Evgeny Katz
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View article: A thermosensitive α-amino acid hydrogel layer deposited on an electrode surface: Actuator and sensor performance
A thermosensitive α-amino acid hydrogel layer deposited on an electrode surface: Actuator and sensor performance Open
The aim of this work was the development of a novel stimuli-responsive hydrogel layer containing an acryloyl derivative of an α-amino acid and its electroanalytical characterization. The electroactive, electrosensitive, and thermosensitive…
View article: Electrochemically Produced pH Change Triggering Doxorubicin Release from Cystamine Cross‐Linked Microgels Covalently Immobilized on the Gold Interface
Electrochemically Produced pH Change Triggering Doxorubicin Release from Cystamine Cross‐Linked Microgels Covalently Immobilized on the Gold Interface Open
Herein, the usage of polyacrylic acid (AA) based and N,N′‐bis(acryloyl)cystamine (BAC) cross‐linked microgel (AA‐BAC) as a doxorubicin (DOX) carrier and stimuli‐responsive material for the controllable drug release is described. The carbox…
View article: Lanthanide‐Controlled Protein Switches: Development and <i>In Vitro</i> and <i>In Vivo</i> Applications
Lanthanide‐Controlled Protein Switches: Development and <i>In Vitro</i> and <i>In Vivo</i> Applications Open
Lanthanides, which are part of the rare earth elements group have numerous applications in electronics, medicine and energy storage. However, our ability to extract them is not meeting the rapidly increasing demand. The discovery of the ba…
View article: Lanthanide‐Controlled Protein Switches: Development and <i>In Vitro</i> and <i>In Vivo</i> Applications
Lanthanide‐Controlled Protein Switches: Development and <i>In Vitro</i> and <i>In Vivo</i> Applications Open
Lanthanides, which are part of the rare earth elements group have numerous applications in electronics, medicine and energy storage. However, our ability to extract them is not meeting the rapidly increasing demand. The discovery of the ba…
View article: Evaluation of front-of-pack labeling’s impact on unhealthy food consumption in Israeli households
Evaluation of front-of-pack labeling’s impact on unhealthy food consumption in Israeli households Open
Background In 2020, Israel introduced front-of-pack labeling (FOPL), marking unhealthy foods high in sugar/salt/saturated fat in red and Mediterranean diet-conforming foods in green, aiming to facilitate healthy choices through clear nutri…
View article: Enzymatically Triggered Drug Release from Microgels Controlled by Glucose Concentration
Enzymatically Triggered Drug Release from Microgels Controlled by Glucose Concentration Open
This study aims to design microgels for controlled drug release via enzymatically generated pH changes in the presence of glucose. Modern medicine is focused on developing smart delivery systems with controlled release capabilities. In res…
View article: Electrochemical Contributions: Svante August Arrhenius (1859–1927)
Electrochemical Contributions: Svante August Arrhenius (1859–1927) Open
Svante August Arrhenius (Figure 1) was a Swedish scientist, educated as a physicist, but mostly contributed to chemistry. He established a new scientific filed of physical chemistry. Although he was not the only founder of this novel area …
View article: Electrochemical contributions: Tatyana Aleksandrovna Kryukova (1906–1987)
Electrochemical contributions: Tatyana Aleksandrovna Kryukova (1906–1987) Open
Tatyana Alexandrovna Kryukova (Figure 1), a Russian scientist and electrochemist, made important contributions to electroanalytical chemistry (Figure 2), particularly working in close collaboration with Professor Aleksandr Naumovich Frumki…
View article: Electrochemical contributions: John Alfred Valentine Butler (1899–1977)
Electrochemical contributions: John Alfred Valentine Butler (1899–1977) Open
John Alfred Valentine Butler was the first to connect the kinetic electrochemistry built up in the second half of the twentieth century with the thermodynamic electrochemistry that dominated the first half. John Alfred Valentine Butler had…
View article: Electrochemical contributions: Ludwig Mond (1839−1909)
Electrochemical contributions: Ludwig Mond (1839−1909) Open
The general concept of fuel cells starts from the experiments of British physicist William Grove who published the first results on fuel cells in 1839.He used hydrogen and oxygen as a fuel and oxidizer, respectively, reacting on platinum c…
View article: Electrochemical contributions: Dionýz Ilkovič (1907–1980)
Electrochemical contributions: Dionýz Ilkovič (1907–1980) Open
Dionýz Ilkovič (Figure 1) was a Czechoslovak physicist and physical chemist. He made fundamental contributions to the theoretical background of polarography and electroanalytical chemistry in general. Polarography is the first electroanaly…
View article: Electrochemical contributions: Sir William Robert Grove (1811–1896)
Electrochemical contributions: Sir William Robert Grove (1811–1896) Open
William Robert Grove was a British scientist, who developed a “gas voltaic battery” which was the forerunner of modern fuel cells. Thus, Grove is known as the “Father of the Fuel Cell”. In his early study, Grove invented a novel electric c…
View article: Smartphone-Adapted Multianalyte Biosensor Platform for Fluorescent Analysis of Human Biomarkers and Immunosuppressive Drugs Using PQQ- and NAD+-Dependent Enzymes
Smartphone-Adapted Multianalyte Biosensor Platform for Fluorescent Analysis of Human Biomarkers and Immunosuppressive Drugs Using PQQ- and NAD+-Dependent Enzymes Open
Here, we describe a multianalyte biosensor platform for the fluorescent analysis of different human state biomarkers (α-amylase, phenylalanine, glucose, lactate/pyruvate, alcohol) and some immunosuppressive drugs (cyclosporine A, tac…
View article: Electrochemical contributions: Hans Wenking (1923–2007)
Electrochemical contributions: Hans Wenking (1923–2007) Open
Hans Wenking (Figure 1) was a German electrical engineer, physicist and inventor who devoted his lifetime to the development of electronic equipment for chemistry and physics, particularly constructing the first potentiostats, which became…
View article: Electrochemical contributions: William W. Jacques (1855–1932)
Electrochemical contributions: William W. Jacques (1855–1932) Open
William W. Jacques was an American electrical engineer and chemist who designed in 1896 a very unusual fuel cell operated on solid (coal) fuel named by him a “carbon battery”. While the majority of fuel cells utilize gas (usually H2) or li…
View article: Electrochemical contributions: John Edward Brough Randles (1912–1998)
Electrochemical contributions: John Edward Brough Randles (1912–1998) Open
Figure 1) was an English electrochemist who made important contributions to the theoretical background of polarography, cyclic voltammetry, and electrochemical impedance spectroscopy.Many modern techniques of electrochemistry are descended…
View article: Biosensors: Electrochemical Devices—General Concepts and Performance
Biosensors: Electrochemical Devices—General Concepts and Performance Open
This review provides a general overview of different biosensors, mostly concentrating on electrochemical analytical devices, while briefly explaining general approaches to various kinds of biosensors, their construction and performance. A …
View article: Biosensor Based on Peroxidase-Mimetic Nanozyme and Lactate Oxidase for Accurate L-Lactate Analysis in Beverages
Biosensor Based on Peroxidase-Mimetic Nanozyme and Lactate Oxidase for Accurate L-Lactate Analysis in Beverages Open
Precision analysis of the key biological metabolites such as L-lactate has great practical importance for many technological processes in food technology, including beverage production. Here we describe a new, highly selective, and sensiti…
View article: Cover Feature: A Universal Multichannel Platform for Assembling Enzyme‐Based Boolean Logic Gates (ChemPhysChem 20/2022)
Cover Feature: A Universal Multichannel Platform for Assembling Enzyme‐Based Boolean Logic Gates (ChemPhysChem 20/2022) Open
The Cover Feature illustrates a multichannel biosensing device with the optical output recorded and processed with a smartphone for performing logic operations. More information can be found in the Research Article by Yacob Melman, Evgeny …
View article: Electrochemical contributions: Adolph Wilhelm Hermann Kolbe (1818–1884)
Electrochemical contributions: Adolph Wilhelm Hermann Kolbe (1818–1884) Open
Hermann Kolbe (Figure 1) was a German scientist who greatly contributed to the development of organic chemistry, transforming it to the state as we know it now. Kolbe pioneered organic synthesis from inorganic sources and introduced the te…
View article: Electrochemical contributions: Rudolf Brdička (1906–1970)
Electrochemical contributions: Rudolf Brdička (1906–1970) Open
Rudolf Brdička (Figure 1) was a Czech physical chemist and electrochemist, particularly known for his research on biomedical applications of polarography. Brdička was a pupil and later a collaborator of Prof. Jaroslav Heyrovský (the invent…
View article: Electrochemical contributions: Julius Tafel (1862–1918)
Electrochemical contributions: Julius Tafel (1862–1918) Open
Julius Tafel (Figure 1) was a Swiss chemist and electrochemist. Tafel started his scientific career working on the field of organic chemistry with Hermann Emil Fischer, but soon changed his interests to electrochemistry after his work with…
View article: Electrochemical contributions: Gustav Theodor Fechner (1801–1887)
Electrochemical contributions: Gustav Theodor Fechner (1801–1887) Open
Gustav Theodor Fechner (Figure 1) was a German physicist, psychologist, and philosopher. His scientific contributions were mostly in the area of experimental psychology. He was a founder of psychophysics and he is particularly credited for…
View article: “Smart” alginate hydrogels in biosensing, bioactuation and biocomputing: State-of-the-art and perspectives
“Smart” alginate hydrogels in biosensing, bioactuation and biocomputing: State-of-the-art and perspectives Open
In addressing the demand for biocompatible wearable, implantable and injectable biomedical devices, alginate hydrogels stand out as promising candidates. Alginate hydrogels have been used as matrix for immobilization of proteins, responsiv…
View article: Iron(<scp>iii</scp>)-cross-linked alginate hydrogels: a critical review
Iron(<span>iii</span>)-cross-linked alginate hydrogels: a critical review Open
Preparation, characterization and applications, particularly for signal-stimulated molecule release, of Fe 3+ -cross-linked alginate hydrogels are critically overviewed.
View article: Design of a methotrexate-controlled chemical dimerization system and its use in bio-electronic devices
Design of a methotrexate-controlled chemical dimerization system and its use in bio-electronic devices Open
Natural evolution produced polypeptides that selectively recognize chemical entities and their polymers, ranging from ions to proteins and nucleic acids. Such selective interactions serve as entry points to biological signaling and metabol…
View article: Photo-stimulated self-powered electrochemical system for DNA release
Photo-stimulated self-powered electrochemical system for DNA release Open
The DNA-release activated by light in the self-powered bioelectronic system has been studied. The system was composed of two connected electrodes: one photo-active electrode was modified with photosynthetic thylakoid membranes and another …