Article
Multidisciplinary Sciences
Nitesh Chauhan, Andrei Isichenko, Kaikai Liu, Jiawei Wang, Qiancheng Zhao, Ryan O. Behunin, Peter T. Rakich, Andrew M. Jayich, C. Fertig, C. W. Hoyt, Daniel J. Blumenthal
Summary: The study demonstrates highly coherent emission of visible light lasers, providing important tools and technological support for research in atomic, molecular, and optical physics.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Alexey Semenov, Andrei Lugovtsov, Petr Ermolinskiy, Kisung Lee, Alexander Priezzhev
Summary: This study evaluates the feasibility of optical techniques in assessing micro-rheological effects on red blood cells, which can provide valuable insights for clinical hemorheological practice.
Article
Materials Science, Paper & Wood
Yuna Tanaka, Naoya Fukuda, Naliharifetra Jessica Ranaivoarimanana, Mayumi Hatakeyama, Takuya Kitaoka
Summary: In this work, spherical microparticles with core-shell structures were fabricated using TEMPO-oxidized cellulose nanofiber (TOCNF) and cellulose diacetate (CDA) via Pickering emulsion templating. The prepared microparticles exhibited good stability in water and negatively-charged TOCNF on the particle surface. The furry nanofiber-like morphology was observed on the surface of the microspheres. These wood-derived CDA/TOCNF microspheres show great potential as a substitute for non-biodegradable microbeads in cosmetic applications.
Review
Chemistry, Applied
Yuko Ono, Akira Isogai
Summary: Size-exclusion chromatography with multi-angle laser-light scattering and refractive index detection (SEC/MALLS/RI) provides detailed information on the number- and weight-average molar masses, molar mass distributions, conformations, and linear/branched structures of polymers. By dissolving in a solvent system similar to 8% (w/w) LiC1/DMAc, analysis can be conducted on pure celluloses, chemical wood pulps, and plant holocelluloses. The results vary depending on the cellulose and holocellulose resources, with linear and random-coil conformations observed in pure celluloses and high-molar-mass cellulose fractions. Softwood holocellulose and bleached kraft pulp, on the other hand, exhibit alkali-stable cellulose/glucomannan branched structures in the high-molar-mass fractions.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Multidisciplinary
Han Yang, Gianni Jacucci, Lukas Schertel, Silvia Vignolini
Summary: In this study, various types of cellulose-based microparticles (CMPs) were introduced as biocompatible alternatives to high refractive index inorganic nanoparticles for efficient light scattering. The cellulose-based particles demonstrated excellent optical performance and were successfully used in the fabrication of scattering materials and high transmittance/haze films. The renewable nature and biocompatibility of these systems make them particularly suitable for applications in paints, LEDs, and solar cell devices, as well as in food and pharmaceutical coatings where component biocompatibility is essential.
Article
Chemistry, Physical
Hyon-Tae Pak, Jin-A Choe, Kyong-Sik Ju, Yong -Son Rim
Summary: Drug-loaded cellulose diacetate (CDA) membranes were prepared using different compositions of mixed solvent. The microstructure and performance of the membranes were investigated, and a method to predict drug release properties was proposed. The results showed that the composition of the mixed solvent significantly affected the overall performance of CDA membranes, and the release rates of drugs were related to Δdelta and the intrinsic viscosity of CDA.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Materials Science, Multidisciplinary
Wencheng Liang, Mingli Jiang, Junyong Zhang, Xiaoming Dou, Yan Zhou, Yun Jiang, Li Zhao, Meidong Lang
Summary: In this study, novel antibacterial composite scaffolds were prepared with improved water absorption rate, water retention rate, and mechanical strength compared to traditional scaffolds. The addition of hyaluronic acid enhanced the biocompatibility of the scaffolds, and the positive charge in the scaffolds contributed to their antibacterial activity. The scaffolds showed potential for wound healing and could be used as wound dressings.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Qian Zhang, Yanfei Xin, Hengjie Qin, Zhanglian Xu, Yuanzhen Chen, Sheng Wang
Summary: In this work, nitrogen/oxygen codoped activated carbons with an inverse opal-like structure were synthesized and showed promising potential as electrode materials for high performance supercapacitors. The introduction of nitrogen and intrinsic oxygen contributed to additional pseudocapacitance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Biochemical Research Methods
Lina Liu, Md Zahurul Islam, Xiaoxuan Liu, Manisha Gupta, Wojciech Rozmus, Mrinal Mandal, Ying Yin Tsui
Summary: Cell identification and analysis are crucial in many biology- and health-related applications. Optical microscopy cannot provide clear images of the complex internal and surface structures of cells. This study investigates the effects of probing laser wavelength on label-free cell identification using single-cell angular laser-light scattering patterns (ALSP). Machine learning analysis reveals that the backward scattering direction is best for characterizing surface roughness, while the forward scattering direction is best for differentiating the number of mitochondria. Red or green laser light performs better than blue light in distinguishing surface roughness and the number of mitochondria.
Article
Engineering, Chemical
Riting Su, Xing Yu, Zhanping Yang, Haijian Huang, Yinchun Liang
Summary: The rheological properties of cellulose diacetate in acetone solutions are influenced by intrinsic viscosity and concentration, with evidence suggesting the formation of sulfate structures. An increase in hemicellulose and sulfur content enhances chain entanglements and solution viscosity. At a critical concentration, long-range entangled networks form, affecting rheological behavior.
POLYMER ENGINEERING AND SCIENCE
(2021)
Review
Chemistry, Multidisciplinary
Pietro Anzini, Daniele Redoglio, Mattia Rocco, Norberto Masciocchi, Fabio Ferri
Summary: Light scattering and turbidimetry techniques are important methods for characterizing the dynamics and structure of nanoparticles and nanostructured networks. They probe different length scales and can be used to characterize different types of samples.
Article
Gastroenterology & Hepatology
Monica Passi, Valentyn Stadnytskyi, Philip Anfinrud, Christopher Koh
Summary: The study aimed to objectively demonstrate that upper GI endoscopy is an aerosol-generating procedure (AGP) and illustrate the mechanism by which aerosolization of droplets may occur during endoscopy. Using experimental apparatuses modeling the upper GI tract, the researchers found that insertion and withdrawal of the endoscope generated numerous aerosolized particles, while passage of tools through the endoscopic working channel generated fewer particles. These findings have implications for transmission risk mitigation during GI endoscopy.
GASTROINTESTINAL ENDOSCOPY
(2022)
Article
Multidisciplinary Sciences
Emanuele Scalone, Luca Broggini, Cristina Visentin, Davide Erba, Fran Bacic Toplek, Kaliroi Peqini, Sara Pellegrino, Stefano Ricagno, Cristina Paissoni, Carlo Camilloni
Summary: Understanding the mechanisms of protein aggregation is crucial for treating over 50 incurable diseases. A new hybrid structure model presented in this study effectively captures the essential structural and kinetic aspects of protein aggregation through molecular dynamics simulations. This model can help observe the formation of primary nuclei and the growth of fibrils, providing a structural basis for designing drugs targeting amyloidogenic diseases.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Multidisciplinary
Luigi Gentile, Helena Mateos, Antonia Mallardi, Marcella Dell'Aglio, Alessandro De Giacomo, Nicola Cioffi, Gerardo Palazzo
Summary: Gold nanoparticles synthesized by ns-pulsed laser ablation in liquid without capping agents are potential model systems for studying interactions with biological structures. Small-angle X-ray scattering and dynamic light scattering were used to investigate the structure of the AuNPs, showing the presence of fractal clusters stabilized by strong repulsive interactions. The fractal dimension was estimated to be 1.9, indicating a stable population of fractal clusters with colloidal stability.
JOURNAL OF NANOPARTICLE RESEARCH
(2021)
Article
Chemistry, Analytical
Bokai Ma, Yingjie Shi, Nan Jiang, Yumeng Yang, Yuantao Yang, Chong Qian, Na Liu, Wei Wang, Rui Liu
Summary: Tinuvin 622 is a commonly used light stabilizer in plastics, and its detection is crucial for quality control of plastic products. Traditional analytical methods have limitations in achieving direct qualitative and quantitative analysis, as well as obtaining molecular weight distribution information. In this study, gel permeation chromatography combined with multi-angle laser light scattering was proposed for the first time as a simple and direct method for detecting Tinuvin 622 in polymers and obtaining its molecular weight distribution information simultaneously.
Article
Nanoscience & Nanotechnology
Guoxiong Dai, Xiaoqing Ai, Liqin Mei, Chunfeng Ma, Guangzhao Zhang
Summary: This study presents a novel approach to combat marine biofouling by developing a polymeric coating with integrated fouling killing, resistance, and releasing functions. The coating degrades at the surface/seawater interface, generating antifouling and zwitterionic groups for effective protection. The controllable degradation rate and synergistic antibacterial effects make this coating a promising solution to the challenge of marine biofouling.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Runze Chen, Yunsheng Zhang, Qingyi Xie, Zixin Chen, Chunfeng Ma, Guangzhao Zhang
Summary: The study presents a transparent water-borne antifouling coating with excellent fouling resistance and mechanical properties, suitable for applications in foldable displays, optical sensors, and biomedical facilities.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Applied
Xiaoqing Ai, Liqin Mei, Chunfeng Ma, Guangzhao Zhang
Summary: This study reports the synthesis of a hyperbranched polymer containing antifouling main-chains and degradable branching points through RAFT polymerization, offering a promising option for antifouling coatings. The branching degree of DHAP increases with the content of PCL segment, and QCM-D measurements show that the degradation of DHAP is controlled.
PROGRESS IN ORGANIC COATINGS
(2021)
Review
Chemistry, Multidisciplinary
Jiansen Pan, Xiaoqing Ai, Chunfeng Ma, Guangzhao Zhang
Summary: This article reviews the recent progress in degradable vinyl polymers for marine anti-biofouling, focusing on the strategies for preparing these polymers, the synthesis and performance of various types of degradable polymers, and their potential applications. Polymers with degradable main chains and hydrolyzable side groups combine the advantages of SPC and degradable polymers, making them promising materials for high-efficiency, long-lasting, environmentally friendly, and broad-spectrum coatings to inhibit marine biofouling.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Yunsheng Zhang, Zixin Chen, Hao Zheng, Runze Chen, Chunfeng Ma, Guangzhao Zhang
Summary: This study reports a highly cross-linked multifunctional coating with ceramic-like hardness and polymer-like flexibility. The coating, prepared via a step-by-step strategy, exhibits high transparency, hardness, flexibility, as well as excellent anti-biofouling and self-cleaning properties. These novel coatings can meet the needs of applications in foldable displays, marine industries, and other fields.
Article
Nanoscience & Nanotechnology
Pengli Zhang, Guoliang Zhang, Jiansen Pan, Chunfeng Ma, Guangzhao Zhang
Summary: In this study, a non-isocyanate polyurethane (NIPU) coating with ceramic-like hardness and polymer-like flexibility was prepared by the epoxy-oligosiloxane nanocluster-amine curing reaction and cyclic carbonate-amine polyaddition. The coating exhibited strong adhesion to various substrates and could be modified to have anti-icing, self-cleaning, and anti-smudge capabilities. This novel coating has great potential for applications in foldable devices and marine fields.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Man Wang, Qingyi Xie, Jiansen Pan, Chunfeng Ma, Guangzhao Zhang
Summary: In this study, a high-strength polyurea elastomer with impact resistance and antifouling function was prepared. It exhibits excellent mechanical strength and strain rate dependence, as well as good protein resistance and adhesion inhibition of microorganisms. The polyurea elastomers can also be combined with Kevlar fabric to form a composite with high puncture resistance force. They are expected to find applications in flexible wear protection, marine antifouling, and biomedical engineering.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Zhipeng Zhang, Lu Qian, Jianfeng Cheng, Qingyi Xie, Chunfeng Ma, Guangzhao Zhang
Summary: This study reports a novel strategy to fabricate one-component polyurea with room-temperature self-healing, puncture resistance, and impact resistance. The polyurea exhibits room-temperature self-healing properties with a healing efficiency of up to 98% and has high puncture displacement and excellent impact resistance. It can be integrated into Kevlar fabrics to form flexible puncture-resistant composites and combined with carbon nanotubes to form flexible and wearable strain sensors.
CHEMISTRY OF MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Zhenqiang Zhang, Qingyi Xie, Guoliang Zhang, Chunfeng Ma, Guangzhao Zhang
Summary: Researchers have developed a novel antifouling coating that exhibits both superior anti-adhesion ability and strong substrate adhesion, making it suitable for various applications. The coating is composed of bis-silane-terminated polyurea and a reactive amphiphilic polymer with fluorocarbon and poly(ethylene glycol) side chains. The coating demonstrates high transparency, high tensile strength, resistance to protein and bacterial fouling, and strong adhesion to various substrates.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jianfeng Cheng, Zhipeng Zhang, Ke Liu, Chunfeng Ma, Guangzhao Zhang
Summary: Inspired by the excellent energy absorption capability of cartilage structure, researchers have developed a dual-network impact-hardening gel with high malleability, self-healing properties, rate dependence, and toughness. The gel exhibits outstanding protective ability and can be combined with Kevlar fabric and foam to form a flexible anti-impact composite.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Zhipeng Zhang, Lu Qian, Guanyu Huang, Cong Chen, Jianfeng Cheng, Xiaohu Yao, Chunfeng Ma, Guangzhao Zhang
Summary: A novel strategy is proposed for the fabrication of mechanically tunable and healable polyurea by inserting urea moieties. The resulting polyurea exhibits significant improvements in strength, storage modulus, and toughness, and also demonstrates excellent self-healing, impact resistance, high transparency, and high dielectric constant. This work opens up new possibilities for the design and engineering of polyurea materials for flexible electronics and anti-impact applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Pengli Zhang, Bin Zhang, Jiansen Pan, Guoliang Zhang, Chunfeng Ma, Guangzhao Zhang
Summary: A solvent-free and highly cross-linked nonisocyanate polyurethane (NIPU) adhesive with ultrastrong adhesion performance and excellent tolerance to extreme conditions is reported. The adhesive exhibits high adhesion strength, versatility to different substrates, and is able to withstand low temperatures and organic solvents.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Man Wang, Chunfeng Ma, Guangzhao Zhang
Summary: This article introduces the profound effects of marine biofouling on marine industries and proposes a strategy of Dynamic Surface Antifouling (DSAF) to solve the problem. By continuously changing surfaces and developing degradable polymer-based marine antifouling materials, biofouling organisms landing and adhering can be effectively inhibited. The degradation of polymer chain enables the surface to be dynamic or self-renewing. The article reviews the development of dynamic surface antifouling materials.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Zhonglin Cao, Chunfeng Ma, Li Xiang, Linyan Cao
Summary: In this study, a biodegradable polyurethane material with anti-protein adsorption properties was synthesized. The material exhibited excellent nonspecific resistance to proteins and antibacterial adhesion, making it a potential candidate for medical antibacterial dressings.
Article
Polymer Science
Xiaoqing Ai, Jiansen Pan, Qingyi Xie, Chunfeng Ma, Guangzhao Zhang
Summary: A cleavable hyperbranched polymer with vinyl groups was developed for use in adhesives and coatings, exhibiting excellent antifouling properties. The polymer effectively inhibits the adhesion of proteins, marine bacteria, and diatoms, making it suitable for marine antifouling applications.
