Article
Materials Science, Multidisciplinary
Ashkan Dargahi, Mark Duncan, Joel Runka, Ahmed Hammami, Hani E. Naguib
Summary: This study aimed to develop an optimum method to determine the supercritical CO2 permeability in thermoplastic films with moderate to excellent barrier properties. The time lag method yielded significant error for certain polymers, which was minimized using Non-Linear Regression (NLR). The developed generalized temperature-dependent model provided essential data for design optimization of gas barrier performance.
MATERIALS & DESIGN
(2023)
Review
Chemistry, Multidisciplinary
Wei Liu, Xiaoli Zheng, Qun Xu
Summary: Supercritical CO2 (SC CO2) is a unique fluid with properties of both gas and liquid, and it shows great potential in chemical reactions and material fabrication. Building special nanostructures using SC CO2 has been a focus of research for the past two decades, offering easier and more controlled reaction conditions compared to solvent systems. This review discusses the significance of SC CO2 in fabricating functional materials and explores the effects of SC CO2 on the structure, morphology, and composition of nanostructures. It also outlines optimization strategies and discusses the wide range of applications of these nanostructures in various fields.
Article
Pharmacology & Pharmacy
Isabela Trindade Coutinho, Ligia Passos Maia-Obi, Mathilde Champeau
Summary: The study compared drug loading efficiency and release duration of implants loaded with aspirin using soaking and supercritical CO2 (scCO(2)) impregnation methods. The results showed that scCO(2) impregnation achieved higher drug loadings and prolonged drug release compared to soaking method, indicating its adequacy for higher aspirin loadings.
Article
Multidisciplinary Sciences
Zhuojun Dai, Xiaoyu Yang, Feilun Wu, Lihua Wang, Kun Xiang, Pengcheng Li, Qingqing Lv, Jinhui Tang, Anders Dohlman, Lei Dai, Xiling Shen, Lingchong You
Summary: Cell-mediated living fabrication has the potential to create materials with versatile, programmable functions. In this study, living materials consisting of semi-interpenetrating polymer networks were engineered using bacteria encapsulated in polymeric microcapsules. These materials enhance mechanical properties and anchor effector proteins for diverse applications.
NATURE COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
A. A. Oyekanmi, H. P. S. Abdul Khalil, A. A. Rahman, E. M. Mistar, N. G. Olaiya, Tata Alfatah, Esam Bashir Yahya, Mariana Mariana, C. M. Hazwan, C. K. Abdullah
Summary: The study enhanced the properties of Euchema cottoni biopolymer films by incorporating cinnamon oil extract, resulting in improved morphology, mechanical, thermal, wetting, and antimicrobial properties. The hydrophobicity of the films increased as the concentration of cinnamon oil increased, leading to enhanced tensile strength.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Acoustics
Yuanyuan Yu, Jing Wang
Summary: Graphene has important practical significance in theoretical research and preparation of graphene/polymer composites. The effects of ultrasonic intensity and reaction time on PMMA molecular weight and yield were investigated under supercritical CO2 conditions. Optimal ultrasound intensity and initiation time were found for polymerization, leading to improved electrical conductivity in the prepared Graphene/PMMA composites.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Tonghui Jin, Mohammad Peydayesh, Mingqin Li, Yang Yao, Di Wu, Raffaele Mezzenga
Summary: The study demonstrates a method of improving the performance of solid surfaces through multifunctional surface coatings, including wettability, oil-water separation, antifouling, and antifogging, with the potential for biocatalytic activities by immobilizing enzymes.
ADVANCED MATERIALS
(2022)
Article
Engineering, Multidisciplinary
Luisa Maren Borgmann, Siegbert Johnsen, Cristine Santos de Oliveira, Juliana Silva, Juan Li, Christoph Kirchlechner, Guillaume Gomard, Gabriele Wiegand, Hendrik Hoelscher
Summary: Nowadays, there is increasing concern about the energy-intensive extraction and costly disposal of titanium dioxide (TiO2), the most commercially relevant white pigment. Studies show its potential harm for the environment and human health. In this research, an environmentally-friendly alternative white pigment is proposed by mimicking the natural prototypes of whiteness, which originate from light scattering air cavities embedded in materials with lower refractive indices. The foaming of poly(methyl methacrylate) (PMMA) microspheres using non-toxic, inert, supercritical CO2 is demonstrated as a possible replacement for TiO2 pigments.
BIOINSPIRATION & BIOMIMETICS
(2023)
Article
Pharmacology & Pharmacy
Victor Santos-Rosales, Beatriz Magarinos, Ricardo Starbird, Javier Suarez-Gonzalez, Jose B. Farina, Carmen Alvarez-Lorenzo, Carlos A. Garcia-Gonzalez
Summary: A supercritical CO2 sterilization protocol was successfully implemented to prepare and sterilize polymeric scaffolds for regenerative medicine. The sterilization conditions were established after screening against various bacteria and spores, and a transition to compressed foaming was achieved through controlled depressurization. Using this technology, sterile scaffolds with well-controlled pore architecture were obtained, surpassing standard gamma radiation sterilization methods.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2021)
Article
Chemistry, Multidisciplinary
Xianghong Ge, Hui Liu, Xingxing Ding, Yanyan Liu, Xingsheng Li, Xianli Wu, Baojun Li
Summary: This study successfully fabricated Ru@CNT composite microsponge using supercritical CO2, achieving the selective anchoring of metal nanoparticles into the internal space of carbon nanotubes. The catalytic activity of Ru@CNTs was found to be significantly influenced by the catalyst preparation temperature, hydrogenation temperature, and time.
Review
Chemistry, Multidisciplinary
Maria L. Goni, Nicolas A. Ganan, Raquel E. Martini
Summary: In recent years, the textile industry has shown a growing interest in supercritical fluid technology, particularly in the areas of dyeing and functionalization. The advantages of using supercritical carbon dioxide include improved transport properties and easier solvent recovery, resulting in faster processes, greater cost-effectiveness, and environmental friendliness.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Materials Science, Multidisciplinary
Yixin Han, Pengfei Yan, Qun Xu
Summary: As a novel functional layered material, alkali titanates have been extensively studied in various fields. The exchange of alkali metal ions with other functional cations through breaking the ionic bonds has been proven as an effective strategy for the functionalization of alkali titanate. In this study, the introduction of CO2 in the interlayer confinement space of potassium titanate was found to induce tensile stress and facilitate the exchange of H+/K+. This work provides a new efficient approach based on stress engineering to break the ionic bonds and achieve the ion-exchange process of alkali titanates.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2023)
Article
Engineering, Environmental
Hanrong Wu, Chenchen Liu, Shiyu Chu, Xiaofang Feng, Xiaobo Liu
Summary: In this study, a simple and consecutive bottom-up assembly route was developed to prepare EMI shielding films based on a super-engineering polymer. The resulting nanocomposite films exhibited excellent EMI shielding and mechanical performances, as well as resistance to multiple harsh environments.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Shengshen Gu, Aleksei N. Marianov, Yijiao Jiang
Summary: This study investigates the electrocatalytic activity of amino-substituted Co porphyrin for CO2ERR, showing that the covalently grafted complex CoTAP-cov is one of the best catalysts to date. The presence of NH2 groups and covalent grafting are essential for maximizing the activity and efficiency of the catalyst.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Materials Science, Ceramics
Zhe Liu, Yawei Zhou, Libing Qian, Zhiyuan Chen, Shiju Yang, Lei Liu, Zhihu Dong, Yong Liu, Changwei Wei, Chunqing He
Summary: By investigating the diffusion behavior of tin dopant in ITO films fabricated by RF-sputtering, this study provides direct evidence for the bleaching of tin dopant in the sub-surface region of ITO films by SCCO2 treatments and the diffusion of tin from deeper regions to the sub-surface region of the ITO films upon annealing.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Mengjiao Dong, Liyun Liao, Chensheng Li, Yingxiao Mu, Yanping Huo, Zhong-Min Su, Fushun Liang
Summary: This study investigates the influence of the polarity of polymer matrices on persistent room-temperature phosphorescence (pRTP). It is discovered that intense phosphorescence emission can be achieved in highly polar matrices such as polyacrylic acid (PAA). The dipole-dipole interaction between the polar fluorophore and polar matrix is proposed to stabilize the excited state and facilitate the generation of efficient room-temperature phosphorescence emissions.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Han-Jiang Yang, Weijia Xiang, Xiangzhou Zhang, Jin-Yun Wang, Liang-Jin Xu, Zhong-Ning Chen
Summary: This article reports a 2D copper(I)-based cluster material for X-ray imaging, which exhibits ultra-high spatial resolution, high photoluminescence efficiency, and low detection limit. The material shows excellent linear response to X-ray dose rates and light output, and has the best spatial resolution among reported lead-free metal halide hybrids.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Review
Materials Science, Multidisciplinary
Taek Joon Kim, Sang-hun Lee, Dayeong Kwon, Jinsoo Joo
Summary: Donor-acceptor heterostructures using organic-inorganic halide perovskites, two-dimensional transition metal dichalcogenides, pi-conjugated organic small/macro molecules, and quantum dots are promising platforms for exciton-based photonics and optoelectronics. Hetero-interlayer excitons and hetero-intermolecular excitons formed through optical and/or electrical charge transfer in various heterostructures are important quasi-particles for light emission, detection, and harvesting systems.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Liemao Cao, Xiaohui Deng, Zhen-kun Tang, Rui Tan, Yee Sin Ang
Summary: We investigate the interface properties between WSi2N4 and Mo2B, O-modified Mo2B, and OH-modified Mo2B nanosheets. We find that WSi2N4 and Mo2B form n-type Schottky contacts, while functionalizing Mo2B with O and OH leads to the formation of both n-type and p-type ohmic contacts with WSi2N4. Additionally, we demonstrate the emergence of quasi-ohmic contact with ultralow lateral Schottky barrier and zero vertical interfacial tunneling barriers in Mo2B(OH)2-contacted WSi2N4.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Ga Eun Kim, Hae-Jin Kim, Heesuk Jung, Minwoo Park
Summary: This study presents a solution to the commercialization challenges of flexible LEDs based on MAPbBr(3) by incorporating polyurethane and an In-Ga-Zn-Sn liquid alloy. The designed devices showed high flexibility, efficiency, and durability, with improved electron injection and reduced defects, making them promising for next-generation displays.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Tao Shen, Zeng Wu, Zhen Jiang, Dongsheng Yan, Yan Zhao, Yang Wang, Yunqi Liu
Summary: Sidechain engineering is an important molecular design strategy for tuning the solid-state packing and structural ordering of conjugated polymers. The effects of sidechain direction on the optoelectronic properties of polymers and device performance were systematically investigated in this study. The results demonstrate that tuning the sidechain substitution direction can effectively improve the molecular structure and light absorption properties of polymers, providing new insights for the rational design of functional polymers.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Lotte Clinckemalie, Bapi Pradhan, Roel Vanden Brande, Heng Zhang, Jonathan Vandenwijngaerden, Rafikul Ali Saha, Giacomo Romolini, Li Sun, Dirk Vandenbroucke, Mischa Bonn, Hai I. Wang, Elke Debroye
Summary: In this study, a facile strategy using a non-conductive polymer was proposed to fabricate stable, pinhole-free thick films. The effect of introducing a second phase into CsPbBr3 perovskite crystals on their photophysical properties and charge transport was investigated. The dual phase devices exhibited improved stability and more effective operation at higher voltages in X-ray detection.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Jingye Zou, Shenglan Hao, Pascale Gemeiner, Nicolas Guiblin, Omar Ibder, Brahim Dkhil, Charles Paillard
Summary: When rare-earth ions are embedded in a ferroelectric material, their photoluminescence can serve as an all-optical probe for temperature, electric field, and mechanical stimulus. However, the impact of ferroelectric phase transitions on photoluminescence is not well understood. In this study, we demonstrate changes in the photoluminescence of green emission bands during critical ferroelectric transitions in an Er-doped BaTiO3 material. We also find that the intensity ratio and wavelength position difference of sub-peaks provide information on the phase transitions.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Jiangchao Han, Daming Zhou, Wei Yang, Chen Lv, Xinhe Wang, Guodong Wei, Weisheng Zhao, Xiaoyang Lin, Shengbo Sang
Summary: Rare type-II spin-gapless semiconductors (SGSs) have attracted increasing attention due to their unique spin properties. In this study, the interface contacts and spin transport properties of different devices composed of VSi2P4 ferromagnetic layers were investigated. The results show that VSi2P4 is a promising material for designing vertical van der Waals heterostructures with a giant tunnel magnetoresistance (TMR) in spintronic applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Tianqi Zhao, Renagul Abdurahman, Qianting Yang, Ruxiangul Aiwaili, Xue-Bo Yin
Summary: In this study, we designed and prepared Cr and Ba-doped gamma-Ga2O3 nanoparticles to achieve near-infrared emission and enhance the emission intensity. The emission mechanism was proposed based on the trap depth, band gap, and energy levels of Cr ions. The ratiometric temperature sensing and encryption information transfer demonstrated the potential applications of this technology.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Shuvankar Gupta, Jyotirmoy Sau, Manoranjan Kumar, Chandan Mazumdar
Summary: In this study, a new spin-gapless semiconductor material CoFeMnSn is reported, and its stable structure and spin-polarized band structure are determined through experimental realization and theoretical calculations. The compound exhibits a high ferromagnetic transition temperature, making it excellent for room temperature applications. The nearly temperature-independent resistivity, conductivity, and carrier concentration of the compound, adherence to the Slater-Pauling rule, and the high intrinsic anomalous Hall conductivity achieved through hole doping further confirm its spin-gapless semiconductor nature. Additionally, the compound's SGS and topological properties make it suitable for spintronics and magneto-electronics devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Ikumi Aratani, Yoji Horii, Yoshinori Kotani, Hitoshi Osawa, Hajime Tanida, Toshiaki Ina, Takeshi Watanabe, Yohko F. Yano, Akane Mizoguchi, Daisuke Takajo, Takashi Kajiwara
Summary: In this study, two-dimensional arrays of single-molecule magnets (SMMs) based on metal-organic frameworks (MOFs) were systematically modified through Langmuir-Blodgett methods and chemical modifications. The introduction of bulky alkoxide groups induced structural changes and perpendicular magnetic anisotropy. This research provides a promising strategy for the construction of high-density magnetic memory devices using molecular spintronics.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Zonghao Lei, Houhe Dong, Lijie Sun, Bing Teng, Yanfei Zou, Degao Zhong
Summary: Researchers have successfully developed four different up-conversion phosphors based on the Eulytite-type host Ba3Yb(PO4)(3). The optical temperature sensing properties of these phosphors were thoroughly investigated, and it was found that Ba3Yb(PO4)(3):Tm/Er/Ho showed potential for optical temperature measurement applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
C. Roncero-Barrero, M. A. Carvajal, J. Ribas-Arino, I. de P. R. Moreira, M. Deumal
Summary: This study computationally investigates the conductivity of four isostructural compounds with different Se contents, and reveals the parameters that define their conductivity in stable organic radical materials. The results provide insights into the influence of Se content on the conductivity and highlight the importance of considering multiple parameters in understanding the trends in conductivity.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Remi Arras, Kedar Sharma, Lionel Calmels
Summary: In this study, we investigated the interplay between structural defects in NiFe2O4, showing that the complex formed by a Ni-Oh/Fe-Td-cation swap and a neutral oxygen vacancy is more stable than these two isolated defects, and significantly reduces the width of the minority-spin band gap.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)