Stimuli -triggered fluoro-switching in metal–organic frameworks: applications and outlook

2021 ◽  
Vol 50 (12) ◽  
pp. 4067-4090
Author(s):  
Ranadip Goswami ◽  
Tapan K. Pal ◽  
Subhadip Neogi
Keyword(s):  
Real Time ◽  
Metal Organic Frameworks ◽  
Structure Property ◽  
Real Time Monitoring ◽  
Toxic Compounds ◽  
Fluorescence Switching ◽  
Metal Organic ◽  
External Stimuli

The efficacy of MOFs in the field of host–guest mediated fluorescence switching is discussed with specific importance on external stimuli assisted real-time monitoring of multiple classes of toxic compounds that highlight the importance of structure–property synergies.

Real-Time Monitoring of Dissolved Oxygen with Inherent Oxygen-Sensitive Centers in Metal–Organic Frameworks

2016 ◽  
Vol 28 (8) ◽  
pp. 2652-2658 ◽  
Author(s):  
Jian Yang ◽  
Zhe Wang ◽  
Yongsheng Li ◽  
Qixin Zhuang ◽  
Jinlou Gu
Keyword(s):  
Dissolved Oxygen ◽  
Real Time ◽  
Metal Organic Frameworks ◽  
Real Time Monitoring ◽  
Oxygen Sensitive ◽  
Metal Organic

scholarly journals Manometric real-time studies of the mechanochemical synthesis of zeolitic imidazolate frameworks

2020 ◽  
Vol 11 (8) ◽  
pp. 2141-2147 ◽  
Author(s):  
Ivana Brekalo ◽  
Wenbing Yuan ◽  
Cristina Mottillo ◽  
Yuneng Lu ◽  
Yuancheng Zhang ◽  
...  
Keyword(s):  
Real Time ◽  
Mechanochemical Synthesis ◽  
Metal Organic Frameworks ◽  
Zeolitic Imidazolate Frameworks ◽  
Real Time Monitoring ◽  
Simple Method ◽  
Metal Organic

We demonstrate a simple method for real-time monitoring of mechanochemical synthesis of metal–organic frameworks, by measuring changes in pressure of gas produced in the reaction.

scholarly journals Frontispiece: Terpyridine‐Based 3D Metal–Organic‐Frameworks: A Structure–Property Correlation

2021 ◽  
Vol 27 (19) ◽  
Author(s):  
Syed Meheboob Elahi ◽  
Mukul Raizada ◽  
Pradip Kumar Sahu ◽  
Sanjit Konar
Keyword(s):  
Metal Organic Frameworks ◽  
Structure Property ◽  
Property Correlation ◽  
Metal Organic

Polymorphism in a Two-Dimensional Copper(I) Metal-Organic Framework with the ligand bis(4-pyridylthio)methane

CrystEngComm ◽  
2021 ◽  
Author(s):  
Olaya Paz Gomez ◽  
Rosa Carballo ◽  
Ana Belen Lago ◽  
Ezequiel M. Vazquez-Lopez
Keyword(s):  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Common Phenomenon ◽  
Two Dimensional ◽  
Structure Property ◽  
Crystalline Materials ◽  
Metal Organic ◽  
Organic Framework

Polymorphism is a common phenomenon in crystalline materials but it has barely been studied in the field of metal organic frameworks. The study of polymorphism is useful to investigate structure–property...

scholarly journals Temperature dependence of adsorption hysteresis in flexible metal organic frameworks

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Shamsur Rahman ◽  
Arash Arami-Niya ◽  
Xiaoxian Yang ◽  
Gongkui Xiao ◽  
Gang (Kevin) Li ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Capillary Condensation ◽  
Metal Organic Frameworks ◽  
Sorption Isotherms ◽  
Separation Performance ◽  
Process Simulations ◽  
Metal Organic ◽  
Flexible Metal ◽  
Pressure Swing ◽  
External Stimuli

Abstract“Breathing” and “gating” are striking phenomena exhibited by flexible metal-organic frameworks (MOFs) in which their pore structures transform upon external stimuli. These effects are often associated with eminent steps and hysteresis in sorption isotherms. Despite significant mechanistic studies, the accurate description of stepped isotherms and hysteresis remains a barrier to the promised applications of flexible MOFs in molecular sieving, storage and sensing. Here, we investigate the temperature dependence of structural transformations in three flexible MOFs and present a new isotherm model to consistently analyse the transition pressures and step widths. The transition pressure reduces exponentially with decreasing temperature as does the degree of hysteresis (c.f. capillary condensation). The MOF structural transition enthalpies range from +6 to +31 kJ·mol−1 revealing that the adsorption-triggered transition is entropically driven. Pressure swing adsorption process simulations based on flexible MOFs that utilise the model reveal how isotherm hysteresis can affect separation performance.

scholarly journals Cyclodextrins Modified/Coated Metal–Organic Frameworks

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1273 ◽  
Author(s):  
Huacheng Zhang ◽  
Zhaona Liu ◽  
Jian Shen
Keyword(s):  
Hybrid Materials ◽  
Metal Organic Frameworks ◽  
Supramolecular Interactions ◽  
Future Research ◽  
Covalent Bonds ◽  
Characterization Methods ◽  
Coated Metal ◽  
Metal Organic ◽  
Future Research Directions ◽  
External Stimuli

Recent progress about a novel organic–inorganic hybrid materials, namely cyclodextrins (CDs) modified/coated metal–organic frameworks (MOFs) is summarized by using a special categorization method focusing on the interactions between CDs and MOFs moieties, such as ligand–metal cations interactions, supramolecular interactions including host–guest interactions and hydrogen bonding, as well as covalent bonds. This review mainly focuses on the interactions between CDs and MOFs and the strategy of combining them together, diverse external stimuli responsiveness of CDs-modified/coated MOFs, as well as applications of these hybrid materials to drug delivery and release system, catalysis and detection materials. Additionally, due to the importance of investigating advanced chemical architectures and physiochemical properties of CDs-modified/coated MOFs, a separate section is involved in diverse characterization methods and instruments. Furthermore, this minireview also foresees future research directions in this rapidly developing field.

Two Novel Triazole-Based Metal - Organic Frameworks Consolidated by a Flexible Dicarboxylate Co-ligand: Hydrothermal Synthesis, Crystal Structure, and Luminescence Properties

2008 ◽  
Vol 61 (10) ◽  
pp. 813 ◽  
Author(s):  
En-Cui Yang ◽  
Qing-Qing Liang ◽  
Xiu-Guang Wang ◽  
Xiao-Jun Zhao
Keyword(s):  
Crystal Structure ◽  
Thermal Stability ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Structure Property ◽  
Hydrogen Bond Acceptor ◽  
X Ray Crystallography ◽  
Carboxylate Groups ◽  
Elemental Analyses ◽  
Metal Organic

To explore the effects of a co-ligand on the construction of mixed-ligand metal–organic frameworks (MOFs), two new triazole-based complexes with a flexible dicarboxylate as a co-ligand, {[Zn4(trz)4(gt)2(H2O)2](H2O)2}n 1 and {[Cd2(trz)2(gt)(H2O)2](H2O)4}n 2 (Htrz = 1,2,4-triazole; H2gt = glutaric acid), were synthesized and their structures were fully characterized by elemental analyses, IR spectroscopy, and single-crystal X-ray crystallography. Their thermal stability and luminescence emissions were further investigated to establish their structure–property relationship. Crystal structure determination showed that 1 is a neutral two-dimensional pillared-bilayer network consisting of 14-membered hydrophobic channels, whereas 2 is an infinite three-dimensional framework constructed from tetranuclear [Cd4(trz)4]4+ subunits. Interestingly, the overall structure of both MOFs can be solely supported by ZnII/CdII and trz anions, and were further consolidated by the introduction of a flexible gt co-ligand. In addition, the carboxylate groups in the co-ligand can also serve as a weak O–H···O hydrogen-bond acceptor to capture guest water molecules. The synchronous weight-loss behaviour of trz and gt anions presented by thermogravometric curves suggest their cooperative contributions to the thermal stability of the MOFs. In contrast, the fluorescence emissions of two complexes are significantly dominated by the core trz ligand, rather than the gt co-ligand and metal ions.

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