Quantitative aspects of infrared external reflection spectroscopy:  polymer/glassy carbon interface

Porter, Marc D.; Bright, Thomas B.; Allara, David L.; Kuwana, Theodore

doi:10.1021/ac00125a023

Cited by 60 publications

(46 citation statements)

References 28 publications

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“…Coupling between vibrational modes and surface plasmon resonance when working with rough surfaces or nanoparticulate deposits can result in bipolar or anti-absorbance bands [113][114][115][116][117][118][119] (i. e., bands in which excitation of a vibrational mode results in an increase, instead of a decrease, of the reflectance of the surface). These bands have often been called abnormal, [120] despite being perfectly predictable by Fresnel's reflection laws.…”

Section: The Shape and Intensity Of Adsorbate Bandsmentioning

confidence: 99%

In‐Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO₂: Theory, Practice and Challenges

et al. 2019

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The field of electrochemical CO2 conversion is undergoing significant growth in terms of the number of publications and worldwide research groups involved. Despite improvements of the catalytic performance, the complex reaction mechanisms and solution chemistry of CO2 have resulted in a considerable amount of discrepancies between theoretical and experimental studies. A clear identification of the reaction mechanism and the catalytic sites are of key importance in order to allow for a qualitative breakthrough and, from an experimental perspective, calls for the use of in‐situ or operando spectroscopic techniques. In‐situ infrared spectroscopy can provide information on the nature of intermediate species and products in real time and, in some cases, with relatively high time resolution. In this contribution, we review key theoretical aspects of infrared reflection spectroscopy, followed by considerations of practical implementation. Finally, recent applications to the electrocatalytic reduction of CO2 are reviewed, including challenges associated with the detection of reaction intermediates.

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Section: The Shape and Intensity Of Adsorbate Bandsmentioning

confidence: 99%

In‐Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO₂: Theory, Practice and Challenges

et al. 2019

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“…Despite the fact that material that fulfill the surface selection rule of IRRAS are limited to metal such as Au, Pt, Ag or Cu [21] nonmetallic substrates such as glassy carbon [101] and even glass [102] have been succesfully applied in IRRAS. However, due to a low enhancement of the electric field vector of the -polarized light at these nonmetallic surfaces they are rarly applied for structural studies of monomolecular films of biomolecules.…”

Section: The Electrode (Mirror) Surfacementioning

confidence: 99%

Application of Polarization Modulation Infrared Reflection Absorption Spectrosocpy Under Electrochemical Control for Structural Studies of Biomimetic Assemblies

Brand

2015

Zeitschrift Für Physikalische Chemie

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An ideal bioanalytical method would allow carrying out sensitive, selective, reproducible, fast, and in situ chemical measurements of the composition, structure and function of complex biological systems. Physical chemistry possesses advanced structure analyzing techniques which are suitable to solve, at a sub-molecular level, the structure of biomolecules. However, the prerequisite of the presence of the electrolyte solution limits the number of applicable structure analyzing techniques. Infrared spectroscopy is one of the most powerful analytical techniques used to identify the structure of biomolecules, monitor structural changes under various experimental environments and physical states. In addition, infrared reflection absorption spectroscopy (IRRAS) has been successfully applied to study supramolecular films at the solid|liquid interface. Assemblies of biomolecules belong to a particularly demanding because they bring specific for the maintenance of their functions experimental requirements which have to be taken into account planning in situ spectroelectrochemical experiments. In this paper potnential of in situ IRRAS under electrochemical control for studies of structural changes in assemblies of biomolecules such as lipid bilayers and protein films is described. Studies of different classes of biomolecules bring certain experimetnal conditions concerning the electrolyte composition, pH value, temperature or chemical nature of the solid support, which have to be fulfilled. Obviously, these conditons may significantly restrict the applicability of the in situ PM IRRAS. The selection of the solid substrate with required optical and electrical properties, the optical window and the electrolyte composition have to be adapted to the needs of biomolecules. Adjustement of experimetnal conditions as well as possibilites of the enlargement of the in situ PM IRRAS for studies of biomimetic assemblies is reviewed in this paper. Furthermore, experimetnal resutls reporting potenial driven changes in models of cell membranes and protein films are reviewed. Pioneering studies aiminig at the determination of structural changes in lipid membranes exposed to physiological electric fields and interacting simultaneously with protiens are described.

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“…Although the reflection coefficient is completely defined by equations 1 using an appropriate complex refractive index, it is not a particularly intuitive representation in that it does not directly relate the observed reflectivity to the concentration of a species in the sample. A common concept in ATR spectroscopy is to define an effective depth, eff , by analogy with the cell thickness, , in the Beer-Lambert law = log 10 0 = (10) where is the absorbance, the extinction coefficient and the concentration of the sample. So, for ATR spectroscopy, is not an exact match for these substances).…”

mentioning

confidence: 99%

Total internal reflection spectroscopy for studying soft matter

Woods

Bain

2014

Soft Matter

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Total internal reflection (TIR) spectroscopy is a widely used technique to study soft matter at interfaces. This tutorial review aims to provide researchers with an overview of the principles, experimental design and applications of TIR spectroscopy to enable them to understand how this class of techniques might be used in their research. It also highlights limitations and pitfalls of TIR techniques, which will assist readers in critically analysing the literature. Techniques covered include attenuated total reflection infrared spectroscopy (ATR-IR), TIR fluorescence, TIR Raman scattering and cavity-enhanced techniques. Other related techniques are briefly described.

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Quantitative aspects of infrared external reflection spectroscopy: polymer/glassy carbon interface

Cited by 60 publications

References 28 publications

In‐Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO₂: Theory, Practice and Challenges

In‐Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO₂: Theory, Practice and Challenges

Application of Polarization Modulation Infrared Reflection Absorption Spectrosocpy Under Electrochemical Control for Structural Studies of Biomimetic Assemblies

Total internal reflection spectroscopy for studying soft matter

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Quantitative aspects of infrared external reflection spectroscopy: polymer/glassy carbon interface

Cited by 60 publications

References 28 publications

In‐Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO2: Theory, Practice and Challenges

In‐Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO2: Theory, Practice and Challenges

Application of Polarization Modulation Infrared Reflection Absorption Spectrosocpy Under Electrochemical Control for Structural Studies of Biomimetic Assemblies

Total internal reflection spectroscopy for studying soft matter

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Product

Resources

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In‐Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO₂: Theory, Practice and Challenges

In‐Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO₂: Theory, Practice and Challenges