@misc{Mirsky, author = {Mirsky, Vladimir M.}, title = {Nanodetector: Ultrasensitive plasmonic detection of single nanoparticles}, series = {Compendium of Projects in the European Nanosafety Cluster}, volume = {2014}, journal = {Compendium of Projects in the European Nanosafety Cluster}, pages = {54 -- 59}, language = {en} } @misc{Mirsky, author = {Mirsky, Vladimir M.}, title = {Nanodetector: Ultrasensitive plasmonic detection of single nanoparticles}, series = {Compendium of Projects in the European Nanosafety Cluster}, volume = {2015}, journal = {Compendium of Projects in the European Nanosafety Cluster}, pages = {83 -- 89}, language = {en} } @incollection{NizamovMirsky, author = {Nizamov, Shavkat and Mirsky, Vladimir M.}, title = {Wide-field Surface Plasmon Resonance Microscopy for in-situ Characterization of Nanoparticle Suspensions}, series = {In-situ characterization techniques for nanomaterials}, booktitle = {In-situ characterization techniques for nanomaterials}, editor = {Kumar, Challa S. S. R.}, publisher = {Springer Verlag}, address = {Heidelberg}, isbn = {978-3-662-56322-9}, doi = {10.1007/978-3-662-56322-9}, pages = {61 -- 106}, language = {en} } @misc{LaroussiKotFlegeetal., author = {Laroussi, Arwa and Kot, Małgorzata and Flege, Jan Ingo and Raouafi, Noureddine and Mirsky, Vladimir M.}, title = {Self-assembled monolayers from symmetrical di-thiols: Preparation, characterization and application for the assembly of electrochemically active films}, series = {Applied Surface Science}, volume = {513}, journal = {Applied Surface Science}, issn = {0169-4332}, doi = {10.1016/j.apsusc.2020.145827}, abstract = {1,3-dimercaptopropan-2-ol, a symmetrical di-thiol, has been synthesized and applied as a new type of anchor molecule to prepare a self-assembled monolayer (SAM) on the gold surface. The formed monolayers were studied by cyclic voltammetry, impedance spectroscopy, X-ray photoelectron spectroscopy, kinetic capacitance, and contact angle measurements. The SAM structure depends on the adsorption conditions. A short incubation time of the electrode at high concentration of this di-thiol leads to the predominating binding through one thiol group of the adsorbate to the gold surface, while a long incubation at low concentration leads to the predominating binding by both thiol groups. A comparative study of the desorption and replacement of SAMs indicates a strong stability increase when the SAM molecules bond gold surface by two bonds mainly. This monolayer was used to immobilize electrochemically active p-benzoquinone moiety. The surface concentration of p-benzoquinone obtained from cyclic voltammetry is 2.5 ± 0.2 × 10-10 mol·cm-2 which corresponds to the functionalization of 65 ± 5\% of SAM molecules. The obtained highly stable SAM with redox-active terminal group can be applied for different tasks of chemical sensing and biosensing. As an example, an application of this system for electrocatalytical oxidation of dihydronicotinamide adenosine dinucleotide (NADH) was tested.}, language = {en} } @misc{Mirsky, author = {Mirsky, Vladimir M.}, title = {Electrochemical sensors between the academic world and harsh reality: a few thoughts on the past, present, and future}, series = {Journal of Solid State Electrochemistry}, volume = {24}, journal = {Journal of Solid State Electrochemistry}, number = {9}, issn = {1433-0768}, doi = {10.1007/s10008-020-04711-1}, pages = {2147 -- 2149}, language = {en} } @misc{EfremenkoMirsky, author = {Efremenko, Yulia and Mirsky, Vladimir M.}, title = {Poly-3-thienylboronic acid: a chemosensitive derivative of polythiophene}, series = {Journal of Solid State Electrochemistry}, volume = {24}, journal = {Journal of Solid State Electrochemistry}, number = {11-12}, issn = {1433-0768}, doi = {10.1007/s10008-020-04767-z}, pages = {3105 -- 3111}, abstract = {Poly-3-thiopheneboronic acid was synthesized by electrochemical polymerization from 3-thienylboronic acid dissolved in the mixture of boron trifluoride diethyl etherate and acetonitrile. Cyclic voltammetry during electropolymerization shows oxidative and reductive peaks growing in each next cycle. An investigation by scanning electron microscopy displayed the polymer layer like a highly flexible film of 110 nm thick with grains of 60-120 nm in size. Strong negative solvatochromic effect was observed. Optical spectra of poly-3-thienylboronic acid at different potentials and pH were studied. Potential cycling leads to a well reversible electrochromic effect. At pH 7.4, the increase of potential leads to the decrease in the absorption band at 480 nm and to the rise in the absorption band at 810 nm with an isosbestic point at 585 nm. Spectroelectrochemical behavior of poly-3-thienylboronic acid and polythiophene was compared. Binding of sorbitol at fixed electrode potential leads to an increase in the absorbance in the shortwave band and to the decrease in the longwave band; the effect depends on the electrode potential and pH. Perspectives of application of poly-3-thienylboronic acid as new chemosensitive material are discussed.}, language = {en} } @misc{SnopokLaroussiCafollaetal., author = {Snopok, Borys A. and Laroussi, Arwa and Cafolla, Clodomiro and Voitchovsky, Kislon and Snopok, Tetiana V. and Mirsky, Vladimir M.}, title = {Gold surface cleaning by etching polishing: Optimization of polycrystalline film topography and surface functionality for biosensing}, series = {Surfaces and Interfaces}, volume = {22}, journal = {Surfaces and Interfaces}, issn = {2468-0230}, doi = {10.1016/j.surfin.2020.100818}, pages = {11}, abstract = {Modern bio-chemical sensors rely on functional interfacial architectures with well-defined structural nano-motifs over a physical transducer. Gold-coated interfaces are of particular interest for their desirable chemical (functionalization) and optical (plasmonic) properties. Here we investigate the cleaning and polishing of polycrystalline gold films in preparation of advanced surface functionalization. We focus on soft wet chemical etching to decrease the small-scale roughness commonly observed after evaporation or sputtering of gold. We show that optimized surfaces are obtained by etching in solutions of hydrochloric acid and hydrogen peroxide. We systematically quantify the films wettability, surface nano-topography, UV-VIS spectrum and the electrochemical and Surface Plasmon Resonance (SPR) changes throughout the etching process. Optimal results are obtained by etching with a HCl(37\%):H2O2(30\%):H2O mixture, with a volume ratio of reagents 3:3:94 during 15-20 minutes at room temperature for the main step. This reduces by a factor two the root-mean-square roughness, removes contaminants, increases hydrophilicity and modifies the gold surface by Au(Cl)x complexes. Significantly, the resulting the surface is hydrophilic enough to prevent globular proteins such as HSA to unfold upon deposition at concentrations more than ~1 mg/mL. Our protocol offers a simple, reliable and rapid method for the preparation of gold surface in view of further functionalization including the binding of receptor layers and various micro- and nanostructures required in chemical and biochemical sensing.}, language = {en} } @misc{LaurinavichyuteNizamovMirsky, author = {Laurinavichyute, Veronika K. and Nizamov, Shavkat and Mirsky, Vladimir M.}, title = {Real time tracking of the early stage of electrochemical nucleation}, series = {Electrochimica Acta}, volume = {382}, journal = {Electrochimica Acta}, issn = {0013-4686}, doi = {10.1016/j.electacta.2021.138278}, pages = {8}, abstract = {An analysis of early stage of electrochemical nucleation is crucial in order to understand the mechanism of this process and for electrochemical synthesis of new materials. We show here an application of the wide field surface plasmon microscopy (WF-SPRM) for this purpose. It allows us in-situ monitoring of the growth of nuclei in the range from ~20 till over 1000 nm. The system registers the moment and the place of the formation of each individual nucleus for the total number of the tracked nuclei up to ~10,000 per 1 mm2. The results demonstrate that the integral information obtained from electrochemical measurements can be extracted quantitatively from optical measurements while optical data provide also information on the size of each individual nucleus, individual nucleation time, localization and growth kinetics, and allows one to distinguish the rate limiting stage for each individual nucleus. In this work WF-SPRM was applied for investigation of electrochemical deposition of copper on gold, but this technique can be extended easily to other materials or other nucleation types.}, language = {en} } @misc{LaroussiRaouafiMirsky, author = {Laroussi, Arwa and Raouafi, Noureddine and Mirsky, Vladimir M.}, title = {Electrocatalytic Sensor for Hydrogen Peroxide Based on Immobilized Benzoquinone}, series = {Electroanalysis}, volume = {33}, journal = {Electroanalysis}, number = {9}, issn = {1521-4109}, doi = {10.1002/elan.202100113}, pages = {2062 -- 2070}, abstract = {An amperometric chemosensor for the detection of hydrogen peroxide is reported. The sensor is based on 1,4-benzoquinone immobilized on the gold electrode using self-assembled monolayer of short chain symmetrical dithiol as an anchor layer. Sensor analysis was performed by cyclic voltammetry at the potential range from -0.6 V till +0.9 V as well as in the anodic or cathodic potential ranges only. The results indicate oxidative electrochemical decomposition of hydrogen peroxide at the potential of ∼+0.4 V leading to the formation of oxygen while at cathodic potentials a reduction of the formed oxygen as well as of the hydrogen peroxide occur. A decrease in the oxidation potential of hydrogen peroxide on the gold electrode coated by self-assembled monolayer with 1,4-benzoquinone in comparison with that measured on the electrodes coated by the same self-assembled monolayer without 1,4-benzoquinone, indicates electrocatalytic effect of this moiety on oxidative decomposition of hydrogen peroxide. Analytical evaluation of the sensor performance was done in the voltammetric as well as in the chronoamperometric mode. The sensor exhibited linear response over the concentration range till 2.5 mM with a limit of detection ∼4 μM.}, language = {en} } @misc{LaroussiKotFlegeetal., author = {Laroussi, Arwa and Kot, Małgorzata and Flege, Jan Ingo and Raouafi, Noureddine and Mirsky, Vladimir M.}, title = {Self-Assembled Monolayers from Symmetrical Di-Thiols: Preparation, Characterization and Application for the Assembly of Electrochemically Active Films}, series = {Engineering Proceedings}, volume = {6}, journal = {Engineering Proceedings}, number = {1}, issn = {2673-4591}, doi = {10.3390/I3S2021Dresden-10112}, abstract = {1,3-dimercaptopropan-2-ol, a symmetrical di-thiol, has been synthesized and applied as a new type of anchor molecule to prepare a self-assembled monolayer (SAM) on a gold surface. The formed monolayers were studied by cyclic voltammetry, impedance spectroscopy, X-ray photoelectron spectroscopy, kinetic capacitance, and contact angle measurements. The SAM structure depends on the adsorption conditions. A short incubation time of the electrode at high concentration of this di-thiol leads to the predominating binding through one thiol group of the adsorbate to the gold surface, while a long incubation at low concentration leads to the predominating binding by both thiol groups. A comparative study of the desorption and replacement of SAMs indicates a strong stability increase when the SAM molecules bond gold surfaces by two bonds mainly. This monolayer was used to immobilize electrochemically active p-benzoquinone moiety. The surface concentration of p-benzoquinone obtained from cyclic voltammetry is 2.5 ± 0.2 × 10-10 mol cm-2, which corresponds to the functionalization of 65 ± 5\% of SAM molecules. The obtained highly stable SAM with redox-active terminal group can be applied for different tasks of chemical sensing and biosensing. As an example, an application of this system for electrocatalytical oxidation of dihydronicotinamide adenosine dinucleotide (NADH) was tested.}, language = {en} }