The effect of furcated hydrogen bond and coordination bond on luminescent behavior of metal-organic framework [CuCN·EIN]: A TDDFT study

2012 ◽  
Vol 97 ◽  
pp. 589-593 ◽  
Author(s):  
Danyang Wu ◽  
Weihong Mi ◽  
Min Ji ◽  
Ce Hao ◽  
Jieshan Qiu
Keyword(s):  
Hydrogen Bond ◽  
Metal Organic Framework ◽  
Coordination Bond ◽  
Metal Organic ◽  
Luminescent Behavior ◽  
Organic Framework

scholarly journals Crystalline Hydrogen Bond of Water Molecules Confined in a Metal-Organic Framework

2021 ◽  
Author(s):  
Jinhee Bae ◽  
Sun Ho Park ◽  
Dohyun Moon ◽  
Nak Cheon Jeong
Keyword(s):  
Hydrogen Bond ◽  
Metal Organic Framework ◽  
Bulk Water ◽  
Coordination Bond ◽  
Ex Situ ◽  
Water Molecules ◽  
Confined Water ◽  
Metal Organic ◽  
Cu Bonding ◽  
Organic Framework

Abstract Hydrogen bond (H-bond) of water molecules confined in nanopores is of particular interest because it is expected to exhibit chemical features different from bulk water molecules due to its interaction with the wall lining the pores. Herein, we show a crystalline behavior of hydrogen-bonded water molecules residing in the nanocages of a paddlewheel metal-organic framework, providing in situ and ex situ synchrotron single-crystal X-ray diffraction and Raman spectroscopy studies. The crystalline H-bond is demonstrated by proving the vibrational chain connectivity arising between hydrogen bonding and paddlewheel Cu−Cu bonding in sequentially connected Cu–Cu⋅⋅⋅⋅⋅coordinating H2O⋅⋅⋅⋅⋅H-bonded H2O and proving the spatial ordering of H-bonded water molecules at room temperature, where they are anticipated to be disordered with a high degree of freedom in their molecular motions. Additionally, we show a substantial distortion of the paddlewheel Cu2+ centers that arises simultaneously with water coordination. Also, we suggest the dynamic coordination bond character of the H-bond of the confined water molecules, by which an H-bond transitions to a coordination bond at the Cu2+ center instantaneously after dissociating a previously coordinated water molecule.

A donor–acceptor liganded metal–organic framework showcases the hydrogen-bond-enhanced sensing of N-heterocyclic explosives

2021 ◽  
Vol 9 (36) ◽  
pp. 12086-12093
Author(s):  
Junjie Wang ◽  
Yao Cheng ◽  
Jie Zhou ◽  
Weihua Tang
Keyword(s):  
Hydrogen Bond ◽  
Detection Limit ◽  
Fluorescence Quenching ◽  
Metal Organic Framework ◽  
Donor Acceptor ◽  
Metal Organic ◽  
Organic Framework

Zn(ii)-based MOF for detecting FOX-7 like explosives is designed via hydrogen-bond-intensified host–guest interactions. The crystalline MOF achieves 0.14 ppm detection limit and a highest fluorescence quenching constant of 3.22 × 104 M−1.

scholarly journals Negative cooperativity upon hydrogen bond-stabilized O2 adsorption in a redox-active metal–organic framework

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Julia Oktawiec ◽  
Henry Z. H. Jiang ◽  
Jenny G. Vitillo ◽  
Douglas A. Reed ◽  
Lucy E. Darago ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Metal Organic Framework ◽  
Negative Cooperativity ◽  
O2 Adsorption ◽  
Redox Active ◽  
Active Metal ◽  
Metal Organic ◽  
Redox Active Metal ◽  
Organic Framework

Influence of Hydrogen Bond Donating Sites in UiO‐66 Metal‐Organic Framework for Highly Regioselective Methanolysis of Epoxides

ChemCatChem ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1789-1798 ◽  
Author(s):  
Aniruddha Das ◽  
Nagaraj Anbu ◽  
Mostakim Sk ◽  
Amarajothi Dhakshinamoorthy ◽  
Shyam Biswas
Keyword(s):  
Hydrogen Bond ◽  
Metal Organic Framework ◽  
Metal Organic ◽  
Organic Framework

scholarly journals Simultaneous implementation of resistive switching and rectifying effects in a metal-organic framework with switched hydrogen bond pathway

2019 ◽  
Vol 5 (8) ◽  
pp. eaaw4515 ◽  
Author(s):  
Zizhu Yao ◽  
Liang Pan ◽  
Lizhen Liu ◽  
Jindan Zhang ◽  
Quanjie Lin ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Resistive Switching ◽  
Metal Organic Framework ◽  
Random Access ◽  
Resistive Random Access Memory ◽  
Information Storage ◽  
X Ray Diffraction ◽  
Metal Organic ◽  
Simultaneous Implementation ◽  
Organic Framework

Resistive random-access memory (RRAM) has evolved as one of the most promising candidates for the next-generation memory, but bistability for information storage, simultaneous implementation of resistive switching and rectification effects, and a better understanding of switching mechanism are still challenging in this field. Herein, we report a RRAM device based on a chiral metal-organic framework (MOF) FJU-23-H2O with switched hydrogen bond pathway within its channels, exhibiting an ultralow set voltage (~0.2 V), a high ON/OFF ratio (~105), and a high rectification ratio (~105). It is not only the first MOF with voltage-gated proton conduction but also the first single material showing both rectifying and resistive switching effects. By single-crystal x-ray diffraction analyses, the mechanism of the resistive switching has been demonstrated.

scholarly journals Discovery of Superbroad Mid-Infrared Luminescent Metal-Organic Framework Glass

2019 ◽  
Author(s):  
Mohamed. A. Ali ◽  
Jinjun Ren ◽  
Xiaofeng Liu ◽  
Youjie Hua ◽  
Yuanzheng Yue ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Zeolitic Imidazolate Frameworks ◽  
Melt Quenching ◽  
Mid Infrared ◽  
Amorphous Phases ◽  
Glass Forming ◽  
Metal Organic ◽  
Ir Emission ◽  
Luminescent Behavior ◽  
Organic Framework

<p>Metal-organic framework (MOF) glasses are a newly discovered family of melt-quenched glasses. However, so far it is not known whether these glasses exhibit photonic functionalities. Here, we show the discovery of the luminescent behavior of a MOF glass, i.e., the cobalt doped zeolitic imidazolate frameworks-62 (ZIF-62) glass (Zn<sub>1-<i>x</i></sub> Co<i><sub>x</sub></i> (Im)<sub>1.9</sub> (bIm)<sub>0.1</sub>, <i>x</i> = 0, 0.1 and 0.5), which was obtained by melt-quenching its corresponding ZIF-62 crystal. The synthesized crystal was precipitated in the form of spherical nano/micro-crystalline structure, which collapses structurally to form laminated glass with ultrahigh glass forming ability and the same short range molecular structure of the parent crystalline MOF. We observed the super-broadband mid-infrared (Mid-IR) luminescence (in the wavelength range of 1.5 µm – 4.8 µm) both in the crystalline and amorphous phases. The observed Mid-IR emission originates from d-d transition of Co<sup>2+</sup> ions that is protected by the strong Co-N coordination. The discovery of the luminescent glasses may pave the way towards new photonic applications of bulk MOF glasses, such as Mid-IR lasers. </p>

Lewis Acid Activation of a Hydrogen Bond Donor Metal–Organic Framework for Catalysis

ACS Catalysis ◽  
2016 ◽  
Vol 6 (5) ◽  
pp. 3248-3252 ◽  
Author(s):  
Edward A. Hall ◽  
Louis R. Redfern ◽  
Michael H. Wang ◽  
Karl A. Scheidt
Keyword(s):  
Hydrogen Bond ◽  
Lewis Acid ◽  
Metal Organic Framework ◽  
Acid Activation ◽  
Hydrogen Bond Donor ◽  
Metal Organic ◽  
Organic Framework
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