Article
Polymer Science
Si Shen, Tingting Jia, Jing Jia, Ning Wang, Di Song, Jing Zhao, Jin Jin, Quantong Che
Summary: The proton exchange membranes (PEMs) constructed through alternate depositing chitosan and graphene oxide show improved proton conductivity and mechanical properties in high temperature proton exchange membrane fuel cells (HTPEMFCs). Doped phosphoric acid molecules enhance membrane's mechanical strength, while layer-by-layer deposited composite membranes exhibit excellent proton conductivity and stability. The strategy of alternate depositing functional components on membrane substrates proves to be more effective at enhancing the quality of PEMs.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Ekaterina V. V. Kukhtenko, Filipp V. V. Lavrentev, Vladimir V. V. Shilovskikh, Polina I. I. Zyrianova, Semyon I. I. Koltsov, Artemii S. S. Ivanov, Alexander S. S. Novikov, Anton A. A. Muravev, Konstantin G. G. Nikolaev, Daria V. V. Andreeva, Ekaterina V. V. Skorb
Summary: In this paper, a novel approach to the on-demand periodic formation of polyelectrolyte complexes through a Liesegang-type hierarchical organization was developed. The proposed methodology allows for the self-assembly and self-healing of membranes after exposure to external stimuli, such as potential difference and high pH. The resulting periodically self-assembled polyelectrolyte nanomembranes could find applications in energy storage devices and intelligent biocompatible membranes.
Article
Chemistry, Physical
Yingfa Liu, Zhongxiang Bai, Guo Lin, Yunqing Xia, Lifen Tong, Tianrui Li, Chenchen Liu, Shuning Liu, Kun Jia, Xiaobo Liu
Summary: This study presents a composite nanofiltration membrane fabricated through layer-by-layer self-assembly, which utilizes interfacial interactions to manipulate the surface structures, wettability, and pore morphology of the membrane. The optimized membrane exhibits excellent dye removal and stable separation performance, providing new strategies for the fabrication of water purification membranes.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Shuang Yu, Jin Xiao Li, Guang Zeng, Yong Heng Xing, Feng Ying Bai, Zhan Shi
Summary: A family of fluorescent Ln-HCPCP frameworks were synthesized using a flexible functionalized cyclotriphosphazene hexacarboxylic acid. The compounds exhibit 3D structures and show multifunctional fluorescence sensing properties. Additionally, Dye@La-HCPCP composites were prepared through solvothermal reaction and cation exchanges.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Jotiram N. Malegaonkar, Mahmood D. Aljabri, Keerti Bhamidipati, Sachin D. Padghan, Mohammad Al Kobaisi, Rajesh S. Bhosale, Nagaprasad Puvvada, Sidhanath Bhosale, Sheshanath Bhosale
Summary: The supramolecular self-assembly of OPVPDA bolaamphiphile in different pH conditions was investigated. Various techniques were used to study the aggregation mode in solution and characterize the nanostructures formed. The results showed that pH had a significant effect on the self-assembly of OPVPDA, and different morphologies of OPVPDA could potentially be used in the development of biomaterials. Furthermore, OPVPDE exhibited better biocompatibility compared to OPVPDA.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Polymer Science
Qimin Jiang, Liang Zhao, Yongzhuang Du, Wenyan Huang, Xiaoqiang Xue, Hongjun Yang, Li Jiang, Qilin Jiang, Bibiao Jiang
Summary: This study describes the one-pot synthesis of novel thermoresponsive nonconjugated fluorescent branched poly(ether amide)s and characterizes their structure and properties through a series of analysis methods. The results show that these polymers have a lower critical solution temperature and exhibit LCST-dependent fluorescent behavior within a specific temperature range. Moreover, these polymers demonstrate good biocompatibility and bright cell imaging capabilities.
Article
Nanoscience & Nanotechnology
Yulia Eygeris, Qiaoyi Wang, Marion Gorke, Michael Grunwald, Ilya Zharov
Summary: This study introduces a novel family of tunable nanoporous membranes based on nanoparticles decorated with temperature-responsive polymer brushes. Mechanically robust membranes were prepared from hairy nanoparticles carrying PNIPAM polymer brushes. The permeability and filtration cutoff of these membranes were measured at different temperatures. Molecular dynamics computer simulations provided insights into the temperature-dependent pore sizes and polymer configurations responsible for the observed filtration membrane permeability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Chemical
Saqib Javed, Isam H. Aljundi
Summary: This study utilized response surface methodology to investigate the effect of polyelectrolyte multilayer films on the permeation and rejection properties of thin-film composite membranes. The findings suggest that under saline feed conditions, higher permeate flux is favored by higher pH and PEI concentration, while salt rejection benefits from similar concentrations of both polyelectrolytes. Optimization results indicated that both polyelectrolytes should be used at their maximum concentration with 50 bilayers and a pH of 7.8 for best performance.
DESALINATION AND WATER TREATMENT
(2021)
Article
Biochemistry & Molecular Biology
Le Xu, Xi Liu, Jiao Jia, Hao Wu, Juan Xie, Yongtang Jia
Summary: Accurate and sensitive pH sensing and monitoring in the environment are crucial for human health. Nanomaterials and nanotechnology combined with fluorescent materials provide excellent opportunities for developing high-performance sensing membranes and monitoring pH effectively. In this study, fluorescent nanofiber membranes (NFMs) containing poly-1,8-naphthimide derivative-3-[dimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]azaniumyl]propane-1-sulfonate (PNI-SBMA) were fabricated by electrospinning. The NFMs showed outstanding hydrophilicity due to surfactant-like functionalities in the side chains of PNI-SBMA, and the naphthimide derivatives exhibited sensitivity to pH through the photoinduced electron transfer effect, enabling efficient pH fluorescence sensing applications of the NFMs. Among the NFMs, the PNI-SBMA/PVA NFM with a ratio of 1:9 (NFM2) demonstrated high sensitivity and good cyclability to pH.
Article
Chemistry, Multidisciplinary
Veronika Kozlovskaya, Maksim Dolmat, Eugenia Kharlampieva
Summary: This article highlights the recent advances in assembly technologies, fundamentals, and applications of multilayer hydrogels. It discusses the relationships between synthetic strategies, chemical compositions, and hydrogel architectures, and their effects on stimuli-induced volume changes, morphology, and mechanical responses. The article also presents potential applications of pH- and temperature-sensitive multilayer hydrogels in sensing and drug delivery.
Article
Chemistry, Physical
Qiao Liu, Shuhuan Zhang, Lin Tian, Junmin Li, Wenli Ma, Fanghui Wang, Zhiqian Wang, Jing Li, Hong Zhu
Summary: To improve ion transport capacity and chemical stability, a windmill shaped branched poly(aryl piperidine) basic membrane with controlled polyelectrolyte structure is designed and prepared. The membrane incorporates pendant cyclic ammonium and polar 2-(2-chloroethoxy) ethanol to form highly ordered interconnected ion network domains, facilitating ion and water transport. The presence of terminal hydroxyl groups in the membrane enables dynamic non-covalent crosslinking effects, enhancing membrane toughness and facilitating the fabrication of ultrathin self-supported membranes with reduced ohmic resistance.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Analytical
Sopan Nangare, Pravin Patil
Summary: The study aimed to develop a simple, label-free, fast, highly sensitive, and selective 2D carbon backbone graphene oxide (GO) patterned surface plasmon resonance (SPR) mediated affinity biosensor for Tau-441 monitoring in Alzheimer's disease (AD) diagnosis. The fabricated GO@LbL-AuNPs-Anti-Tau SPR biosensor showed a broad concentration range and a very low detection limit, exhibiting remarkable sensitivity and great selectivity for Tau-441 in the presence of interfering molecules. It also demonstrated high stability, repeatability, and practicality in spiked sample analysis and AD-induced animal samples analysis, suggesting it as a potential alternative for AD diagnosis in the future.
ANALYTICA CHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Kun Liu, Shengyue Tang, Wenyan Li, Wei Wen, Shan Ding, Mingxian Liu, Hong Li, Changren Zhou, Binghong Luo
Summary: A strategy of layer-by-layer (LBL) electrostatic self-assembly using positively charged chitin whiskers and negatively charged maleated chitin whiskers was successfully employed to enhance and biofunctionalize PDLLA membrane. The incorporation of polydopamine as an intermediate layer significantly improved the stability and adhesion of the chitin whisker layers on the substrate. Moreover, adjusting the number of self-assembly whisker layers allowed for highly enhanced and controllable mechanical properties of the membranes.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Biochemistry & Molecular Biology
Sabuj Chandra Sutradhar, Sujin Yoon, Taewook Ryu, Lei Jin, Wei Zhang, Whangi Kim, Hohyoun Jang
Summary: The branched sulfonimide-based poly(phenylenebenzophenone) (SI-branched PPBP) membranes exhibit excellent proton conductivity and thermal-chemical stability, with unique dimensional stability and distinct microphase separation between hydrophobic and hydrophilic moieties. Their properties suggest the viability of SI-branched PPBP membranes as alternative materials for proton exchange membranes.
Article
Chemistry, Multidisciplinary
Jie Wang, Zongchun Gao, Xianhua Jin, Donglin Fang, Jin Xu, Xuerong Fan
Summary: This paper investigates the self-assembly properties and aggregation behavior of amphiphilic water-dispersed polyester (WPET) with different sulfonate group contents. The effects of WPET concentration, temperature, and electrolytes on the aggregation behavior are systematically studied. The results show that high sulfonate group content leads to higher stability, while low sulfonate group content makes the dispersion sensitive to electrolytes. WPET concentration, temperature, and electrolytes play important roles in controlling the self-assembly and aggregation of WPET molecules.
Article
Multidisciplinary Sciences
Tuan D. Tran, Aenia Amin, Keith G. Jones, Ellen M. Sheffer, Lidia Ortega, Keith Dolman
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2017)
Article
Neurosciences
Katherine G. Warthen, Benjamin Sanford, Kendal Walker, Keith G. Jones, Mike Angstadt, Chandra Sripada, David Goldman, Jon-Kar Zubieta, Robert C. Welsh, Margit Burmeister, Brian J. Mickey
NEUROPSYCHOPHARMACOLOGY
(2019)
Article
Clinical Neurology
J. B. King, K. G. Jones, E. Goldberg, M. Rollins, K. MacNamee, C. Moffit, S. R. Naidu, M. A. Ferguson, E. Garcia-Leavitt, J. Amaro, K. R. Breitenbach, J. M. Watson, R. K. Gurgel, J. S. Anderson, N. L. Foster
JPAD-JOURNAL OF PREVENTION OF ALZHEIMERS DISEASE
(2019)
