Article
Chemistry, Multidisciplinary
Aaron Sheng, Abdullah Islam, Saurabh Khuje, Jian Yu, Harvey Tsang, Andres Bujanda, Shenqiang Ren
Summary: This article introduces printable and air-stable molecular metal ink materials made from copper ions. By complexing copper formate with amines, the decomposition temperature of the printed copper ink can be achieved at 100 degrees C while maintaining its electric conductivity. The printed copper conductors exhibit high electric conductivity and electromagnetic interference shielding effectiveness, showing great potential for printable electronics applications.
CHEMICAL COMMUNICATIONS
(2022)
Article
Engineering, Chemical
Saizhen Jin, Pengyu Zhang, Leming Ou, Yibing Zhang, Jianhua Chen
Summary: The study revealed that increasing carbon chain length can enhance the flotation effect of alkyl hydroxamates on cassiterite, with longer carbon chain alkyl hydroxamates having stronger adsorption capacity on cassiterite surfaces. Additionally, theoretical calculations and experimental verification indicated that alkyl hydroxamates with longer carbon chains have lower electronic stabilities and larger dipole moments.
MINERALS ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Jingyuan Zhang, Xiaodong Li, Mu Zhang, Qi Zhu, Xudong Sun
Summary: To address the issue of low adhesion in the conformal metal coating using metal-organic complexing deposition ink for electromagnetic interference shielding, a mussel-inspired polydopamine (PDA) coating with double-sided adhesive characteristics was used to modify the substrate surface. By controlling the post-treatment method of the PDA coating, the adhesion of the silver film was effectively enhanced, and superior electromagnetic shielding effectiveness was achieved with a thin silver film.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Wendong Yang, Zhichao Dong, Zihao Guo, Haoqiang Sun
Summary: Inkjet printing is an efficient solution-based patterning technology for the fabrication of antennas in flexible and wearable wireless communication systems. Copper particle-free printable ink is a promising candidate material for the conductive layer of the antennas. This study successfully formulated an improved copper ink using mixed amines and demonstrated its feasibility for usage in wireless electronic devices by fabricating a pre-designed flexible ultra-broadband antenna via inkjet printing.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Wendong Yang, Zhichao Dong, Zihao Guo, Haoqiang Sun
Summary: Inkjet printing technology has great potential in the fabrication of antennas for flexible and wearable wireless communication systems. Copper particle-free printable ink is considered a promising material for the conductive layer of the antennas. However, there are currently only a few suitable copper particle-free inks for inkjet printing, and the use of straight-chain diamines in their synthesis process is rarely considered. This research successfully formulated a copper ink with improved performance using specific compounds, and it was used to fabricate a flexible ultra-broadband antenna via inkjet printing, demonstrating its feasibility for usage in wireless electronic devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Hao-Lin Zhu, Jia-Run Huang, Xue-Wen Zhang, Chao Wang, Ning-Yu Huang, Pei-Qin Liao, Xiao-Ming Chen
Summary: In this study, a Cu-based metal-organic framework was introduced as a catalyst for the efficient and selective reduction of CO2 to CH4. The in situ-generated trigonal pyramidal Cu(I)N-3 was identified as the electrochemical active site, while the hydrogen-bonding interactions of adjacent aromatic hydrogen atoms played a key role in stabilizing key intermediates of carbon dioxide reduction and inhibiting the hydrogen evolution reaction, demonstrating a high performance in electroreduction of CO2 to CH4.
Article
Physics, Applied
Samuel Fink, Linus Dahmen, Michael K. K. Steinhoff, Jochen Stollenwerk, Christian Vedder
Summary: The growing market of printed electronics requires the development of new materials and processing technologies. This study presents a method for direct formation of thin copper-nickel alloy films from MOD ink, and a laser-based functionalization process under ambient conditions.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Biochemistry & Molecular Biology
Saizhen Jin, Qing Shi, Leming Ou
Summary: This study investigated the hydrophobic flocculation of cassiterite using four alkyl hydroxamic acids with varying carbon chain lengths. Microflotation tests were conducted to analyze the flotation behavior, while FBRM and PVM were employed to monitor the evolution of particle size distribution and floc images during flocculation. The calculated interaction energies indicated that longer carbon chain hydroxamic acids facilitated the formation of larger cassiterite flocs at lower concentrations. The findings suggest that the hydrophobic aggregation of cassiterite can be controlled by adjusting the carbon chain length of the alkyl hydroxamic acid collectors.
Article
Chemistry, Applied
Fei Ren, Jinwei Wang, Jinglin Yu, Cheng Zhong, Fengwei Xie, Shujun Wang
Summary: This study demonstrates the synthesis of acetylated maize starches (AMS) with different degrees of substitution (DS) in the presence of ionic liquids (ILs) without catalyst. The DS and reaction efficiency of AMS increase with decreasing alkyl chain length of cations or anions. AMS synthesized in imidazolium-based ILs exhibit higher hydrophobicity and thermal stability. The viscosity of ILs and the interactions between acetic anhydride molecules are crucial for the acetylation of starch.
CARBOHYDRATE POLYMERS
(2022)
Article
Chemistry, Multidisciplinary
Ziyin Li, Yingxiang Ye, Chao Shi, Zizhu Yao, Zhangjing Zhang, Shengchang Xiang
Summary: This research developed three isoreticular Cu(II)-pyrazolate-carboxylate frameworks with different ligand sizes. Among them, FJU-27 showed high selectivity and adsorption capacity for CO2. Configurational bias Monte Carlo molecular simulations and dynamic breakthrough experiments confirmed its potential.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Jun Wang, Congying Rao, Lu Lu, Shile Zhang, Mohd Muddassir, Jianqiang Liu
Summary: Two highly stable metal-organic frameworks were designed and synthesized, showing outstanding photocatalytic behaviors for the disintegration of methyl violet under UV irradiation, using different assembly materials.
Article
Chemistry, Multidisciplinary
Shu-Ling Sie, Surabhi Kamal, Zong-Zhan Lu, Ling-Fang Wei, Tzuoo-Tsair Luo, Yen-Hsiang Liu, Chao-Wan Chang, Kai-Ming Chi, Kuang-Lieh Lu
Summary: The chemistry of mixed-valence coordination polymers and metal-organic frameworks is of great interest due to their limited numbers and intriguing properties. However, the scarcity of these compounds can be attributed to the lack of effective synthesis methods. In this study, a novel Cu-I/Cu-II mixed-valence coordination polymer was successfully synthesized and characterized. This research provides an important example for the design, synthesis, and crystal engineering of mixed-valence compounds.
Article
Chemistry, Physical
Jin Seul Byun, Yo Chan Jeong, Jae Ho Kim, Min Chang Shin, Jeong Yeon Park, Hyoung-Joon Jin, Chong Rae Park, Taehoon Kim, Seung Jae Yang
Summary: The desire for multi-functional carbon materials has led to extensive study on exploiting mesostructured porous carbon derived by pseudo metal-organic coordination. The use of zinc ions as both a mesostructure inducer and self-vanishing porogen enables the direct carbonization of non-carbonizable precursors, resulting in porous carbon materials with diverse pore architectures. These materials show great potential for various applications, demonstrated by their ability to adsorb large molecules and enhance the electrochemical performance of sulfur cathodes for Li-S batteries.
Review
Chemistry, Physical
Swetha Chandrasekaran, Dun Lin, Yat Li, Marcus A. Worsley
Summary: The global push toward decarbonization and electrification has led to a growing research effort to achieve higher device performance goals. Thick electrodes are being explored as a way to increase the fraction of active materials in electrochemical energy storage devices (EESDs), but overcoming ion-transport limitations is a challenge. Promising strategies, such as additive manufacturing techniques and the development of 3D-printable inks and resins, are being identified to address these limitations and improve the performance of EESDs.
Article
Materials Science, Multidisciplinary
Alexis Tran, Marion Leroux, Clement Michelin, Francois Reveret, Damien Boyer, Federico Cisnetti
Summary: Boron-dipyrromethenes (BODIPYs) are widely used organic fluorophores that suffer from aggregation-caused quenching in the solid state. This study successfully restores the luminescence of BODIPY in the solid state by integrating it into metal-organic frameworks (MOFs) through a simple room-temperature synthetic procedure. The MOF@BODIPY samples exhibit high external photoluminescence quantum yields and similar emission and excitation spectra to BODIPY in solution.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)