25 papers · ranked by Valyu relevance
Ivana Škugor Rončević, Denis Krivić, Maša Buljac, Nives Vladislavić + 1 more
The development of sensing coatings, as important sensor elements that integrate functionality, simplicity, chemical stability, and physical stability, has been shown to play a major role in electrochemical sensing system development trends. Simple and versatile assembling procedures and scalability make…
Gulmi Chakraborty, Ajaya Bhattarai, Ranjit De, Asterios (Stergios) Pispas
'Asterios (Stergios) Pispas'] Polyelectrolytes are polymers with repeating units of ionizable groups coupled with counterions. Recently, polyelectrolytes have drawn significant attention as highly promising macromolecular materials with potential for applications in almost every sector of our daily lives. Dyes are…
Dawid Stawski
Poly(N,N-dimethylaminoethyl methacrylate) is a polyelectrolyte with many important chemical and physical properties and, above all, offers a wide range of interesting biological properties. Currently, research on this polymer is ongoing in several centres around the world. The process of polymerizing the monomer is not…
Daria Nikolaeva, Patricia Luis, Alberto Figoli, Francesco Galiano
Polymer-based CO2 selective membranes offer an energy efficient method to separate CO2 from flue gas. ‘Top-down’ polyelectrolytes represent a particularly interesting class of polymer materials based on their vast synthetic flexibility, tuneable interaction with gas molecules, ease of processability into thin films…
Mike J. Edwards
By means of the density functional theory framework (DFT) as well as the molecular dynamic simulations (MD), a polyelectrolyte chain (PE) in the good solvent conditions at thermal equilibrium is studied. The strength of the electrostatic interactions is varied by the Bjerrum length of the solvent. It turns out that…
Anja Traeger, Meike N. Leiske
Polyelectrolytes offer unique properties for biological applications due to their charged nature and high water solubility. Here, the challenges in their synthesis and characterization techniques are reviewed, emphasizing that their strong interactions with the surrounding media and counterions must be considered when…
Sarkyt E. Kudaibergenov, Nurxat Nuraje
At present, a large amount of research from experimental and theoretical points of view has been done on interpolyelectrolyte complexes formed by electrostatic attractive forces and/or interpolymer complexes stabilized by hydrogen bonds. By contrast, relatively less attention has been given to polymer-polymer complex…
Debarshee Bagchi, Trung Dac Nguyen, Mónica Olvera de la Cruz
Polyelectrolytes under confinement are crucial for energy storage and for understanding biomolecular functions. Using molecular dynamics simulations, we analyze a polyelectrolyte solution confined between two oppositely charged planar dielectric surfaces and include surface polarization effects due to dielectric…
Authors not listed
We use coarse-grained simulations to study the impact of charge regulation on the complexation of a weak polyacid and a strong polycation. Comparing an isolated polyacid with the polyelectrolyte pair, we demonstrate that charge regulation leads to a significant enhancement of the ionization. Furthermore, our…
Prasanta Kundu, Arti Dua
Light scattering and viscometric measurements on weak polyelectrolytes show two important aspects of counterion condensation, namely, non-monotonic variation in the polyelectrolyte size with the increase in the electrostatic strength, and, monovalent counterion selectivity in determining the nature of collapse…
Roman Staňo, Jéré van Lente, Saskia Lindhoud, Peter Košovan
Mixing of oppositely charged polyelectrolytes can result in phase separation into a polymer-poor supernatant and polymer-rich interpolyelectrolyte complex (PEC). We present a new coarse-grained model for the Grand-reaction method, which enables us to determine the composition of the coexisting phases in a broad range…
Fang Yan, Artem M. Rumyantsev, Angelika E. Neitzel, Heyi Liang + 4 more
'William T. Heller' 'Paul F. Nealey' 'Matthew V. Tirrel' 'Juan Pablo'] Polyelectrolyte complexation plays an important role in materials science and biology. The internal structure of the resultant polyelectrolyte complex (PEC) phase dictates properties such as physical state, response to external stimuli, and…
Prabhat Tripathi, Byoung-jin Jeon, Murugappan Muthukumar
We have investigated how a pair of oppositely charged macromolecules can be driven by an electric field to form a polyelectrolyte complex inside a nanopore. To observe and isolate an individual complex pair, a model protein nanopore, embedded in artificial phospholipid membrane, allowing compartmentalization…
Yuki Uematsu, Takeaki Araki
We investigate electro-osmosis in aqueous solutions of polyelectrolytes using mean-field equations. A solution of positively charged polyelectrolytes is confined between two negatively charged planar surfaces, and an electric field is applied parallel to the surfaces. When electrostatic attraction between the polymer…
Authors not listed
Polymer-induced liquid precursors are hydrated, metastable, amorphous droplets rich in insoluble ionic compounds; they form in aqueous solutions that are supersaturated with mineral ions in the presence of charged polymers that delay the onset of crystal nucleation. This work reports that rapid crystallization of a…
Albert Wong, Aliye Koyuncu, Giulia Allegri, Taghi Moazzenzade + 2 more
Biochemical communication is ubiquitous in life. The efficient means by which biology use feedback mechanisms to dynamically regulate concentrations myriad signaling molecules have inspired chemists to design chemical reaction networks (CRNs). Strategies to encode, transmit, and process information in CRNs, however, is…
Deepak Sharma, Sudhriti Roy, Milan Kumar Hazra
Heterotypic biomolecular condensates underpin the spatiotemporal organization of cellular components and enable precise biological regulation. These condensates frequently comprise proteins and RNA at variable stoichiometries, with RNA acting as a key modulator through its ability to engage in both long-range…
Authors not listed
Elastic modulus, G, and equilibrium swelling ratio, Q, are two properties of hydrogels, which are linked by the scaling law G ∼ Q^β, where β=-1 and -9/4 in the low and high salt limit, respectively. Tuning them independently would enable the optimization of the material design for a wide variety of distinct…
Muzaffar Rafique, Aykut Erbas
Polyelectrolyte gels can generate electric potentials under mechanical deformation. While the underlying mechanism of such response is often attributed to the changes in counterion-condensation levels or alterations in the ionic conditions in the pervaded volume of the hydrogel, exact molecular origins are still…
Yi Hui Zhao, Murugappan Muthukumar, Di Jia
Polyampholyte gel is a perfect physics model to mimic condensed state of proteins. We have studied the hierarchical dynamics of polyampholyte gels by dynamic light scattering. In addition to the normal gel mode, which indicates the gel elasticity, we also discovered a new mode with a stretched exponential decay with…
Yadiel Varela Soler, William Xu, Mariana R.N. Lima, Jessica McDonald + 5 more
Nearly 80% of cystic fibrosis patients are affected by persistent lung infections, with Pseudomonas aeruginosa being one of the major culprits. Treatment of P. aeruginosa is further complicated by its ability to form biofilms. Anionic compounds within the biofilm and thick cystic fibrosis mucus interact with cationic…
Gabriel J. Rodriguez-Rivera, Fei Xu, Madeline Laude, Vani Shah + 5 more
Conductive hydrogels have gained interest in biomedical applications and soft electronics. To tackle the challenge of ionic hydrogels falling short of desired mechanical properties in previous studies, our investigation aimed to understand the pivotal structural factors that impact the conductivity and mechanical…
Xinyue Zhang, Jinyue Dai, Max Tepermeister, Jingjie Yeo + 1 more
Ionically conductive polymers are commonly made of monomers containing high polarity moieties to promote high ion dissociation, like poly(ethylene oxide) (PEO), polyvinylidene difluoride (PVDF), poly(vinyl alcohol) (PVA). However, the glass transition temperature ($T_g$) of these polymers are relatively high, and…
Anil Arya, A. L. Sharma
In this review, latest updates in the poly (ethylene oxide) based electrolytes are summarized. The ultimate goal of researchers globally is towards the development of free standing solid polymeric separator for energy storage devices. This single free standing solid polymeric separator may replace the liquid and…
Davide Moia, Alexander Giovannitti, Anna A. Szumska, Martin Schnurr + 5 more
'Elham Rezasoltani' 'Iuliana P. Maria' 'Piers R. F. Barnes' 'Iain McCulloch' 'Jenny Nelson'] We report a neutral salt water based battery which uses p-type and n-type solution processed polymer films as the cathode and the anode of the cell. The specific capacity of the electrodes (approximately 30 mAh cm-3 ) is…