Article
Chemistry, Physical
Rachel L. Goodlett, Ammon J. Sindt, Muhammad Saddam Hossain, Rajkumar Merugu, Mark D. Smith, Sophya Garashchuk, Anna D. Gudmundsdottir, Linda S. Shimizu
Summary: This study investigates the effects of crystalline structure and geometry on benzophenone photophysics and self-quenching, as well as the regenerable formation of persistent triplet radical pairs in solid-state assembly. The results show that subtle differences in the structure of the crystalline frameworks can modulate the concentration of photogenerated radicals and phosphorescence quantum efficiency, affecting n-type self-quenching.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Qianfeng Gu, Xiangqian Lu, Cailing Chen, Renjie Hu, Xin Wang, Guohan Sun, Fangyuan Kang, Jinglun Yang, Xiang Wang, Jinghang Wu, Yang Yang Li, Yung-Kang Peng, Wei Qin, Yu Han, Xiaogang Liu, Qichun Zhang
Summary: In this study, three p-phenylenediacetonitrile-based COFs were synthesized and transformed into persistent radical forms through heat treatment, accompanied by observable changes. Theoretical simulation revealed that lower total energy and nonzero spin density are the key factors for the persistence of COF radicals and polarized spin distributions.
Article
Chemistry, Multidisciplinary
Jian Su, Ning Xu, Ryuichi Murase, Zhi-Mei Yang, Deanna M. D'Alessandro, Jing-Lin Zuo, Jia Zhu
Summary: A series of stable radical 2D metal-organic frameworks have been assembled using (m-TTFTB)(3) (m-Tetrathiafulvalene-tetrabenzoate) trimer building blocks. The stability of the radicals is enhanced by hexanuclear rare-earth-cluster-based 1D chains. The radical characteristics are confirmed through various experiments, and the frameworks exhibit excellent photothermal properties and stability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Environmental
Ziwei Wang, Piao Xu, Han Wang, Eydhah Almatrafi, Chengyun Zhou, Yangzhuo He, Hailan Yang, Sha Chen, Wangwang Tang, Zhuotong Zeng, Guangming Zeng
Summary: Formation of environmentally persistent free radicals (EPFRs) on carbonaceous material has attracted increasing research attention. In this study, EPFRs were detected in Bi-metal organic layers (Bi-MOLs) derivatives, as well as in HKUST-1 and UiO-66 based derivatives. The system with the highest EPFRs concentration showed superior photocatalytic performance, mainly attributed to the interaction between EPFRs and photoinduced active species, leading to more generation of reactive oxygen species (ROS) radicals. Mechanism investigation and DFT calculation suggested that EPFRs not only promote the generation of ROS but also enhance water oxidation by holes, paving the way for further implication of MOFs derivatives and understanding the role of EPFRs in photocatalysis.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Hsinhan Tsai, Hsin-Hsiang Huang, John Watt, Cheng-Hung Hou, Joseph Strzalka, Jing-Jong Shyue, Leeyih Wang, Wanyi Nie
Summary: This study demonstrates the use of CsPb(BrCl)(1.5) nanocrystals in MOF thin films for the fabrication of bright and stable blue LEDs. These LEDs achieve high external quantum efficiencies and can maintain 50% of their original brightness for 2.23 hours when driven at 4.2 V.
Article
Engineering, Environmental
Goutham Rangarajan, Ramin Farnood
Summary: This study reports the synthesis of H2SO4-modified biochars as solid-acid catalysts to activate H2O2 under visible light radiation. Results showed that under photo-Fenton conditions, SBC500 can achieve complete MO removal and a TOC reduction.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zheng Wang, Jun-Ting Mo, Jun-Jie Pan, Mei Pan
Summary: In this study, three metal halide-based complexes exhibiting standard white light emission and excitation-dependent room temperature phosphorescence were synthesized. The bright room temperature phosphorescence is attributed to the crown ether ligand and aggregation state induced by halogen bond. These materials have potential applications in lighting and displaying devices, optical recording devices, and security systems.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Malte Sellin, Matthis Seiler, Maximilian Maylaender, Konstantin Kloiber, Valentin Radke, Stefan Weber, Sabine Richert, Ingo Krossing
Summary: This study prepared stable unsubstituted acenium radical cation (ARC) salts with weakly coordinating anions at room temperature, and characterized them structurally, electrochemically, and spectroscopically. For the first time, a homogenous set of spectroscopic data on analytically pure ARC salts was obtained. In addition, cyclovoltammetric measurements linked the potentials of acenium cations in solution with those in the gas phase.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Mohammednoor Altarawneh, Niveen W. Assaf, Hamed M. Hussain, Bogdan Z. Dlugogorski
Summary: Alumina oxides are widely used as catalysts or catalyst supports and play a critical role in the synthesis of EPFRs. This review explores the structural features of alumina surfaces and their role in EPFR synthesis, with a focus on active Lewis acid-base sites. Future studies can investigate alternative methods for EPFR synthesis on alumina surfaces.
NANOTECHNOLOGY REVIEWS
(2023)
Article
Chemistry, Analytical
Long Yu, Qutong Zheng, Li Xiong, Lixiang Feng, Yuxiu Xiao
Summary: A rapid and sensitive sensor for decoding organic solvents and detecting water content is developed. The sensor is based on a dual-lanthanide metal-organic framework and utilizes innovative response mechanisms to precisely regulate the energy transfer. The sensor achieves ultra-low limit of detection, broad response range, and high-fluorescence color changing. A logic device based on the sensor is designed for easy water detection, similar to a smart traffic light sensor. Additionally, a paper microsensor is constructed for real-time detection of trace water in organic solvents.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Mei-Hua Yan, Manaswini Ray, Jun Wang, Lu Lu, Wei Zhang, Mohd. Muddassir, Aurobinda Mohanty
Summary: The incremental use of herbicides is causing pollution in aquatic systems, and it is necessary to decompose the harmful components in wastewater. In this study, three high-stability metal-organic frameworks (MOFs) were synthesized and found to have high catalytic activities for degrading various pesticides in water.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Jingchao Xiang, Jingjun Li, Xue Yang, Shuiying Gao, Rong Cao
Summary: Visible-light-driven photocatalytic H2 evolution coupled with oxidative organic synthesis is attracting attention due to its environmental friendliness and sustainability. In this work, a novel CdS/PFC-8 catalyst was synthesized and demonstrated excellent photocatalytic H2 evolution and benzyl alcohol oxidation under visible light. The catalyst was characterized and its performance confirmed the visible-light response and photocatalytic feasibility of the CdS/PFC-8 composite.
ACTA PHYSICO-CHIMICA SINICA
(2023)
Article
Chemistry, Physical
Dengke Wang, Hui Zeng, Siqi Chen, Lei Tian, Dongmei Hou, Yi Mu, Shaolin Wu, Jian-Ping Zou
Summary: In this study, a novel system involving the selective regulation of peroxydisulfate (PDS) activation-to-hydroxyl radical (OH) production was investigated using Fe-based metal-organic frameworks (MOF; MIL-100(Fe)). The constructed PDS/MIL-100(Fe) system showed improved performance in organic degradation rate and PDS utilization efficiency compared to the traditional sulfate radical (SO4·-) mediated PDS/MIL-68(Fe) system. This work provides new insights into the regulation of PDS activation to OH generation over heterogeneous catalysis.
JOURNAL OF CATALYSIS
(2022)
Article
Nanoscience & Nanotechnology
Jiaming Gu, Xiaodong Sun, Liang Kan, Junyi Qiao, Guanghua Li, Yunling Liu
Summary: Three zirconium-organic frameworks with different structures and light hydrocarbon adsorption/separation capabilities were successfully constructed by regulating the spatial configuration and functional groups of organic ligands. These findings demonstrate the feasibility of structural regulation for MOF materials in the light hydrocarbon adsorption/separation field.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Biochemistry & Molecular Biology
Chen Hou, Wenqiang Chen, Linhui Fu, Sufeng Zhang, Chen Liang, Yang Wang
Summary: The lignin/PVA/bi-MOFs composite membrane was fabricated for catalytic degradation of PFOA under solar light irradiation. It showed outstanding performance with 89.6% of PFOA degraded within 3 hours under optimal conditions.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Multidisciplinary
Ingo Helmers, Muhammad Saddam Hossain, Nils Baumer, Paul Wesarg, Bartolome Soberats, Linda S. Shimizu, Gustavo Fernandez
Summary: By enforcing an anti-cooperative self-assembly, we have achieved a maintained emissive behavior in the self-assembled state and limited the growth of the assembly. This research finding is significant for the study of emissive supramolecular assemblies and controlled supramolecular polymerization.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Dustin W. Goodlett, Ammon J. Sindt, Md Faizul Islam, Mark D. Smith, Linda S. Shimizu
Summary: Supramolecular self-assembly of brominated triphenyl amine bis-urea macrocycles leads to the formation of porous organic crystals with unidirectional pores, which have been applied for the enrichment of xylene isomeric mixtures. The host exhibits selectivity and robustness in multiple separations, providing energy efficient alternatives for separating complex petrochemical feed mixtures.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Biochemistry & Molecular Biology
Rahul Prakash, Dustin W. Goodlett, Sheelu Varghese, Justyna Andrys, Fahidat A. Gbadamosi, Ricardo H. Arriaza, Megha Patel, Purushottam B. Tiwari, Tomasz Borowski, Maksymilian Chruszcz, Linda S. Shimizu, Geeta Upadhyay
Summary: The small molecule NSC243928 binds to LY6K and induces cancer cell death, but the mechanism is unclear. We have developed chemical tools to understand the molecular mechanisms of NSC243928-LY6K interaction.
BIOORGANIC & MEDICINAL CHEMISTRY
(2023)
Article
Green & Sustainable Science & Technology
Mst. Kaniz Fatema, Muhammad Abdullah Al Mamun, Umakanta Sarker, Muhammad Saddam Hossain, Muhammad Abdul Baset Mia, Rajib Roychowdhury, Sezai Ercisli, Romina Alina Marc, Olubukola Oluranti Babalola, Muhammad Abdul Karim
Summary: Drought stress negatively impacted the growth and biochemical content of soybean, but the genotype AGS383 was minimally affected and exhibited superior traits under drought conditions. This genotype showed healthier root and shoot growth, greater leaf area, higher photosynthesis, and better water absorption and potential compared to other genotypes. It also produced lower levels of proline and malondialdehyde. The heavier grains of AGS383 resulted in higher yield under both normal and drought conditions. Further research is needed to identify the genes responsible for AGS383's adaptation to drought stress.
Article
Oncology
Benson Chellakkan Selvanesan, Sheelu Varghese, Justyna Andrys-Olek, Ricardo Hernandez Arriaza, Rahul Prakash, Purushottam Babu Tiwari, Daniel Hupalo, Yuriy Gusev, Megha Nitin Patel, Sara Contente, Miloslav Sanda, Aykut Uren, Matthew D. Wilkerson, Clifton Lee Dalgard, Linda S. Shimizu, Maksymilian Chruszcz, Tomasz Borowski, Geeta Upadhyay
Summary: LY6K is a small GPI-linked protein expressed in testes and its increased expression is associated with poor survival outcomes in various solid cancers. This report reveals a novel role of LY6K in mitosis and cytokinesis through aurora B kinase and histone H3 signaling axis. The interaction of small molecule NSC243928 with LY6K disrupts LY6K-aurora B signaling, resulting in failed cytokinesis, DNA damage, senescence, and apoptosis of cancer cells. Inhibition of LY6K signaling could be a potential therapeutic approach for hard-to-treat cancers.
Article
Chemistry, Multidisciplinary
Rahul Prakash, Md Faizul Islam, Rajeen Madawa Kothalawala, Muhammad Saddam Hossain, Mark D. Smith, Linda S. Shimizu
Summary: In this study, the hydrogen bond-driven self-assembly of a triphenylamine (TPA) bis-urea macrocycle in the presence and absence of guests was investigated. The assembly behavior and structural characteristics were analyzed using various spectroscopic and microscopy techniques. The results indicate that the function and utility of these supramolecular systems can be modulated by the selection of suitable monomers.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Physical
Sophya Garashchuk, Julian Stetzler, Vitaly Rassolov
Summary: We propose a quantum dynamics approach for molecular systems based on wave function factorization into components describing light and heavy particles. The dynamics of the nuclear subsystem is viewed as motion of trajectories defined in the nuclear subspace, evolving according to the average nuclear momentum. The probability density flow between the nuclear and electronic subsystems is facilitated by an imaginary potential, derived to ensure normalization of the electronic wave function and conservation of probability density.
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2023)
Article
Chemistry, Multidisciplinary
Llorenc Rubert, Md Faizul Islam, Andrew B. Greytak, Rahul Prakash, Mark D. Smith, Rosa Maria Gomila, Antonio Frontera, Linda S. Shimizu, Bartolome Soberats
Summary: We reported the self-assembly of a dendronized bis-urea macrocycle into two-dimensional nanosheets via a cooperative mechanism. The self-assembly mode of the macrocycle changed drastically in different solvents, and the formation of two-dimensional networks was promoted by solvent effects and a sophisticated hydrogen-bonding pattern.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Huina Lin, Luis Ramos, JiHyeon Hwang, Tianyu Zhu, Md Waliullah Hossain, Qi Wang, Sophya Garashchuk, Chuanbing Tang
Summary: Cationic metallopolymers with a complete hydrocarbon framework were synthesized and used as anion-exchange membranes in alkaline fuel cells. These polymers showed high chemical and thermal stability, low swelling, and favorable mechanical properties. They exhibited high hydroxide conductivity and retained 94% of the conductivity after exposure to high alkaline conditions for 45 days. The main-chain hydrocarbon-based polymers were found to have lower water uptake and swelling ratio compared to side-chain cobaltocenium polymer-based AEMs, while maintaining similar ion exchange capacity and hydroxide conductivity.
Article
Chemistry, Physical
Sachith Wickramasinghe, Alexandria Hoehn, Shehani T. Wetthasinghe, Huina Lin, Qi Wang, Jacek Jakowski, Vitaly Rassolov, Chuanbing Tang, Sophya Garashchuk
Summary: In this study, the diffusion of hydroxide ions in the presence of cobaltocenium cations in an aqueous environment was investigated using molecular dynamics simulations. The research reveals that hydroxide diffusion is influenced by channel size, modulation of electrostatic interactions by solvation shell, and its rearrangement ability. The highest diffusion coefficient was observed under moderate water densities.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Chemistry, Physical
Muhammad Saddam Hossain, Fiaz Ahmed, Stavros G. Karakalos, Mark D. Smith, Namrata Pant, Sophya Garashchuk, Andrew B. Greytak, Pablo Docampo, Linda S. Shimizu
Summary: This study reports on the structural, computational, and conductivity studies of urea-directed self-assembled iodinated triphenylamine derivatives. It compares the assembled structures of different derivatives and their charge transport properties, showcasing one derivative with higher conductivity due to urea hydrogen bonding and specific interactions, making it a potential dopant-free p-type hole transporter.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
JiHyeon Hwang, Daniella V. Martinez, Estevan J. Martinez, Gift Metavarayuth, Dustin Goodlett, Qi Wang, Mitra Ganewatta, Michael S. Kent, Chuanbing Tang
Summary: This study utilized chelator-mediated Fenton chemistry to oxidize lignin and develop sustainable super absorbent materials. The chemically modified lignin-based hydrogels exhibited high water absorption and swelling properties, making them suitable for water-absorbing products in consumer goods and agriculture.