Probing Local Donor–Acceptor Charge Transfer in a Metal–Organic Framework Via a Scanning Tunneling Microscope

2020 ◽  
Vol 124 (39) ◽  
pp. 21635-21640
Author(s):  
Ting-Hsun Yang ◽  
Shao-Heng Yang ◽  
Yu-Chuan Chen ◽  
Darwin Kurniawan ◽  
Wei-Hung Chiang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Scanning Tunneling Microscope ◽  
Metal Organic Framework ◽  
Scanning Tunneling ◽  
Tunneling Microscope ◽  
Donor Acceptor ◽  
Metal Organic ◽  
Organic Framework

scholarly journals Probing charge transfer characteristics in a donor–acceptor metal–organic framework by Raman spectroelectrochemistry and pressure-dependence studies

2018 ◽  
Vol 20 (40) ◽  
pp. 25772-25779 ◽  
Author(s):  
Pavel M. Usov ◽  
Chanel F. Leong ◽  
Bun Chan ◽  
Mikihiro Hayashi ◽  
Hiroshi Kitagawa ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Pressure Dependence ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Transfer Characteristics ◽  
Donor Acceptor ◽  
Metal Organic ◽  
Transfer Properties ◽  
Organic Framework

Donor–Acceptor Metal–Organic Frameworks display redox and pressure dependent charge transfer properties.

scholarly journals Nanopore-induced host–guest charge transfer phenomena in a metal–organic framework

2018 ◽  
Vol 9 (13) ◽  
pp. 3282-3289 ◽  
Author(s):  
S. Yamamoto ◽  
J. Pirillo ◽  
Y. Hijikata ◽  
Z. Zhang ◽  
K. Awaga
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Metal Organic Framework ◽  
Donor And Acceptor ◽  
Organic Electron ◽  
Donor Acceptor ◽  
Metal Organic ◽  
Bulk Scale ◽  
A Charge ◽  
Organic Framework

Using the “crystal sponge” approach, weak organic electron donor molecules were impregnated and evenly distributed in a crystal of a metal–organic framework (MOF), with the self-assembly of the donor–acceptor pairs with electron acceptor ligands. The nanopores of the MOF confined them and induced a charge transfer phenomenon, which would not occur between donor and acceptor molecules in a bulk scale.

scholarly journals Controlling charge separation in a novel donor–acceptor metal–organic framework via redox modulation

2014 ◽  
Vol 5 (12) ◽  
pp. 4724-4728 ◽  
Author(s):  
C. F. Leong ◽  
B. Chan ◽  
T. B. Faust ◽  
D. M. D'Alessandro
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Charge Separation ◽  
Metal Organic Framework ◽  
Redox Modulation ◽  
Naphthalene Diimide ◽  
Computational Calculations ◽  
Donor Acceptor ◽  
Metal Organic ◽  
Organic Framework

Donor–acceptor charge transfer interactions in a tetrathiafulvalene–naphthalene diimide-based metal–organic framework (MOF) are interrogated using a complementary suite of solid state spectroscopic, electrochemical and spectroelectrochemical methods along with computational calculations.

Energy and charge transfer by donor–acceptor pairs confined in a metal–organic framework: a spectroscopic and computational investigation

2014 ◽  
Vol 2 (10) ◽  
pp. 3389-3398 ◽  
Author(s):  
Kirsty Leong ◽  
Michael E. Foster ◽  
Bryan M. Wong ◽  
Erik D. Spoerke ◽  
Dara Van Gough ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Energy Harvesting ◽  
Metal Organic Framework ◽  
Phase Segregation ◽  
Computational Investigation ◽  
Donor And Acceptor ◽  
Donor Acceptor ◽  
Metal Organic ◽  
Organic Framework ◽  
Acceptor Molecules

A metal–organic framework serves as a multifunctional host for donor and acceptor molecules, enabling energy harvesting and transfer without phase segregation.

Magneto-ionic phase control in a quasi-layered donor/acceptor metal–organic framework by means of a Li-ion battery system

2017 ◽  
Vol 56 (6) ◽  
pp. 060307 ◽  
Author(s):  
Kouji Taniguchi ◽  
Keisuke Narushima ◽  
Kayo Yamagishi ◽  
Nanami Shito ◽  
Wataru Kosaka ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Phase Control ◽  
Li Ion Battery ◽  
Battery System ◽  
Donor Acceptor ◽  
Metal Organic ◽  
Li Ion ◽  
Organic Framework

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 Enhanced Water Stability and Photoresponsivity in Metal-Organic Framework (MOF): A Potential Tool to Combat Drug-resistant Bacteria

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Saleh A. Ahmed ◽  
Damayanti Bagchi ◽  
Hanadi A. Katouah ◽  
Md. Nur Hasan ◽  
Hatem M. Altass ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Charge Transfer ◽  
Metal Organic Framework ◽  
Resistant Bacteria ◽  
Ros Generation ◽  
Water Stability ◽  
Equal Proportion ◽  
Electronic Band ◽  
Metal Organic ◽  
Organic Framework

AbstractIn this work, we have successfully synthesized a bimetallic (Zinc and Cobalt) Zeolitic Imidazolate Framework (Zn50Co50-ZIF), a class in a wider microporous Metal-Organic Framework (MOF) family. The synthesized nanostructures maintain both water stability like ZIF-8 (solely Zn containing) and charge transfer electronic band in the visible optical spectrum as ZIF-67 (solely Co containing). Crystal structure from XRD, high resolution transmission electron microscopy (HRTEM) followed by elemental mapping (EDAX) confirm structural stability and omnipresence of the metal atoms (Zn and Co) across the nanomaterial with equal proportion. Existence of charge transfer state consistent with ZIF67 and intact ultrafast excited state dynamics of the imidazolate moiety in both ZIF-8 and ZIF-67, is evidenced from steady state and time resolved optical spectroscopy. The thermal and aqueous stabilities of Zn50Co50-ZIF are found to be better than ZIF-67 but comparable to ZIF-8 as evidenced by solubility, scanning electron microscopy (SEM) and XRD studies of the material in water. We have evaluated the photoinduced ROS generation by the mixed ZIF employing dichloro-dihydro-fluorescein diacetate (DCFH-DA) assay. We have also explored the potentiality of the synthesized material for the alternate remediation of methicillin resistant Staphylococcus aureus (MRSA) infection through the photoinduced reactive oxygen species (ROS) generation and methylene blue (MB) degradation kinetics.

Photoresponsivity and antibiotic sensing properties of an entangled tris(pyridinium)-based metal–organic framework

2020 ◽  
Vol 49 (22) ◽  
pp. 7488-7495 ◽  
Author(s):  
Peng Li ◽  
Meng-Yue Guo ◽  
Lu-Lu Gao ◽  
Xue-Mei Yin ◽  
Shuai-Liang Yang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Metal Organic Framework ◽  
Sensing Properties ◽  
Luminescent Sensor ◽  
Donor Acceptor ◽  
Metal Organic ◽  
Nitrofuran Antibiotics ◽  
Organic Framework

Novel 2D → 2D entanglement affords close donor–acceptor contacts for electron transfer based photochromism and photomodulable fluorescence of a MOF, which also serves as a regenerable and sensitive luminescent sensor for nitrofuran antibiotics.

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