2017
DOI: 10.1002/celc.201701000
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Individual Detection and Characterization of Non‐Electrocatalytic, Redox‐Inactive Particles in Solution by using Electrochemistry

Abstract: The fundamentals and recent examples of applications of electrochemical techniques to study individual entities in solution are overviewed. Specifically, strategies that enable rapid and simple investigation of redox‐inactive and non‐catalytic particles are highlighted, broadening the range of entities that can be examined and, therefore, the value and capabilities of electrochemistry in the field.

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Cited by 22 publications
(19 citation statements)
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“…[35][36][37][38][39][40][41] Especially, the electrochemical detection of single liposome collisions at UMEs is becoming an efficient and complementary tool for analyzing fundamental biological processes related to intracellular and extracellular electron transfers to discrete biological or artificial entities. [42][43][44] To explore the factors influencing the vesicles membrane permeability, we investigated the electrochemical and electrocatalytic reaction of different aqueous redox species (potassium ferrocyanide and cobalt(II) nitrate) encapsulated inside synthetic DMPC (1,2dimyristoyl-sn-glycero-3-phosphocholine) liposomes subjected to different experimental conditions (addition of surfactant, increase of temperature or presence of a redox probe in solution), by single collision detection on 10 μm diameter UMEs (Pt and carbon) as illustrated in Figure 1. We discuss the effect of the solution temperature on the liposome collision, its membrane rupture, and subsequent electrolysis of its redox content.…”
Section: /19mentioning
confidence: 99%
“…[35][36][37][38][39][40][41] Especially, the electrochemical detection of single liposome collisions at UMEs is becoming an efficient and complementary tool for analyzing fundamental biological processes related to intracellular and extracellular electron transfers to discrete biological or artificial entities. [42][43][44] To explore the factors influencing the vesicles membrane permeability, we investigated the electrochemical and electrocatalytic reaction of different aqueous redox species (potassium ferrocyanide and cobalt(II) nitrate) encapsulated inside synthetic DMPC (1,2dimyristoyl-sn-glycero-3-phosphocholine) liposomes subjected to different experimental conditions (addition of surfactant, increase of temperature or presence of a redox probe in solution), by single collision detection on 10 μm diameter UMEs (Pt and carbon) as illustrated in Figure 1. We discuss the effect of the solution temperature on the liposome collision, its membrane rupture, and subsequent electrolysis of its redox content.…”
Section: /19mentioning
confidence: 99%
“…Electro-analytical chemistry deeply evolved with the emergence of single entity electrochemistry [1][2][3][4][5]. This game-changing approach opened the area of digital electrochemistry where one target at a time is being detected and analyzed.…”
Section: Introductionmentioning
confidence: 99%
“…Depending on the nature of the particle and the information sought, several strategies of detection (and their combination) may be used. Insulating particles like polystyrene beads, oxides, or bacteria may be detected by labeling with a redox active particle/molecule or detected by electrochemical blocking [4]. In the present review, we will focus on the most recent progress in the field of in-situ electrochemical detection of insulating particles by techniques based on electrochemical blocking.…”
Section: Introductionmentioning
confidence: 99%
“…Stochastic collision enables the detection of a wide variety of individual entities such as metal nanoparticles [1,2], emulsion droplets [3,4], vesicle [5,6], micelles [7], proteins [8] and bacteria [9]. Depending on the nature of the entity (insulator, conductor, redox-active material), various electrochemical detection schemes can be used [10]. Insulating objects can be detected by "electrochemical blocking".…”
Section: Introductionmentioning
confidence: 99%