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Zhang Q, Liu Z, Li B, Mu L, Sheng K, Xiong Y, Cheng J, Zhou J, Xiong Z, Zhou L, Jiang L, Wu J, Cai X, Zheng Y, Du W, Li Y, Zhu Y. Platinum-Loaded Cerium Oxide Capable of Repairing Neuronal Homeostasis for Cerebral Ischemia-Reperfusion Injury Therapy. Adv Healthc Mater 2024; 13:e2303027. [PMID: 38323853 DOI: 10.1002/adhm.202303027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 01/12/2024] [Indexed: 02/08/2024]
Abstract
Effective neuroprotective agents are required to prevent neurological damage caused by reactive oxygen species (ROS) generated by cerebral ischemia-reperfusion injury (CIRI) following an acute ischemic stroke. Herein, it is aimed to develop the neuroprotective agents of cerium oxide loaded with platinum clusters engineered modifications (Ptn-CeO2). The density functional theory calculations show that Ptn-CeO2 could effectively scavenge ROS, including hydroxyl radicals (·OH) and superoxide anions (·O2 -). In addition, Ptn-CeO2 exhibits the superoxide dismutase- and catalase-like enzyme activities, which is capable of scavenging hydrogen peroxide (H2O2). The in vitro studies show that Ptn-CeO2 could adjust the restoration of the mitochondrial metabolism to ROS homeostasis, rebalance cytokines, and feature high biocompatibility. The studies in mice CIRI demonstrate that Ptn-CeO2 could also restore cytokine levels, reduce cysteine aspartate-specific protease (cleaved Caspase 3) levels, and induce the polarization of microglia to M2-type macrophages, thus inhibiting the inflammatory responses. As a result, Ptn-CeO2 inhibits the reperfusion-induced neuronal apoptosis, relieves the infarct volume, reduces the neurological severity score, and improves cognitive function. Overall, these findings suggest that the prominent neuroprotective effect of the engineered Ptn-CeO2 has a significant neuroprotective effect and provides a potential therapeutic alternative for CIRI.
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Affiliation(s)
- Qiang Zhang
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Zihao Liu
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Bo Li
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 160, Pujian Road, Pudong District, Shanghai, 200127, China
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, No. 160, Pujian Road, Pudong District, Shanghai, 200127, China
| | - Liuhua Mu
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325001, China
- School of Physical Science, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Kai Sheng
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Yijia Xiong
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Jiahui Cheng
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 160, Pujian Road, Pudong District, Shanghai, 200127, China
| | - Jia Zhou
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Zhi Xiong
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Lingling Zhou
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Lixian Jiang
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Jianrong Wu
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Xiaojun Cai
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Yuanyi Zheng
- Department of Ultrasound in Medicine, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Wenxian Du
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Yuehua Li
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
| | - Yueqi Zhu
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, No. 600, Yishan Road, Xuhui District, Shanghai, 200233, China
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Zhang Z, Cui R, Jiang X, Yu C, Zhou Y. Effect of ionic groups on the morphology and transport properties in a novel perfluorinated ionomer containing sulfonic and phosphonic acid groups: a molecular dynamics study. Phys Chem Chem Phys 2024; 26:12806-12819. [PMID: 38619877 DOI: 10.1039/d4cp00962b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Combining the phosphonic acid group with the sulfonic acid group in PEMs has been shown to be an effective strategy for improving the fuel cell performance. However, the interplay of two different ionic groups and the resulting effect on the membrane properties have not been fully elucidated. Here, we used classical molecular dynamics simulation to investigate the morphologies, transport properties and effects of ionic groups in a novel perfluorinated PEM containing two ionic groups (PFSA-PFPA) in comparison to the corresponding homopolymers. Phase separations between hydrophilic and hydrophobic domains are confirmed in these PEMs and result from the evolution of water clusters formed around the ionic groups. The combination of both ionic groups brings a complicated morphological feature in PFSA-PFPA, with near-cylindrical aqueous domains of large length scales interconnected by tortuous domains of small sizes. And we found that the self-diffusion coefficients of water molecules are strongly related to morphologies, with the water transport in PFSA-PFPA lying between two analogous homopolymers. At the molecular level, we found that the sulfonic and phosphonic acid groups have distinct effects on the coordination behaviors and the dynamics of water molecules and hydronium ions. Strong electrostatic interactions lead to compact coordination structures and sluggish dynamics of hydronium ions around phosphonic acid groups, which determine the morphological evolution and transport properties in PFSA-PFPA. Our study affords insights into the relationship between molecular characteristics and transport properties bridged by phase-separated morphologies in a novel PEM containing both sulfonic acid and phosphonic acid groups, which deepens the understanding of the interplay between two ionic groups and may inspire the rational design of high-performance PEMs.
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Affiliation(s)
- Zongwei Zhang
- School of Chemistry & Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
| | - Rui Cui
- School of Chemistry & Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
| | - Xuesong Jiang
- School of Chemistry & Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
- Key Laboratory of Green and High-end Utilization of Salt Lake Resources, Chinese Academy of Sciences, China
| | - Chunyang Yu
- School of Chemistry & Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
- Key Laboratory of Green and High-end Utilization of Salt Lake Resources, Chinese Academy of Sciences, China
| | - Yongfeng Zhou
- School of Chemistry & Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
- Key Laboratory of Green and High-end Utilization of Salt Lake Resources, Chinese Academy of Sciences, China
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Chen J, Warner MJ, Sikora B, Kiddle D, Coverdell D, Allam O, Kohl PA, Jang SS. The selective heating effect of microwave irradiation on a binary mixture of water and polyethylene oxide: a molecular dynamics simulation approach. Phys Chem Chem Phys 2023; 25:12522-12531. [PMID: 37133822 DOI: 10.1039/d3cp00349c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
In this study, we investigate the molecular mechanisms of a microwave-driven selective heating process by performing molecular dynamics simulations for three different systems including pure water, pure polyethylene oxide (PEO), and water-PEO mixed systems in the presence of a microwave with two different intensities of electric field such as 0.001 V Å-1 and 0.01 V Å-1 at a frequency of 100 GHz. First, from performing molecular dynamics simulations of CO and CO2 in the presence of the microwave, it is confirmed that the molecular dipole moment is responsible for the rotational motion induced by the oscillating electric field. Second, by analyzing the MD simulations of the pure water system, we discover that the dipole moment of water exhibits a time lag with respect to the microwave. During the heating process, however, the temperature, kinetic, and potential energies increase synchronously with the oscillating electric field of the microwave, showing that the heating of the water system is caused by the molecular reaction of water to the microwave. Comparing the water-PEO mixed system to the pure water and pure PEO systems, the water-PEO mixed system has a higher heating rate than the pure PEO system but a lower heating rate than the pure water system. Therefore, we conclude that heating the water-PEO mixed system is driven by water molecules selectively activated by microwave irradiation. We also calculate the diffusion coefficients of water molecules and PEO chains by describing their mean square displacements, demonstrating that the diffusion coefficients are increased in the presence of microwaves for both water and PEO in pure and mixed systems. Lastly, during the microwave heating process, the structures of the water-PEO mixed system are altered as a function of the intensity of electric field, which is mainly driven by the response of water molecules.
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Affiliation(s)
- Junhe Chen
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, 30332-0245, USA.
| | - Matthew J Warner
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, GA 30332-0100, USA
| | - Benjamin Sikora
- Department of Energy's Kansas City National Security Campus managed by Honeywell, 14520 Botts Road, Kansas City, MO 64147, USA
| | - Daniel Kiddle
- Department of Energy's Kansas City National Security Campus managed by Honeywell, 14520 Botts Road, Kansas City, MO 64147, USA
| | - Danielle Coverdell
- Department of Energy's Kansas City National Security Campus managed by Honeywell, 14520 Botts Road, Kansas City, MO 64147, USA
| | - Omar Allam
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, 30332-0245, USA.
- The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 801 Ferst Drive NW, Atlanta, Georgia 30332-0405, USA
| | - Paul A Kohl
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, GA 30332-0100, USA
| | - Seung Soon Jang
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, 30332-0245, USA.
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Salim MG, Vasudevan V, Schulman N, Zamani S, Kersey KD, Joshi Y, AlAmer M, Choi JI, Jang SS, Joo YL. Thermoresponsive Conductivity of Graphene-Based Fibers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2204981. [PMID: 36828800 DOI: 10.1002/smll.202204981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 02/07/2023] [Indexed: 05/18/2023]
Abstract
Smart materials are versatile material systems which exhibit a measurable response to external stimuli. Recently, smart material systems have been developed which incorporate graphene in order to share on its various advantageous properties, such as mechanical strength, electrical conductivity, and thermal conductivity as well as to achieve unique stimuli-dependent responses. Here, a graphene fiber-based smart material that exhibits reversible electrical conductivity switching at a relatively low temperature (60 °C), is reported. Using molecular dynamics (MD) simulation and density functional theory-based non-equilibrium Green's function (DFT-NEGF) approach, it is revealed that this thermo-response behavior is due to the change in configuration of amphiphilic triblock dispersant molecules occurring in the graphene fiber during heating or cooling. These conformational changes alter the total number of graphene-graphene contacts within the composite material system, and thus the electrical conductivity as well. Additionally, this graphene fiber fabrication approach uses a scalable, facile, water-based method, that makes it easy to modify material composition ratios. In all, this work represents an important step forward to enable complete functional tuning of graphene-based smart materials at the nanoscale while increasing commercialization viability.
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Affiliation(s)
- Muhammad G Salim
- Robert Fredrick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Vaibhav Vasudevan
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA
| | - Nicholas Schulman
- Robert Fredrick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Somayeh Zamani
- Robert Fredrick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Kyle D Kersey
- Robert Fredrick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Yash Joshi
- Robert Fredrick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Mohammed AlAmer
- Robert Fredrick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Ji Il Choi
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA
| | - Seung Soon Jang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA
| | - Yong Lak Joo
- Robert Fredrick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
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Cui R, Li S, Yu C, Zhou Y. The Evolution of Hydrogen Bond Network in Nafion via Molecular Dynamics Simulation. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Affiliation(s)
- Rui Cui
- School of Chemistry & Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Shanlong Li
- School of Chemistry & Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Chunyang Yu
- School of Chemistry & Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Yongfeng Zhou
- School of Chemistry & Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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Cui R, Li S, Yu C, Wang Y, Zhou Y. Understanding the mechanism of nitrogen transport in the perfluorinated sulfonic-acid hydrated membranes via molecular dynamics simulations. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Wang J, Chen J, Xu Z, Yang X, Ramakrishna S, Liu Y. Mesoscale hydrated morphology of perfluorosulfonic acid membranes. J Appl Polym Sci 2022. [DOI: 10.1002/app.52275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jihao Wang
- Beijing Key Laboratory of Advanced Functional Polymer Composites, College of Materials Science and Engineering Beijing University of Chemical Technology Beijing China
| | - Jia Chen
- Beijing Key Laboratory of Advanced Functional Polymer Composites, College of Materials Science and Engineering Beijing University of Chemical Technology Beijing China
| | - Zhiyang Xu
- Beijing Key Laboratory of Advanced Functional Polymer Composites, College of Materials Science and Engineering Beijing University of Chemical Technology Beijing China
| | - Xiaozhen Yang
- State Key Laboratory of Polymer Physics and Chemistry Institute of Chemistry, Chinese Academy of Science Beijing China
| | - Seeram Ramakrishna
- Nanoscience and Nanotechnology Initiative National University of Singapore Singapore Singapore
| | - Yong Liu
- Beijing Key Laboratory of Advanced Functional Polymer Composites, College of Materials Science and Engineering Beijing University of Chemical Technology Beijing China
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Lawler R, Liu YH, Majaya N, Allam O, Ju H, Kim JY, Jang SS. DFT-Machine Learning Approach for Accurate Prediction of p Ka. J Phys Chem A 2021; 125:8712-8722. [PMID: 34554744 DOI: 10.1021/acs.jpca.1c05031] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this study, we propose a novel method of pKa prediction in a diverse set of acids, which combines density functional theory (DFT) method with machine learning (ML) methods. First, the DFT method with B3LYP/6-31++G**/SM8 is used to predict pKa, yielding a mean absolute error of 1.85 pKa units. Subsequently, such pKa values predicted from the DFT method are employed as one of 10 molecular descriptors for developing ML models trained on experimental data. Kernel Ridge Regression (KRR), Gaussian Process Regression, and Artificial Neural Network are optimized using three Pipelines: Pipeline 1 involving only hyperparameter optimization (HPO), Pipeline 2 involving HPO followed by a relative contribution analysis (RCA) and recursive feature elimination (RFE), and Pipeline 3 involving HPO followed by RCA and RFE on an expanded set of composite features. Finally, it is demonstrated that KRR with Pipeline 3 yields optimal pKa prediction at an MAE of 0.60 log units. This algorithm was then utilized to predict the pKa of 37 novel acids. The two most important features were determined to be the number of hydrogen atoms in the molecule and the degree of oxidation of the acid. The predicted pKa values were documented for future reference.
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Affiliation(s)
- Robin Lawler
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States.,School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Yao-Hao Liu
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
| | - Nessa Majaya
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
| | - Omar Allam
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States.,G. W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Hyunchul Ju
- Department of Mechanical Engineering, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea
| | - Jin Young Kim
- Center for Hydrogen Fuel Cell Research, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Seung Soon Jang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
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