Article
Energy & Fuels
Raouf Aliakbari, Elaheh Kowsari, Hamid Reza Naderi, Saeedeh Sarabadani Tafreshi, Seeram Ramakrishna, Amutha Chinnappan, Nora H. de Leeuw
Summary: In this study, graphene oxide sheets were functionalized and synthesized into GO-Amine-SSQ-Fc composite. The composite exhibited excellent electrochemical performance and high specific capacitance, indicating its potential as an electrode material for supercapacitors.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Anjana Baby, Sachin Sunny, J. Vigneshwaran, Sibi Abraham, Sujin Jose, Waseem Sharaf Saeed, Mohan Reddy Pallavolu, Jayesh Cherusseri, Sreeja Puthenveetil Balakrishnan
Summary: Electronically conducting polymers (ECPs)/carbon nanomaterial-based polyaniline electrodes have attracted significant interest in the field of supercapacitors due to their exceptional electrochemical properties. In this study, a PANI-grafted graphene oxide (GO)-azopyridine (Azo) nanocomposite was synthesized and utilized as electrodes for fabricating supercapacitors. The nanocomposite exhibited a high gravimetric capacitance of 426 F g(-1) and excellent cycling stability. An asymmetric supercapacitor constructed with PANI/GO-Azo as the positive electrode delivered a high energy density of 12.45 W h kg(-1) with a power density of 274.9 W kg(-1). These findings highlight the promising potential of the PANI/GO-Azo nanocomposite electrode for next-generation supercapacitors.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Analytical
Yanju Liu, Lulu Hao, Wenbin Wang, Huaixia Yang, Fuchun Si, Jinming Kong
Summary: This study introduced a sensitivity-improved immunosensor using functionalized graphene oxide and ring-opening polymerization strategy, demonstrating high sensitivity and applicability for detecting non-small cell lung cancer-specific biomarkers. Satisfactory results in clinical serum samples suggest the enormous potential of this immunosensor in practical clinical application.
Article
Chemistry, Multidisciplinary
Neha Choudhury, Ahyun Kim, Minseong Kim, Byeong-Su Kim
Summary: Poly(vinyl chloride) (PVC) is a widely used commodity plastic that is difficult to recycle and often discarded after use, causing environmental concerns. This study presents a mechanochemical degradation process that converts PVC into water-soluble biocompatible products. By introducing oxirane mechanophores into the polymer backbone and applying force, the polymer chain undergoes a ring-opening reaction, leading to the formation of acetals. Hydrolysis of the acetals further breaks down the polymer into low-molecular-weight fragments. This green alternative offers a solution to the environmental issues associated with PVC disposal.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Applied
Debao Mu, Chunping Feng, Wenyi Li, Dan Yuan, Yingming Yao
Summary: Four aluminum, zinc, and aluminum/zinc heterometallic complexes stabilized by o-phenylenediamine bridged poly (phenolato) ligands were synthesized and investigated for their catalytic behavior in the ring-opening polymerization of cyclohexene oxide. Heterometallic complex 4 showed significantly enhanced activity.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Ishita Naskar, Soumyadip Roy, Partha Ghosal, Melepurath Deepa
Summary: The technological importance of cost-effective zinc-doped nickel oxide (Zn:NiO) coatings is demonstrated by their applications in energy-saving electrochromic devices (ECDs) and energy-storing asymmetric supercapacitors (ASCs). A simple doping and a redox-gel significantly enhance the performance of these devices, achieving improved electrical conduction, high specific capacitance, and long cycle life. The potential of Zn doping is further showcased in panchromatic visible light modulation of ECDs, making them suitable for smart window applications.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Phong K. Quach, Jesse H. Hsu, Ivan Keresztes, Brett P. Fors, Tristan H. Lambert
Summary: The ring-opening metathesis polymerization of cyclopropenes using hydrazonium initiators was investigated. The initiators, formed by condensing 2,3-diazabicyclo[2.2.2]octane and an aldehyde, polymerize cyclopropene monomers through a sequence of [3+2] cycloaddition and cycloreversion reactions. The study showed that the monomer to initiator ratio had a positive correlation with the degree of polymerization.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Polymer Science
Zhunxuan Li, Rui Chen, Ying Wang, Linlin Zhu, Wenyi Luo, Zhen Zhang, Nikos Hadjichristidis
Summary: An efficient synthetic methodology was developed for the modification of hyperbranched polyethyleneimines (PEI) using N-sulfonyl aziridines, resulting in materials with unique fluorescence properties and the ability to remove hazardous metals.
Article
Chemistry, Physical
Xing Nie, Michael Filatov, Steven R. Kirk, Samantha Jenkins
Summary: In this study, Ehrenfest Force F(r) trajectories were used to investigate the C-O ring-opening photo-reactions of oxirane, revealing that the torsion of a CH2 group led to pathway preference. The consistency was found from hybrid Ehrenfest Force F(r) trajectories constructed using BCPs and stress tensor eigenvectors.
CHEMICAL PHYSICS LETTERS
(2021)
Review
Chemistry, Applied
Nina Guy, Olivia Giani, Sebastien Blanquer, Julien Pinaud, Jean-Jacques Robin
Summary: Photopolymerization is gaining interest in both industrial and academic fields due to its high reaction kinetics, low emissions of organic solvents, and reduced shrinking stress. This method has mainly been developed for radical polymerization of vinyl monomers and to a lesser extent for ring-opening polymerization (ROP). With the emergence of new initiating systems, the photopolymerization of various cyclic monomers has expanded beyond epoxides, which were the first monomers polymerized by cationic ring-opening polymerization (CROP).
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Polymer Science
Masato Suzuki, Aya Watanabe, Raimu Kawai, Ryo Sato, Shin-ichi Matsuoka, Susumu Kawauchi
Summary: This study reports the ring-opening polymerization of thiolactide, where thiolactic acid undergoes cyclic condensation to form rac-thiolactide, which is then polymerized using a combination of thiol as initiator and DBU as catalyst. The polymerization process was found to be in equilibrium and displayed different structural characteristics and degradability compared to polylactide.
Article
Chemistry, Physical
Xiaowu Wang, Jiwen Hui, Minmin Shi, Xinhui Kou, Xiaoxiao Li, Ronglin Zhong, Zhibo Li
Summary: In this study, a one-component Lewis pair strategy was adopted to achieve living propylene oxide polymerization and prepare high-molecular-weight polypropylene oxide. The success of this strategy is attributed to better control and rapid polymerization kinetics, utilizing the unique structures and synergistic effect of the Lewis pairs. Spectroscopic data analysis and density functional theory calculations provided insightful mechanistic understanding of this designed Lewis pair system.
Article
Energy & Fuels
Elmira Payami, Reza Teimuri-Mofrad
Summary: Graphene quantum dots were synthesized using citric acid and further modified with 4-ferrocenylbutanol to improve the electrochemical performance. Different compositions of nanocomposites were synthesized using varying amounts of CNT and Fe3O4. The final nanocomposite exhibited excellent battery-type capacity and high energy and power density, demonstrating its potential for energy storage applications.
JOURNAL OF ENERGY STORAGE
(2023)
Review
Chemistry, Multidisciplinary
Xiaoqian Wang, Ziyu Huo, Xiaoyu Xie, Narasimhamurthy Shanaiah, Rong Tong
Summary: The demand to replace unsustainable polyolefins drives the transformation of renewable resources into functional and degradable polymers. However, the properties of many degradable homopolymers are inferior to commodity polyolefins, limiting their utility. One-pot synthesis of sequence-defined copolymers from cyclic monomer mixtures is attractive in terms of concept and economics, as it maximizes materials usage and improves polymer performance. Recent advances in one-pot, sequence-controlled polymerizations of cyclic monomer mixtures using a single catalytic system that combines multiple catalytic cycles are highlighted, including the scopes of cyclic monomers, catalysts, and polymerization mechanisms.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Polymer Science
U. L. D. Inush Kalana, Partha P. Datta, Rukshika S. Hewawasam, Elizabeth T. Kiesewetter, Matthew K. Kiesewetter
Summary: This study discusses the H-bond mediated organocatalytic ring-opening polymerizations of four new thionolactone monomers, emphasizing the importance of organocatalysts in synthesizing thionolactone polymers and copolymers, as well as exploring the application of thionoester as a chemical handle in polymer backbone.
Article
Chemistry, Multidisciplinary
Hanieh Farrokhi, Sakineh Mozaffarnia, Keshvar Rahimpour, Mohammad Reza Rashidi, Reza Teimuri-Mofrad
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2020)
Article
Chemistry, Physical
Elmira Payami, Alireza Aghaiepour, Keshvar Rahimpour, Reza Mohammadi, Reza Teimuri-Mofrad
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Chemistry, Multidisciplinary
Reza Teimuri-Mofrad, Keshvar Rahimpour, Mohammad Gholizadeh
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2020)
Article
Chemistry, Applied
Keshvar Rahimpour, Ali Shafagh-Azar, Hassan Abbasi, Amir Mohammad-Gholizadeh, Zeinab Hezarkhani, Reza Teimuri-Mofrad
APPLIED ORGANOMETALLIC CHEMISTRY
(2020)
Article
Chemistry, Applied
Keshvar Rahimpour, Reza Teimuri-Mofrad
APPLIED ORGANOMETALLIC CHEMISTRY
(2020)
Article
Chemistry, Applied
Raha Hadi, Keshvar Rahimpour, Elmira Payami, Reza Teimuri-Mofrad
APPLIED ORGANOMETALLIC CHEMISTRY
(2020)
Article
Electrochemistry
Keshvar Rahimpour, Reza Teimuri-Mofrad
ELECTROCHIMICA ACTA
(2020)
Article
Chemistry, Multidisciplinary
Keshvar Rahimpour, Hassan Zarenezhad, Reza Teimuri-Mofrad
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2020)
Article
Electrochemistry
Elmira Payami, Reza Teimuri-Mofrad, Iraj Ahadzadeh, Reza Mohammadi
ELECTROCHIMICA ACTA
(2020)
Article
Chemistry, Multidisciplinary
Sakineh Mozaffarnia, Reza Teimuri-Mofrad, Mohammad-Reza Rashidi
Summary: The powerful and reusable GO-Fc@Fe3O4 nanohybrid catalyst was synthesized for multi-component reactions and designed as a new acetylcholinesterase inhibitor. Among them, compound 5f exhibited potent hAChE inhibitors, providing potential for further drug development and treatment of Alzheimer's disease.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Inorganic & Nuclear
Alireza Aghaiepour, Shabnam Rahimpour, Elmira Payami, Reza Mohammadi, Reza Teimuri-Mofrad
Summary: In this study, a novel approach was employed to increase the grafting percentage of ferrocene in the HTPB polymer framework, resulting in electro-active and optically active bis-ferrocene modified HTPBs. The fabricated electrode showed successful immobilization of the polymer, mediating dopamine oxidation with acceptable detection limits and linear ranges.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Applied
Elmira Payami, Saeed Neshad, Alireza Aghaiepour, Reza Teimuri-Mofrad
Summary: This paper focuses on the synthesis of novel ferrocene-appended porphyrin architectures and their zinc metal complexes. Tetraferrocenylporphyrins were successfully synthesized via a direct tetramerization reaction, and related zinc complexes were prepared through a metalation reaction. The structures of the new organometallic compounds were confirmed, and their redox-active properties were characterized.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Applied
Elmira Payami, Reza Teimuri-Mofrad
Summary: The research focused on the preparation of redox-active porous polymers and composite materials with high specific capacitance and excellent charge storage retention, using a cost-effective synthetic route.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Electrochemistry
Elmira Payami, Reza Teimuri-Mofrad
Summary: This study introduced a novel ternary electrode material for battery-type super-capacitor applications, which exhibited excellent electrochemical performances and was adopted for symmetric two-electrode system fabrication. The high performance electrode material was designed and synthesized via simple processes and appropriate structural analyses.
ELECTROCHIMICA ACTA
(2021)
Article
Biochemistry & Molecular Biology
Mina Hanifeh Ahagh, Gholamreza Dehghan, Majid Mahdavi, Mohammad Ali Hosseinpour Feizi, Reza Teimuri-Mofrad, Elmira Payami, Maryam Mehdipour, Samaneh Rashtbari
Summary: The study tested the cytotoxic and apoptotic induction activities of the benzochromene derivative on leukemia cells, demonstrating that 4-MC showed good anticancer potential.
NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS
(2021)
Article
Polymer Science
Yuanzhang Jiang, Xuyi Wang, Yanting Han, Dakai Gong, Yingchun Gu, Lin Tan
Summary: In this study, FeCl3 and poly(acrylic acid) (PAA) were doped into waterborne polyurethanes (WPUs) to create multifunctional materials with self-healing and antimicrobial properties. WPU/Fe/PAA-5.5, containing 5.5 wt % PAA, exhibited excellent mechanical properties, strong self-healing capabilities, and an impressive antimicrobial rate of over 90%. These supramolecular films were also highly recyclable through hot-pressing.
Article
Polymer Science
Longyu Tian, Min Wang, Guangming Liao, Baoliang Liu, Sujuan Zhang, Yucheng Sun, Zhen Meng, Jintao Zhang, Zaijun Lu
Summary: Two kinds of benzoxazine monomers were synthesized and used to prepare polybenzoxazine anion exchange membranes (AEMs) with quaternary ammonium functionalization. The LQPBZ AEM exhibited better ion conductivity and alkaline stability.
Article
Polymer Science
Claire A. Lemarchand
Summary: This study investigates the shock behavior of three different polymers through molecular dynamics simulations. The results reveal specificities in the shock behavior of polymers, including deviations from the linear relation between shock velocity and particle velocity, as well as differences in shear stress relaxation behind the shock front. It is found that the deviation of the Hugoniot locus is related to the change in the relative contribution of bonding and non-bonding potential energies, while polymers with higher glass transition temperatures exhibit slower shear stress relaxation.
Article
Polymer Science
Zengquan Liu, Xiaochun Yin, He Zhang, Shuo Gao, Qinglin Kuang, Yanhong Feng
Summary: A powder solid-state extension (PSSE) technology was proposed to address the high melt viscosity issue of UHMWPE. By uniaxial extension and sintering in the solid state, a highly self-reinforced material was prepared. X-ray diffraction and scattering techniques were used to study the structural evolution during the PSSE process, and a solid-phase induced transformation model was established.
Article
Polymer Science
Zhike Li, Anyu Luo, Rui Zhou, Xin Li, Haiyan Li
Summary: A novel high temperature resistance IL@SiO2 nanocapsules were successfully prepared and their friction and wear properties in PA6 composites were studied. The addition of IL@SiO2 nanocapsules reduced the friction coefficient and wear rate without affecting the mechanical properties of PA6. The synergy between the IL core and SiO2 wall in the nanocapsules improved the self-lubricating performance of the PA6 composites.
Article
Polymer Science
Xin Liu, Xuhong Guo, Qi Liao
Summary: In this study, an algorithm for accurately estimating viscosity is developed using molecular dynamics simulations and the Green-Kubo formula. This algorithm can be applied to complex systems with long correlations, such as macromolecular and biological simulation systems.
Article
Polymer Science
Hao Pu, Yun-Lei Hou, Jing -Zhou Chen, Dong -Lin Zhao
Summary: The use of modified graphene improves the interfacial adherence of carbon fibers to epoxy resin, resulting in enhanced interfacial and bending properties of CF and matrix in CF/EP composites, as well as increased interlaminar shear strength and flexural strength.
Article
Polymer Science
Wei-Chung Ke, Jin-Wei Lin, Manohar Reddy Busireddy, Yueh-Hsing Lee, Jiun-Tai Chen, Chain-Shu Hsu
Summary: This study introduces a crosslinkable monomer, TAIC, to synthesize three crosslinked polyimide films, which exhibit improved thermal, mechanical, and dielectric properties. The introduction of TAIC enhances the tensile strength, reduces the dielectric constant and dielectric loss, and decreases the coefficient of thermal expansion of the polyimide films.
Article
Polymer Science
Alex Kwasi Kumi, Ruiling Fan, Ye Chen, Yumei Zhang
Summary: The difference in leaching of amylopectin from cellulose/amylopectin/1-butyl-3-methylimidazolium chloride ([Bmim][Cl]) blends during regeneration in water and aqueous ethanol has been studied. Molecular dynamics simulations showed that the dissolution and regeneration mechanisms of amylopectin in [Bmim][Cl] are similar to cellulose in ionic liquids. Water regeneration leads to weak electrostatic interactions, resulting in high leaching of amylopectin. In contrast, ethanol-water interactions enhance electrostatic interactions among amylopectin chains, limiting amylopectin leaching in aqueous ethanol.
Article
Polymer Science
Xi Zeng, Junwei Zhou, Junbiao Peng, Chunsheng Zhang, Danling Wang, Yihu Song, Qiang Zheng
Summary: This study utilizes an oligomer deep eutectic solvent (DES) based on polyethylene glycol to regulate the vulcanization kinetics of rubber. The results show that the DES can accelerate vulcanization at low temperatures without affecting the crosslinking density and Mullins effect.
Article
Polymer Science
Qianqian Yue, Yongfei Peng, Xingjian Liu, Aihua He, Huarong Nie
Summary: The addition of metal deactivators can effectively suppress the aging of TBIR, prolong its lifespan, and have no negative effects on its physical and processing properties. These research findings are of great importance for improving the stability and aging resistance of polymers.
Article
Polymer Science
J. Gomez-Caturla, J. Ivorra-Martinez, R. Tejada-Oliveros, V Moreno, D. Garcia-Garcia, R. Balart
Summary: This work focuses on the development of environmentally friendly PLA formulations by using different esters derived from geraniol as plasticizers. The results show that these esters have good compatibility with PLA, and they can effectively enhance the elongation and plasticity of PLA, reduce its glass transition temperature, and slightly improve its water absorption capabilities.
Article
Polymer Science
Dandan Li, Zhaohui Lu, Zhao Ke, Ke Xu, Fengna Dai, Youhai Yu, Guangtao Qian, Chunhai Chen
Summary: In this study, cross-linked PI aerogel membranes with low dielectric constant and high moisture resistance were prepared by co-polymerization and scraping coating technology. The incorporation of fluorinated blocks and benzimidazole ring structures resulted in novel PI aerogel membranes with fascinating dielectric properties and outstanding moisture resistance.
Article
Polymer Science
Zhaoyang Chu, Qing Zhang, Haihua Luo, Han Zhou, Fapei Zhang, Wei Chen, Wenhua Zhang
Summary: Multi-physical fields solution processing strategy is a universal and facile method for preparing various conjugated polymer films and high-performance devices. In this study, we employed a combined microfluidic flow and ultrasonication strategy (FU) for processing CP solutions, and found a pronounced synergetic effect in promoting the pre-ordering of chains in solution. The conformation order and anisotropy of the solution were revealed through various characterizations. A non-classical nucleation model for polymer crystallization in non-equilibrium solution processing was confirmed. The roles of microfluidic flow and ultrasonication in chain aggregation and crystallization were addressed through multi-physical simulations. Compared to pristine solutions, the FU strategy showed improved solution anisotropy and crystallization kinetics, resulting in higher crystallinity in films and increased mobilities in OFET devices. The FU processing strategy provides a universal approach for regulating chain conformation and aggregation in conjugated polymer solutions.
