Article
Environmental Sciences
Yu-Jen Lee, Ying-Ju Chang, Jyh-Ping Hsu
Summary: UiO-66 metal-organic framework is stable and tolerant to extreme conditions, with the ability to be converted into amorphous derivatives for efficient adsorption capabilities. Doped nucleophiles enhance the adsorption towards Cu(II) and phosphate species through electrostatic interactions and hydrogen bonding.
Article
Chemistry, Physical
Muhammad Ashfaq, Georgii Bogdanov, Viktor Glebov, Akbar Ali, Muhammad Nawaz Tahir, Safia Abdullah
Summary: The text discusses the research and synthesis of pyrimethamine-based novel organic salt DECH, as well as the analysis of its structure and properties.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Multidisciplinary
Mary E. Zick, Suzi M. Pugh, Jung-Hoon Lee, Alexander C. Forse, Phillip J. Milner
Summary: Carbon capture and sequestration (CCS) is necessary to combat global climate change. The discovery of a new type of metal-organic framework (CD-MOFs) as a potential strategy for efficient CO2 adsorption is significant.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Nanoscience & Nanotechnology
Leo J. J. Small, Simon M. M. Vornholt, Stephen J. J. Percival, Melissa L. L. Meyerson, Mara E. E. Schindelholz, Karena W. W. Chapman, Tina M. M. Nenoff
Summary: Competitive gases have a significant impact on the electrical response of Ni-MOF-74 sensors, with the presence of NO2 causing a significant decrease in resistance. H2O and SO2 also lower the resistance, while CO2 has a smaller effect. These findings contribute to the improvement of gas detection properties in MOF materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Environmental Sciences
Michael P. Schmidt, Steven D. Siciliano, Derek Peak
Summary: This study investigated the interaction between boric acid and a polyphenolic SOM analogue, tannic acid, at varying concentrations under different pH conditions. The results showed that boric acid enhanced the deprotonation of tannic acid at pH = 7 and 9, leading to an increasing binding affinity between boric acid and tannic acid from pH = 5 to 9.
Article
Chemistry, Inorganic & Nuclear
Bodo Felsner, Volodymyr Bon, Christopher Bachetzky, Eike Brunner, Stefan Kaskel
Summary: Predictive design of guest-responsive frameworks on the molecular level remains a major challenge for chemists. The isoreticular approach is a promising method for designing MOFs with desired properties. In this study, the isoreticular approach was successfully applied to design new flexible frameworks, and their flexibility mechanisms were explored using various methods. The findings can serve as a roadmap for discovering new flexible frameworks with desired properties.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Bettina Baumgartner, P. Tim Prins, Jaap N. Louwen, Matteo Monai, Bert M. Weckhuysen
Summary: Capturing and converting CO2 through artificial photosynthesis using photoactive, porous materials is a promising approach for addressing increasing CO2 concentrations. Porphyrinic Zr-based metal-organic frameworks (MOFs) incorporating a photosensitizer in the porous structure show potential for CO2 sorption and activation. This study focuses on the initial step of artificial photosynthesis: CO2 adsorption and activation in the presence of water, revealing the influence of humidity and pore-size on CO2 sorption and light harvesting in porphyrinic MOFs.
Article
Chemistry, Multidisciplinary
Bettina Baumgartner, Risa Mashita, Arisa Fukatsu, Kenji Okada, Masahide Takahashi
Summary: Using polarisation-dependent infrared spectroscopy and gas sorption, we found that guest molecules gradually align with increasing pore filling in MOFs, while the framework undergoes rotation and linker detachment, leading to defects.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Electrical & Electronic
Yoonsoo Rho, Kyunghoon Lee, Letian Wang, Changhyun Ko, Yabin Chen, Penghong Ci, Jiayun Pei, Alex Zettl, Junqiao Wu, Costas P. Grigoropoulos
Summary: A reversible laser-assisted chlorination process can be used to create high doping concentrations in graphene monolayers without affecting the electrical mobility. This method offers a new approach for fabricating graphene-based photodetectors by creating rewritable photoactive junctions.
NATURE ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Wei Chen, Yanyong Wang, Binbin Wu, Jianqiao Shi, Yingying Li, Leitao Xu, Chao Xie, Wang Zhou, Yu-Cheng Huang, Tehua Wang, Shiqian Du, Minglei Song, Dongdong Wang, Chen Chen, Jianyun Zheng, Jilei Liu, Chung-Li Dong, Yuqin Zou, Jun Chen, Shuangyin Wang
Summary: This study reported a novel material Ni3Fe LDH-Pt NS, which activates Ni-OH bonds through the synergistic effect of its internal structure and multiple defects, exhibiting excellent performance in nucleophile oxidation reaction (NOR).
ADVANCED MATERIALS
(2022)
Article
Geochemistry & Geophysics
Angela R. Possinger, Michael J. Zachman, James J. Dynes, Tom Z. Regier, Lena F. Kourkoutis, Johannes Lehmann
Summary: The association of organic matter with mineral phases through co-precipitation is expected to be a common process in environments with high organic matter input and frequent mineral dissolution and re-precipitation. The study reveals that co-precipitation can lead to greater carbon accumulation and may cause spatial separation and transformation of both iron and carbon forms. Additionally, abiotic redox reactions between iron and carbon via substituted aromatic groups play a role in creating distinct co-precipitate composition, potentially impacting its mineralization.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Varun Natu, Rahul Pai, Olivia Wilson, Edward Gadasu, Hussein Badr, Avishek Karmakar, Andrew J. D. Magenau, Vibha Kalra, Michel W. Barsoum
Summary: This study reveals the properties and optimization methods of HF-etched MXene through the analysis of interlayer spacing, cation intercalation, and functionalization.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Varun Natu, Rahul Pai, Olivia Wilson, Edward Gadasu, Hussein Badr, Avishek Karmakar, Andrew J. D. Magenau, Vibha Kalra, Michel W. Barsoum
Summary: This study explores the functionalization of MXene surfaces via nucleophilic dehalogenation, explains why some molecules can intercalate into HF-etched MXene while others cannot, and demonstrates that base treatment can reduce -F terminations on the MXene surfaces, allowing for ion exchange and hydration. Additionally, it shows that low-concentration salt solutions can increase the interlayer spacing between MXene sheets.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Grace A. Lutovsky, Samuel N. Gockel, Mark W. Bundesmann, Scott W. Bagley, Tehshik P. Yoon
Summary: In this study, a direct decarboxylative cross-coupling of native carboxylic acids with nucleophilic coupling partners mediated by inexpensive and non-toxic Fe(III) salts was reported. This method involves an initial photochemical decarboxylation followed by radical-polar crossover, enabling the construction of diverse carbon-carbon, carbon-oxygen, and carbon-nitrogen bonds with remarkable generality.
Article
Environmental Sciences
Ling Ding, Yuanyuan Luo, Xiaoqin Yu, Zhuozhi Ouyang, Peng Liu, Xuetao Guo
Summary: The interaction mechanism between microplastics (MPs) and dissolved organic matter (DOM) is not well understood. This study demonstrated that MPs have a high adsorption affinity for different types of DOM, especially fulvic acid. Fluorescence analysis and FTIR spectroscopy revealed the interaction mechanism between MPs and DOM at the molecular level.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Il-Kwon Oh, Tania E. Sandoval, Tzu-Ling Liu, Nathaniel E. Richey, Chi Thang Nguyen, Bonwook Gu, Han-Bo-Ram Lee, Ralf Tonner-Zech, Stacey F. Bent
Summary: This study systematically investigates the growth characteristics of aluminum oxide films in atomic layer deposition (ALD) processes. The results show that the precursor structure plays a crucial role in both chemical reactivity and geometrical constraints during deposition.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Solomon T. Oyakhire, Huaxin Gong, Yi Cui, Zhenan Bao, Stacey F. Bent
ACS ENERGY LETTERS
(2022)
Article
Chemistry, Physical
Sindhu S. Nathan, Arun S. Asundi, Adam S. Hoffman, Jiyun Hong, Chengshuang Zhou, Fernando D. Vila, Matteo Cargnello, Simon R. Bare, Stacey F. Bent
Summary: Depositing Fe2O3 modified Rh/SiO(2) catalyst by atomic layer deposition (ALD) enhances both the turnover frequency and the selectivity towards higher oxygenates, while mitigating catalyst sintering.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Mun Sek Kim, Zewen Zhang, Jingyang Wang, Solomon T. Oyakhire, Sang Cheol Kim, Zhiao Yu, Yuelang Chen, David T. Boyle, Yusheng Ye, Zhuojun Huang, Wenbo Zhang, Rong Xu, Philaphon Sayavong, Stacey F. Bent, Jian Qin, Zhenan Bao, Yi Cui
Summary: In this study, the researchers found that Li3N can guide lithium deposition on its surface, decrease the coordination between lithium ions and solvents, induce an organic-poor solid-electrolyte interface (SEI) on the lithium metal anode, and facilitate lithium ion transport in the electrolyte, thereby improving the electrochemical performance of lithium metal batteries (LMBs).
Article
Chemistry, Multidisciplinary
Tzu-Ling Liu, Maggy Harake, Stacey F. Bent
Summary: This study demonstrates a successful two-step strategy to achieve selective dielectric on metal deposition, by applying a self-assembled monolayer protector on the metal surface to prevent unwanted inhibitor adsorption on the metal.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Chemistry, Physical
Solomon T. Oyakhire, Wenbo Zhang, Zhiao Yu, Sarah E. Holmes, Philaphon Sayavong, Sang Cheol Kim, David T. Boyle, Mun Sek Kim, Zewen Zhang, Yi Cui, Stacey F. Bent
Summary: This study investigates the effects of constant current and constant voltage SEI formation protocols on the performance of lithium metal batteries. The results show that constant current SEIs provide better protection for lithium metal compared to constant voltage SEIs.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Philaphon Sayavong, Wenbo Zhang, Solomon T. Oyakhire, David T. Boyle, Yuelang Chen, Sang Cheol Kim, Rafael A. Vila, Sarah E. Holmes, Mun Sek Kim, Stacey F. Bent, Zhenan Bao, Yi Cui
Summary: This study quantitatively and comparatively investigates the solubility of solid electrolyte interfaces (SEIs) derived from ether-based electrolytes optimized for Limetal anodes (LMAs) using in-operando electrochemical quartz crystal microbalance (EQCM). The results suggest that solubility of SEIs directly affects their formation and growth, and is closely related to the properties of the electrolyte. This provides crucial information to minimize capacity loss caused by SEI formation and growth during battery cycling and aging.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Sang Cheol Kim, Solomon T. Oyakhire, Constantine Athanitis, Jingyang Wang, Zewen Zhang, Wenbo Zhang, David T. Boyle, Mun Sek Kim, Zhiao Yu, Xin Gao, Tomi Sogade, Esther Wu, Jian Qin, Zhenan Bao, Stacey F. Bent, Yi Cui
Summary: Improving the Coulombic efficiency (CE) of lithium metal batteries is crucial, and liquid electrolyte engineering has shown promise. In this study, machine learning models were developed to design high-performance electrolytes. The models identified a reduction in solvent oxygen content as a critical factor for superior CE. By using fluorine-free solvents, electrolyte formulations achieved a high CE of 99.70%.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Chemistry, Physical
Hayrensa Ablat, Il-Kwon Oh, Nathaniel E. Richey, Solomon T. Oyakhire, Yufei Yang, Wenbo Zhang, William Huang, Yi Cui, Stacey F. Bent
Summary: The molecular layer deposition (MLD) method was successfully used to deposit hafnium-based organic-inorganic hybrid polymer films on silicon nanoparticles (SiNPs) for composite lithium-ion battery (LIB) anodes. The deposited films showed flexible and stable properties under electrochemical conditions. The MLD process involved sequential exposure of hafnium complex and ethanolamine reactants, resulting in self-limiting surface reactions and a constant growth per cycle (GPC) of approximately 2.0 angstrom/cycle at 120 degrees C. The characterization results confirmed the presence of metal oxynitride and organic bonds in the deposited films. The testing on LIB SiNP composite anodes showed a 35% increase in capacity retention after 110 cycles.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Il-Kwon Oh, Asir Intisar Khan, Shengjun Qin, Yujin Lee, H. -S. Philip Wong, Eric Pop, Stacey F. Bent
Summary: This study explores the application of area-selective atomic layer deposition (AS-ALD) technique in the fabrication of RRAM devices and finds that AS-ALD can improve the reliability and accuracy of RRAM, regardless of device size. The application of this technique will contribute to the improvement of other data storage technologies.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Josiah Yarbrough, Fabian Pieck, Alexander B. Shearer, Patrick Maue, Ralf Tonner-Zech, Stacey F. Bent
Summary: In this study, the combination of experiment and density functional theory was employed to investigate the selective growth of Al2O3 with methanesulfonic acid (MSA) as a small molecule inhibitor (SMI) for Cu substrates. The results showed that MSA exhibited facile uptake on Cu compared to limited chemisorption on Ru, SiO2, and TiO2. The reaction barriers between MSA and Cu were found to be lower than those between MSA and SiO2 or TiO2. XPS and AES analysis confirmed the selective chemisorption of MSA on Cu and the growth of Al2O3 on SiO2, TiO2, and Ru substrates using DMAI as the aluminum precursor.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Physical
Josiah Yarbrough, Stacey F. Bent
Summary: This study explores the use of 1-nitropropane as a small molecule inhibitor for selective atomic layer deposition. The results show that 1-nitropropane selectively chemisorbs on Cu and CuOx substrates, forming a high-quality inhibition layer. A new multistep process is developed for low-temperature Al2O3 ALD, allowing sequential reapplied and etched of the SMIs. The resulting area-selective ALD process enables high selectivity and could expand selective growth schemes to temperature-sensitive substrates.
JOURNAL OF PHYSICAL CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Solomon T. Oyakhire, Sheng-Lun Liao, Sanzeeda Baig Shuchi, Mun Sek Kim, Sang Cheol Kim, Zhiao Yu, Rafael A. Vila, Paul E. Rudnicki, Yi Cui, Stacey F. Bent
Summary: The composition of solid electrolyte interphase (SEI) is crucial for controlling Li-electrolyte reactions, but the reason for SEI composition differences between electrolytes is still unclear. Although many studies correlate SEI composition with Li ion solvation in the electrolyte, this correlation does not fully explain the interfacial phenomenon of SEI formation. In this study, we establish a direct connection between SEI composition and Li-ion solvation by creating SEIs using polar substrates that modify interfacial solvation structures. We demonstrate that an increase in the probability density of anions near a polar substrate enhances anion incorporation within the SEI, which directly correlates with interfacial solvation and SEI composition. Finally, we apply this concept to create stable anion-rich SEIs, leading to high-performance lithium metal batteries.
Proceedings Paper
Materials Science, Multidisciplinary
Ajay Ravi, Jingwei Shi, Jacqueline Lewis, Stacey F. Bent
Summary: With the advancement of lithographic techniques, the need for improved resist materials for extreme ultraviolet (EUV) has become pressing. This study focuses on the molecular layer deposition (MLD) of an Al-based hybrid resist known as alucone, which can resolve 50-nm line widths. Preliminary data suggest that alucone's line patterns are more defined than those of hafnicone, although its sensitivity is not yet as good.
ADVANCES IN PATTERNING MATERIALS AND PROCESSES XL
(2023)
Article
Chemistry, Physical
Solomon T. Oyakhire, Stacey F. Bent
Summary: Lithium metal batteries have great energy storage capabilities, but their commercial use is hindered by challenges in controlling lithium reactivity. Interfacial engineering is considered as a promising strategy to address this issue. This article discusses key interfacial engineering approaches used to stabilize lithium metal at interfaces, and highlights unresolved questions crucial for advancing our understanding of lithium reactivity.