Article
Chemistry, Multidisciplinary
Shuyi Sun, Chenxia Xie, Jie Chen, Yang Yang, Hui Li, Thomas P. Russell, Shaowei Shi
Summary: Charge transfer interactions are commonly used in constructing supramolecular systems, but the formation of CT complexes at the liquid-liquid interface has not been reported until now. By utilizing electron-deficient acceptors in water and electron-rich donors in oil, CT complex surfactants can be formed and assembled at the oil-water interface, ultimately leading to the creation of higher-order nanofilms with exceptional mechanical properties. The redox-responsiveness of the electron-deficient acceptor allows for reversible manipulation of the assembly and disassembly of CTCSs, offering the potential for switchable structures in liquids.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Chemistry, Multidisciplinary
Nikunjkumar R. Visaveliya, Johann Michael Koehler
Summary: Hierarchical assembly architectures of functional polymer particles are promising due to their physicochemical and surface properties, and various assembly structures can be constructed by adjusting the surface, cross-linked network, and interfacial agents of polymer nanoparticles for controlled interfacial interactions. Microfluidic-mediated platform is used to synthesize polymer nanoparticles with different structural and interfacial properties, followed by assembly under batch or flow conditions.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Polymer Science
Mohsen Ghasemi, Ronald G. Larson
Summary: This study investigates the charge regulation of weakly dissociating polyacids through potentiometric titration, revealing the significant impact of electrostatic correlations on the ionization constant of acid groups along the polyacid chain. By using a random phase approximation model, the shift of the ionization constant can be predicted, mainly attributed to the electrostatic repulsions along the polyacid chain.
PROGRESS IN POLYMER SCIENCE
(2021)
Review
Chemistry, Multidisciplinary
Jia-Rui Wu, Gengxin Wu, Dongxia Li, Ying-Wei Yang
Summary: Synthetic macrocycles have played a significant role in supramolecular chemistry, expanding the scope of organic charge transfer complexes and demonstrating practical value in the solid state. This MiniReview summarizes the research progress on macrocycle-based crystalline supramolecular assemblies driven by intermolecular charge transfer interactions (MCCAs). The assemblies are classified based on their donor-acceptor constituent elements, including simplex macrocyclic hosts, heterogeneous macrocyclic hosts, and host-guest D-A pairs. The diverse functions, applications, and underlying charge transfer mechanisms are discussed from the perspective of crystal engineering. The remaining challenges and prospects are also outlined.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Mohamad Danial Shafiq, Franceska Waggett, Nur Liyana Marissa Ismail, Paul Bartlett
Summary: Controllable micrometer-range electrostatic interactions in a suspension were achieved using charge control additives AOT and TDAT in non-aqueous solvents. The AOT system modified particle surface charge by adsorption of micelles, while the electrolytic TDAT system altered the screening length of the solution. Studies revealed that at high TDAT concentrations, classical theory is no longer valid.
COLLOID AND POLYMER SCIENCE
(2021)
Article
Mechanics
Chandra Shekhar, Vishwajeet Mehandia, Manigandan Sabapathy
Summary: This study presents a simple method for preparing water-in-water-in-water particle-stabilized double emulsions. It involves the use of oppositely charged nanoparticles in two fluid phases, promoting self-assembly and aggregate formation. The proposed method offers a one-step synthesis process, enabling easy preparation and exhibiting excellent stability for at least 30 days.
Article
Physics, Multidisciplinary
O. M. Gradov
Summary: The study focuses on the generation of electrostatic fields and plasma surface curvatures when an electromagnetic beam is incident on a cold plasma with immobile ions. By transforming the initial equations and boundary conditions, parameters for self-focusing of electrostatic surface waves in the plasma are determined. Potential curvatures of the plasma surface are examined for their potential to cause self-focusing of external radiation after reflection from the boundary in the medium surrounding the plasma.
Article
Chemistry, Multidisciplinary
Qiangqiang Sun, Xuanming Hu, Boran Xu, Shiji Lin, Xu Deng, Shaobing Zhou
Summary: This study reports a method of manipulating droplet motion and functionalization using an invisible charge wall. The invisible charge wall can trap droplets and polarize them into charged states. Furthermore, the enrichment of proteins and nanomaterials in the manipulated charged droplets is demonstrated. This strategy provides a potential microfluidic platform with orthogonal functionalities.
Article
Nanoscience & Nanotechnology
Lin Wang, Penghe Qiu, Yan Li, Ningyun Zhou, Mingying Yang, Chuanbin Mao
Summary: Researchers achieved efficient and controlled assembly of nanoparticles onto unmodified protein-based bionanofibers by engineering the surface chemistry of the nanoparticles. Coating nanoparticles with low-molecular-weight polyethyleneimine (PEI) led to dense loading on the bionanofibers, while high-molecular-weight PEI resulted in low-density assembly. This universal and facile approach allows for assembling nanoparticles of various compositions onto different wild-type bionanofibers without the need for case-specific surface engineering of the biotemplates.
ACS APPLIED NANO MATERIALS
(2022)
Article
Pharmacology & Pharmacy
Courtney van Ballegooie, Alice Man, Alessia Pallaoro, Marcel Bally, Byron D. Gates, Donald T. Yapp
Summary: In this study, a novel drug-delivery system utilizing external beam radiation for triggered release was developed. Zein protein and gold particles were used to create nanoparticles, with gold particles leading to significant alterations to the protein structure and promoting the release of encapsulated drugs.
Article
Chemistry, Physical
Maximilian Wagner, Franziska Groehn
Summary: A facile method for synthesizing tunable core-shell CdS-ZnxMn1-xS nanoparticles with adjustable optical properties and optimized catalytic activity has been described. The results reveal that the shell composition is a crucial factor in optimizing the catalytic activity.
Article
Chemistry, Physical
S. Zhou
Summary: By combining classical density functional theory with modified interfacial statistical associating fluid theory, this study investigates the novel properties of surface electrostatic force (SEF) induced by dimer counter-ions. The results show that the SEF exhibits different attractive and repulsive features under varying conditions.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Energy & Fuels
Hongjing Wang, Tongqing Zhou, Kai Deng, Wenjing Tian, Hongjie Yu, You Xu, Xiaonian Li, Ziqiang Wang, Liang Wang
Summary: The design of active and durable cathodic electrocatalysts is critical for fuel cell applications. In this study, tungsten-palladium bimetallic hydrides with a porous nanosheet assembly structure (WPd-H NSAs) were synthesized as high-performance oxygen reduction reaction (ORR) electrocatalysts. The introduction of hydrogen atoms and curved porous nanosheet structures led to weaker oxygen binding energy on palladium, resulting in superior ORR activity compared to traditional platinum-based catalysts.
Article
Chemistry, Physical
Celine Jegat, Edouard Rollin, Ludovic Douillard, Olivier Soppera, Keitaro Nakatani, Guillaume Laurent
Summary: The article presents a new method for patterning assemblies of gold nanorods on substrates and a study on the near-field coupling induced by the aggregation of the nanoparticles. By investigating single, dimer, and elongated aggregates of the nanorods, the study shows different types of near-field coupling efficiency depending on the incident light polarization, interparticle gaps, and angles between the nanorods. Hot spots of the near-field are associated with the interparticle gap regions.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Multidisciplinary Sciences
Jiho Kang, Stephanie A. Valenzuela, Emily Y. Lin, Manuel N. Dominguez, Zachary M. Sherman, Thomas M. Truskett, Eric Anslyn, Delia J. Milliron
Summary: By using a metal coordination linkage, the bonding of nanocrystal gels can be quantified in situ, allowing for the establishment of their structure and thermodynamic bases. The color change based on this linkage enables the development of switchable gels and provides new insights for the rational design of programmable nanocrystal networks.
Article
Biochemical Research Methods
Christian Leiterer, Erik Wuensche, Prabha Singh, Jens Albert, Johann M. Koehler, Volker Deckert, Wolfgang Fritzsche
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2016)
Article
Engineering, Environmental
Matthias Thiele, Joanne Zi En Soh, Andrea Knauer, Daniell Malsch, Ondrej Stranik, Robert Mueller, Andrea Csaki, Thomas Henkel, J. Michael Koehler, Wolfgang Fritzsche
CHEMICAL ENGINEERING JOURNAL
(2016)
Article
Polymer Science
Nikunjkumar Visaveliya, Andrea Knauer, Wei Yu, Christophe A. Serra, J. Michael Koehler
EUROPEAN POLYMER JOURNAL
(2016)
Article
Chemistry, Physical
Nikos G. Tsierkezos, Max Puschner, Uwe Ritter, Andrea Knauer, Lars Hafermann, J. Michael Koehler
Article
Chemistry, Applied
Claudia Lenk, Carlos Mattea, Siegfried Stapf, J. Michael Koheler
JOURNAL OF POROUS MATERIALS
(2017)
Article
Polymer Science
Nikunjkumar Visaveliya, Andrea Knauer, Johann Michael Koehler
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2017)
Article
Biotechnology & Applied Microbiology
Jialan Cao, Lars Hafermann, J. Michael Koehler
ENGINEERING IN LIFE SCIENCES
(2017)
Article
Biochemical Research Methods
Matthias Thiele, Andrea Knauer, Daniell Malsch, Andrea Csaki, Thomas Henkel, J. Michael Koehler, Wolfgang Fritzsche
Article
Polymer Science
Nikunjkumar R. Visaveliya, Xiang Li, Andrea Knauer, Bhagavatula L. V. Prasad, Johann Michael Kohler
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2017)
Review
Chemistry, Multidisciplinary
Nikunjkumar R. Visaveliya, Christopher W. Leishman, Kara Ng, Nicolas Yehya, Nelson Tobar, Dorthe M. Eisele, Johann Michael Kohler
ADVANCED MATERIALS INTERFACES
(2017)
Article
Environmental Sciences
Johann Michael Koehler, Franziska Kalensee, Peter Mike Guenther, Tim Schueler, Jialan Cao
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH
(2018)
Article
Nanoscience & Nanotechnology
J. Michael Koehler, Danja Kuhfuss, Phillip Witthoeft, Martina Hentschel, Andrea Knauer
JOURNAL OF NANOMATERIALS
(2018)
Article
Chemistry, Multidisciplinary
Johann Michael Koehler, Andrea Knauer
APPLIED SCIENCES-BASEL
(2018)
Article
Nanoscience & Nanotechnology
Xiang Li, Nikunjkumar R. Visaveliya, Lars Hafermann, Andrea Knauer, Steffen Schneider, J. Michael Koehler
ACS APPLIED NANO MATERIALS
(2018)
Article
Engineering, Environmental
Xiang Li, Nikunjkumar Visaveliya, Lars Hafermann, G. Alexander Gross, Andrea Knauer, J. Michael Koehler
CHEMICAL ENGINEERING JOURNAL
(2017)