO2 195 C2H2 278 K. Coincident situ powder X-ray diffraction that after first cycle CO2-induced transformation thereafter reversible. results presented herein provide insights into relationship effect polymorphism properties. To best our knowledge, whereas sql such as X-sql-1-Cu are widely studied terms their structural properties, this study represents only second example an in-depth properties polymorphic networks.

Language: Английский

Citations

3
Cross‐Linking CdSO4‐Type Nets with Hexafluorosilicate Anions to Form an Ultramicroporous Material for Efficient C2H2/CO2 and C2H2/C2H4 Separation DOI
Dan Li, Mei‐Yan Gao, Chenghua Deng

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: May 15, 2024

Abstract A 4 .6 10 .8 topology hybrid ultramicroporous material (HUM), {[Cu 1.5 F(SiF 6 )(L) 2.5 ]·G} n , (L = 4,4′‐bisimidazolylbiphenyl, G guest molecules), 1 formed by cross‐linking interpenetrated 3D four‐connected CdSO ‐type nets with hexafluorosilicate anions is synthesized and evaluated in the context of gas sorption separation herein. first HUM functionalized two different types fluorinated sites (SiF 2− F − anions) lining along pore surface. The optimal size (≈5 Å) combining mixed high‐density electronegative enable to preferentially adsorb C 2 H over CO hydrogen bonding interactions a high isosteric heat adsorption ( Q st ) ≈42.3 kJ mol −1 at zero loading. pronounced discriminatory behaviors lead excellent performance for /CO /C that surpasses many well‐known sorbents. Dynamic breakthrough experiments are conducted confirm practical capability which reveal an impressive factor 6.1 equimolar mixture. Furthermore, molecular simulation density functional theory (DFT) calculations validate strong binding stems from chelating fix between SiF anion coordinated anion.

Language: Английский

Citations

2