Real-time absorption spectroelectrochemistry: From solution to monolayer

Alévêque, Olivier; Gautier, Christelle; Levillain, Eric

doi:10.1016/j.coelec.2019.03.015

Cited by 10 publications

(7 citation statements)

References 40 publications

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“…Details of the instrumentation can be found elsewhere. 21,22 In short, a threeelectrode cell with GC as the working electrode, Pt as the counter electrode, and Ag/AgNO 3 (0.01 M in 0.1 M TBAPF 6 ACN) as the reference electrode (identical to electrochemical grafting) was employed. The connection between the light source, the electrochemical cell, and the spectrophotometer was ensured through a "Yshaped" optical fiber bundle: 18 fibers to guide the light to the cell and 19 fibers to collect the reflected light from the cell directing it to the CDD detector (320−1080, 0.5 nm spectral resolution, and 2 MHz acquisition bandwidth).…”

Section: Methodsmentioning

confidence: 99%

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From Monolayer to Multilayer: Perylenediimide Diazonium Derivative Acting Either as a Growth Inhibitor or a Growth Enhancer

et al. 2021

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Fine control of electrografting kinetics of diazonium salts is of paramount importance, particularly when considering application of diazoniums for fabrication of 2D nanomaterials.In this work, we develop on controlled grafting of perylenediimide (PDI) moiety separated with a 12-carbon aliphatic chain from aryldiazonium. The particular design of the diazonium cation synthesized for this study allows fine-tuning of the surface coverage by simple adjustment of the applied potential. Indeed, according to the potential imposed at the working electrode, the PDI moiety can either enhance the charge propagation within the growing layer or consume the diazonium salt in the bulk solution via redox cross-reaction. With this approach, the surface functionalization can be restricted to a monolayer or a multilayer in a robust and elegant manner, obeying Langmuir or first-order kinetics of electrografting, respectively. The experimental observations are supported with in-situ spectroelectrochemical investigations aimed to differentiate reduction of PDI moieties in the deposited layer and the bulk solution.Tentative mechanistic scheme is proposed and numerical simulations are undertaken to rationalize the data.

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Section: Methodsmentioning

confidence: 99%

“…Details of the instrumentation can be found elsewhere. 21,22 In short, a 3-electrode cell with GC as working electrode, Pt as counter electrode and Ag/AgNO3 (0.01 M in 0.1 M TBAPF6 ACN) as reference electrode (identical to electrochemical grafting) were employed.…”

Section: Spectroelectrochemical Characterizationmentioning

confidence: 99%

From Monolayer to Multilayer: Perylenediimide Diazonium Derivative Acting Either as a Growth Inhibitor or a Growth Enhancer

et al. 2021

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“…This highly sensitive home-made measuring bench provides a new perspective to follow the grafting kinetic and get information on the organic layer structuration and its interactions with the supporting substrate. 32 Deposition conditions were varied on carbon and gold to extract new data about the layer structuration.…”

Section: Introductionmentioning

confidence: 99%

Real-time spectroelectrochemical monitoring of the diazonium electrografting

2022

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“…From this contemporary viewpoint, key concepts and selected contributions over the past 10 years are highlighted. The reader is referred to excellent reviews in the field including those on catalytic applications of MOFs, [28] SEC in the solution state, [29,30] and SEC of adsorbed molecular species relevant to surface-enhanced Raman scattering (SERS), as well as SEC of polymeric thin films for electronics and spintronics, [31] sol-gel films, [32] membranes, sensors, [26] self-assembled monolayers, [33] and even single molecules at an electrochemical interface. [34] In the field of MOF research, which is a focus herein, SEC techniques have received limited attention with only in situ powder X-ray diffraction (PXRD), [35,36] XAS, [37] UV-Vis-NIR, and EPR spectroscopy [38][39][40][41][42][43][44][45] measurements reported to date in the literature.…”

Section: Introductionmentioning

confidence: 99%

Spectroelectrochemistry: A Powerful Tool for Studying Fundamental Properties and Emerging Applications of Solid-State Materials Including Metal–Organic Frameworks

D’Alessandro¹,

Usov²

2021

Aust. J. Chem.

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Spectroelectrochemistry (SEC) encompasses a broad suite of electroanalytical techniques where electrochemistry is coupled with various spectroscopic methods. This powerful and versatile array of methods is characterised as in situ, where a fundamental property is measured in real time as the redox state is varied through an applied voltage. SEC has a long and rich history and has proved highly valuable for discerning mechanistic aspects of redox reactions that underpin the function of biological, chemical, and physical systems in the solid and solution states, as well as in thin films and even in single molecules. This perspective article highlights the state of the art in solid-state SEC (ultraviolet–visible–near-infrared, infrared, Raman, photoluminescence, electron paramagnetic resonance, and X-ray absorption spectroscopy) relevant to interrogating solid state materials, particularly those in the burgeoning field of metal–organic frameworks (MOFs). Emphasis is on developments in the field over the past 10 years and prospects for application of SEC techniques to probing fundamental aspects of MOFs and MOF-derived materials, along with their emerging applications in next-generation technologies for energy storage and transformation. Along with informing the already expert practitioner of SEC, this article provides some guidance for researchers interested in entering the field.

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Real-time absorption spectroelectrochemistry: From solution to monolayer

Abstract: The pioneering work of real-time absorption specroelectrochemistry: a must-read!

Cited by 10 publications

References 40 publications

From Monolayer to Multilayer: Perylenediimide Diazonium Derivative Acting Either as a Growth Inhibitor or a Growth Enhancer

From Monolayer to Multilayer: Perylenediimide Diazonium Derivative Acting Either as a Growth Inhibitor or a Growth Enhancer

Real-time spectroelectrochemical monitoring of the diazonium electrografting

Spectroelectrochemistry: A Powerful Tool for Studying Fundamental Properties and Emerging Applications of Solid-State Materials Including Metal–Organic Frameworks

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