Review
Chemistry, Multidisciplinary
Jinqiao Dong, Vanessa Wee, Shing Bo Peh, Dan Zhao
Summary: Advanced porous materials, incorporating molecular rotors, possess dynamic functionalities that respond to chemical and physical stimuli, offering unique potential applications in various fields.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Haohao Liu, Shuodong Wang, Mengfan Huang, Qilong Bian, Yang Zhang, Kun Yang, Bo Li, Wenhuan Yao, Yizhao Zhou, Sheng Xie, Ben Zhong Tang, Zebing Zeng
Summary: A novel copper-based dynamic metal-organic framework with modulable photoelectromagnetic properties is reported in this study.
Article
Chemistry, Physical
Zhiyu Liu, Yangyang Wang, Miguel A. Garcia-Garibay
Summary: The synthesized zirconium metal-organic framework containing a dipolar rotor demonstrated dynamic heterogeneity in rotational motion, which is affected by temperature and hydrogen bond activation energy.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Simon Krause, Jovana V. Milic
Summary: Dynamic crystalline materials combine crystalline lattice with components that display dynamic behavior in the solid state. Recent developments in this field are discussed, including the incorporation of stimuli-responsive molecular switches and machines. The opportunities and challenges associated with these materials for innovative functionality and applications are outlined.
COMMUNICATIONS CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Wen-Juan Wei, Hong-Qiang Gao, Ming Fang, Yun-Zhi Tang, Yen Wei
Summary: In this study, two new supramolecular compounds were constructed and their phase transitions were characterized using various techniques such as DSC, X-ray analysis, and Raman spectroscopy.
Article
Chemistry, Physical
Ke Zhu, Yang Cao, Ruiqing Fan, Jian Zhang, Wenwen Jia, Xin Jiang, Chengshan Ji, Jingkun Wu, Yuanyuan Yin, Yulin Yang
Summary: This study constructed three stable silver-based organic frameworks and discovered that one of the frameworks can achieve molecular rotation driven by water vapor. By integrating this crystal material with polymer films, visible shape transformation can be achieved. The double-layer structure actuator prepared by acid etching technique exhibited responsive behaviors to water vapor.
Article
Chemistry, Multidisciplinary
Yizhi Jiang, Zheng Wan, Xiao He, Jinrong Yang
Summary: A functional porous coating on a zinc electrode acts as an ionic sieve to improve aqueous zinc ion batteries. Molecular simulations reveal the process of continuous dehydration of solvated Zn2+ ions from the electrolyte into MOF channels. Modifying linkers on the MOF surface can weaken the solvation shell of Zn2+ ions, reducing dehydration energy and potentially enhancing electrical conductivity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Haijun Peng, Senhe Huang, Diana Tranca, Fanny Richard, Walid Baaziz, Xiaodong Zhuang, Paolo Samori, Artur Ciesielski
Summary: MOF@COF hybrids, combining characteristics of MOF and COF, demonstrate enhanced energy storage performance in supercapacitors with the infiltration of redox-active molecules. Density functional theory guides the design of high-performance hybrids, showing excellent supercapacitor performance and retention rates.
Article
Chemistry, Multidisciplinary
Shuhao An, Qing Xu, Zhihui Ni, Jun Hu, Changjun Peng, Lipeng Zhai, Yu Guo, Honglai Liu
Summary: This study synthesized two new COFs with crown ethers as backbone instead of side chains, showing high surface areas, good crystallinity, and excellent chemical stability. These COFs exhibited remarkable binding ability of K+ or Cs+ due to the size-fit effect, indicating the potential of fabricating COFs with crown ethers.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Qichao Zhao, Yu Ge, Xianfen Wang
Summary: Co2P embedded in the amorphous metal-organic framework (MOF) derived carbon nanocubes was investigated as a fast anode for sodium ion batteries (SIBs). The Co2P@NC-12.5 electrodes showed a high reversible capacity exceeding 350 mAh g-1 at a current density of 0.1 A g-1. The electrodes also demonstrated superior capacity and structural stability at increased current densities, with a capacity of 120 mAh g-1 at 1 A g-1 after 500 cycles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Zuozhong Liang, Hongbo Guo, Guojun Zhou, Kai Guo, Bin Wang, Haitao Lei, Wei Zhang, Haoquan Zheng, Ulf-Peter Apfel, Rui Cao
Summary: Synthesizing metal-organic framework (MOF)-supported Co porphyrins for the oxygen reduction reaction (ORR) leads to improved activity and selectivity. The grafted Co porphyrins show boosted ORR activity and improved selectivity for the 4e ORR, demonstrating potential for application as air electrode catalysts in Zn-air batteries.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Applied
Shi Tu, Danxia Lin, Jiajin Huang, Liang Yu, Zewei Liu, Zhong Li, Qibin Xia
Summary: In this study, two isoreticular pillar-layer metal-organic frameworks, Co(aip)(bpy)0.5 and Co(aip)(pyz)0.5, were developed for the separation of C2H4/C2H6. The pore apertures of these frameworks are controlled by changing the length of the pillar ligands. Co(aip)(pyz)0.5, with a shorter pillar ligand, shows reduced pore size and molecular sieving separation of C2H4 from C2H6. Molecular simulation and dynamic breakthrough experiments confirm its high selectivity for C2H4.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiansong Shi, Zhipeng Zhang, Congcong Yin, Xin Zhang, Jianghai Long, Zhe Zhang, Yong Wang
Summary: This article introduces the application of three-dimensional covalent organic framework membranes in organic solvent nanofiltration by designing the membranes through moderated interfacial crystallization. The nanoporous supports act as moderators, allowing the crystallization of the membranes to form sub-nanometer channels with high stability and selectivity. Additionally, the membrane demonstrates excellent practicality in purifying active pharmaceutical ingredients.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Mousumi Garai, Manmatha Mahato, Sanghee Nam, Eunji Kim, Darae Seo, Yonghee Lee, Van Hiep Nguyen, Saewoong Oh, Pradeep Sambyal, Hyunjoon Yoo, Ashhad Kamal Taseer, Sheraz Ali Syed, Hee Han, Chi Won Ahn, Jaehwan Kim, Il-Kwon Oh
Summary: A novel MXene-based electro-ionic artificial muscle is reported, which utilizes a titanium carbide hybrid nanoarchitecture to anchor a manganese-based metal-organic framework. The developed artificial muscle exhibits high bending displacement, ultrafast response time, wide frequency response, and exceptional stability. It is successfully demonstrated to mimic eye motions in a doll.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Kristen A. Colwell, Megan N. Jackson, Rodolfo M. Torres-Gavosto, Sudi Jawahery, Bess Vlaisavljevich, Joseph M. Falkowski, Berend Smit, Simon C. Weston, Jeffrey R. Long
Summary: This study demonstrates the effectiveness of using noncoordinating buffers to independently control reaction pH during metal-organic framework synthesis, showing the role of coordinators in governing crystal morphology. Experimental and theoretical calculations reveal that crystal growth along a specific direction can be controlled by varying the coordination strength, ultimately impacting gas diffusion pathways.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Jacopo Perego, Silvia Bracco, Angiolina Comotti, Daniele Piga, Irene Bassanetti, Piero Sozzani
Summary: An anionic mechanism was utilized to create linear polymers and copolymers anchored to high-surface-area porous nanoparticles, demonstrating covalent connection between the polymers and the 3D network. The growth of anchored chains outside the pores was achieved through anionic propagation, promoting sequential reactions and the formation of nanoparticles covered by a second polymer via anionic block copolymerization. Magnetization transfer across interfaces in 2D H-1-C-13-HETCOR NMR spectra confirmed the intimate relationship between the matrix and the grown-in polymers.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Optics
J. Perego, I. Villa, A. Pedrini, E. C. Padovani, R. Crapanzano, A. Vedda, C. Dujardin, Charl X. Bezuidenhout, S. Bracco, P. E. Sozzani, A. Comotti, L. Gironi, M. Beretta, M. Salomoni, N. Kratochwil, S. Gundacker, E. Auffray, F. Meinardi, A. Monguzzi
Summary: This study demonstrates that composite materials based on fluorescent metal-organic framework (MOF) nanocrystals can function as fast scintillators, crucial for medical imaging technologies. By embedding MOF nanocrystals in a polymer, a prototype scintillator with ultrafast scintillation rise time of around 50 ps was successfully developed, supporting the development of new scintillators based on engineered fluorescent MOF nanocrystals.
Article
Chemistry, Multidisciplinary
Jacopo Perego, Charl X. Bezuidenhout, Silvia Bracco, Giacomo Prando, Luciano Marchio, Mattia Negroni, Pietro Carretta, Piero Sozzani, Angiolina Comotti
Summary: The study focused on achieving multiple rotors with hyperfast mobility in MOF architecture, exploring various configurations of interrelated relationships and thermal energy-driven switching mechanisms, ultimately engineering hypermobile rotors in machine-like double ligand MOF crystals.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Antonio De Nicola, Andrea Correa, Silvia Bracco, Jacopo Perego, Piero Sozzani, Angiolina Comotti, Giuseppe Milano
Summary: The study investigated the reorientation statistics of rotor collections in crystal-like organosilicas using molecular dynamics simulations, revealing a complex rotatory phenomenon. Adopting a multiple-site model allows for a more accurate simulation of H-2-NMR spectra and understanding of their temperature dependence.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Giulia Bonfant, Davide Balestri, Jacopo Perego, Angiolina Comotti, Silvia Bracco, Matthieu Koepf, Marcello Gennari, Luciano Marchio
Summary: Suitably functionalized porous matrices have been developed as versatile platforms for catalytic applications. In this study, porous organic polymers (POPs) with phosphine oxide groups were synthesized and used as electrocatalysts. The loaded polymers showed high efficiency for hydrogen evolution reaction, indicating their potential in electrochemical activation of small molecules.
Article
Multidisciplinary Sciences
J. Perego, Charl X. Bezuidenhout, I. Villa, F. Cova, R. Crapanzano, I. Frank, F. Pagano, N. Kratochwill, E. Auffray, S. Bracco, A. Vedda, C. Dujardin, P. E. Sozzani, F. Meinardi, A. Comotti, A. Monguzzi
Summary: In this study, high efficiency luminescence with significant Stokes shift is achieved by utilizing fluorescent conjugated acene building blocks arranged in nanocrystals. These hybrid nanocrystals show promising potential in various applications.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Multidisciplinary
Pietro Bonfa, Jonathan Frassineti, John M. Wilkinson, Giacomo Prando, Muhammad Maikudi Isah, Chennan Wang, Tiziana Spina, Boby Joseph, Vesna F. Mitrovic, Roberto De Renzi, Stephen J. Blundell, Samuele Sanna
Summary: This study reports the quantum coherence between the spins of muons and quadrupolar nuclei for the first time. The entangled states are found to be highly sensitive to the local charge environment, making them functional quantum sensors. The extreme sensitivity of these entangled states to the local structural and electronic environments is revealed through the quadrupolar interaction with the electric field gradient at the nuclear sites. This case study demonstrates the potential of positive muons as a quantum sensing tool for probing structural and charge-related phenomena in materials.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Jacopo Perego, Charl X. Bezuidenhout, Silvia Bracco, Sergio Piva, Giacomo Prando, Cristian Aloisi, Pietro Carretta, Jiri Kaleta, Thi Phuong Le, Piero Sozzani, Andrea Daolio, Angiolina Comotti
Summary: Fluorinated metal-organic frameworks exhibit benchmark mobility of correlated dipolar rotors at low temperatures, with practically zero activation energy. Through various experiments and calculations, the dynamic characteristics and cascade mechanism of dipole configurations have been revealed. It has also been shown that the dipole configurations in the crystal can be changed by chemical stimuli such as CO2.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Jinyu Sheng, Jacopo Perego, Silvia Bracco, Wlodzimierz Czepa, Wojciech Danowski, Simon Krause, Piero Sozzani, Artur Ciesielski, Angiolina Comotti, Ben L. Feringa
Summary: This research presents a general strategy for constructing highly porous aromatic frameworks with external-stimuli responsiveness. By chemical and physical stimulation, dynamic materials with reversible transformation capabilities have been successfully created, showing potential applications in pH control, gas uptake and release, contaminant removal, and water harvesting.
ADVANCED MATERIALS
(2023)
Article
Physics, Multidisciplinary
Erik Piatti, Giacomo Prando, Martina Meinero, Cesare Tresca, Marina Putti, Stefano Roddaro, Gianrico Lamura, Toni Shiroka, Pietro Carretta, Gianni Profeta, Dario Daghero, Renato S. Gonnelli
Summary: In this study, the authors demonstrate a unique superconducting phase induced by ionic liquid gating-driven hydrogen intercalation in the layered compound TiSe2. The findings suggest that hydrogen doping could produce similar effects on the electronic and phononic spectra of materials at ambient pressure as it does in near-to-room temperature superconductivity of hydrides at megabar pressures. The non-volatile control of the electronic ground state of TiSe2 via gate-controlled protonation provides a promising approach for engineering the ground state of transition metal dichalcogenides and other layered materials.
COMMUNICATIONS PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Giacomo Prando, Daniele Torsello, Samuele Sanna, Michael J. Graf, Sunseng Pyon, Tsuyoshi Tamegai, Pietro Carretta, Gianluca Ghigo
Summary: This study investigates EuFe2(As0.7P0.3)(2) using muon-spin spectroscopy and ac magnetic susceptibility measurements, revealing its characteristics of ferromagnetism and superconductivity. By employing frequency-resolved experimental techniques, complex dynamic phenomena are observed and a model is proposed based on the influence of magnetic Meissner domains on vortices and antivortices.
Article
Materials Science, Multidisciplinary
Riaz Hussain, Giacomo Prando, Sebastian Selter, Saicharan Aswartham, Bernd Buechner, Pietro Carretta
Summary: In this study of the Mott insulator La2O3Fe2Se2 using La-139 nuclear quadrupole resonance (NQR), different La sites were found in the paramagnetic and antiferromagnetic phases, indicating distinct lattice configurations. The dependence of quadrupole coupling for La2 on temperature suggests a structural distortion driven by the magnetic order parameter. Fluctuations with characteristic frequencies well below the Heisenberg exchange frequency were observed in the paramagnetic phase, likely associated with nematic fluctuations.