Category:
  1. 13 Feb 2024 Journal Article Chemistry of Materials

    Building Semipermeable Films One Monomer at a Time: Structural Advantages via Molecular Layer Deposition vs Interfacial Polymerization

    Brian C Welch, Emma N Antonio, Thomas P Chaney, Olivia M McIntee, Joseph Strzalka, Victor M Bright, Alan R Greenberg, Tamar Segal-Peretz, Michael Toney, Steven M George
    Abstract

    Molecular layer deposition (MLD) provides the opportunity to perform condensation polymerization one vaporized monomer at a time for the creation of precise, selective nanofilms for desalination membranes. Here, we compare the structure, chemistry, and morphology of two types of commercial interfacial polymerzation (IP) membranes with lab-made MLD films. M-phenylenediamine

    show more
  2. 13 Feb 2024 Journal Article Chemistry of Materials

    Rational Design and Fabrication of Block Copolymer Templated Hafnium Oxide Nanostructures

    Abstract

    The ability to fabricate hafnium oxide (HfO2) nanostructures is central to the performance of computation devices, non-volatile memories, capacitors, biosensors, and optical devices. Sequential infiltration synthesis (SIS) has emerged in recent years as a new platform for nanostructure fabrication via the growth of inorganic materials within polymer templates using

    show more
  3. 7 Feb 2024 Journal Article ACS Applied Materials & Interfaces

    Facile Graphene Oxide Modification Method via Hydroxyl-yne Click Reaction for Ultrasensitive and Ultrawide Monitoring Pressure Sensors

    Zhipeng Hu, Wanlong Lu, Youbin Zheng, Jiamei Liu, Hossam Haick, Laju Bu
    Abstract

    Enhancing the durability and functionality of existing materials through sustainable pathways and appropriate structural design represents a time- and cost-effective strategy for the development of advanced wearable devices. Herein, a facile graphene oxide (GO) modification method via the hydroxyl-yne click reaction is present for the first time. By the click coupling

    show more
  4. 7 Feb 2024 Preprint ChemRxiv

    Towards Accurate Quantum Mechanical Thermochemistry: (1) Extensible Implementation and Comparison of Bond Additivity Corrections and Isodesmic Reactions

    Haoyang Wu, A Mark Payne, Hao-Wei Pang, Angiras Menon, Colin A Grambow, Duminda S Ranasinghe, Xiaorui Dong, Alon Grinberg Dana, William H Green
    Abstract

    Obtaining accurate enthalpies of formation of chemical species, Hf, often requires empirical corrections that connect the results of quantum mechanical (QM) calculations with the experimental enthalpies of elements in their standard state. One approach is to use atomization energy corrections (AECs) followed by bond additivity corrections (BACs), such as those defined

    show more
  5. 29 Jan 2024 Journal Article Chemistry – A European Journal

    Polymer Backbone Chemistry Shapes the Alkaline Stability of Metallopolymer Anion-Exchange Membranes

    Abstract

    Anion-exchange membrane fuel cells and water electrolyzers have garnered significant attention in past years due to their potential role in sustainable and affordable energy conversion and storage. However, the chemical stability of the polymeric anion-exchange membranes (AEMs), the key component in these devices, currently limits their lifespan. Recently, metallopolymers

    show more
  6. 15 Jan 2024 Journal Article Desalination

    Direct wind-powered vertical axis brackish water desalination system

    Abstract

    The supply of freshwater based on wind-powered desalination is technically feasible, but energetic losses associated with conventional systems necessitate new approaches. This study explores a direct wind-powered desalination (D-WPD) system using a small-scale vertical axis wind turbine (VAWT) for reverse osmosis via a high-pressure pump without electricity generation

    show more
  7. 15 Jan 2024 Journal Article Journal of Membrane Science

    How can we design anion-exchange membranes to achieve longer fuel cell lifetime?

    Abstract

    The substantial advancements and availability of new cost-effective materials have drawn significant attention to the anion-exchange membrane fuel cell (AEMFC) technology. The anion exchange membrane (AEM) is a core component in AEMFCs, essential for conducting hydroxide ions and controlling water transport between the fuel cell electrodes. In this study, we apply a

    show more
  8. 15 Jan 2024 Journal Article Journal of Membrane Science

    Analyzing ion uptake in ion-exchange membranes using ion association model

    Yoram Oren, Oded Nir, Viatcheslav Freger
    Abstract

    Predicting ion uptake and selectivity in ion-exchange membranes is desired for many applications, yet a suitable physical description defining the most appropriate ion-specific parameters is still challenging. Here, we systematically develop an ion-association-based approach to modeling ion uptake in ion-exchange membranes from solutions of symmetric and non-symmetric

    show more
  9. 12 Jan 2024 Journal Article Science Advances

    A 10-micrometer-thick nanomesh-reinforced gas-permeable hydrogel skin sensor for long-term electrophysiological monitoring

    Zongman Zhang, Jiawei Yang, Haoyang Wang, Chunya Wang, Yuheng Gu, Yumiao Xu, Sunghoon Lee, Tomoyuki Yokota, Hossam Haick, Takao Someya, Yan Wang
    Abstract

    Hydrogel-enabled skin bioelectronics that can continuously monitor health for extended periods is crucial for early disease detection and treatment. However, it is challenging to engineer ultrathin gas-permeable hydrogel sensors that can self-adhere to the human skin for long-term daily use (>1 week). Here, we present a ~10-micrometer-thick polyurethane nanomesh–reinforced

    show more
  10. 10 Jan 2024 Preprint Social Science Research Network

    Comparative Analysis of Konjac Glucomannan and Kappa Carrageenan Hydrogels: Classic Point-Like Junctions Network vs. Nanogel Junctions Network

    Abstract

    This paper presents a comparative analysis of two injectable and self-healing hydrogels, konjac glucomannan and kappa carrageenan, using hydrogen bonds as the cross-linking mechanism. The first hydrogel was a traditional point-like network, and the second hydrogel was a nanogel junctions network with a similar degree of stiffness. The point-like network exhibited greater

    show more