0000000000450682
AUTHOR
Claude P Gros
Covalent Organic Frameworks for the detection of CO
International audience; Every year in the world, carbon monoxide (CO) is responsible for thousands of intoxications and hundreds of deaths. The detection (CO) at few ppm levels is thus a critical point for the control of the air quality. Corrole belongs to the family of porphyrinoids which is largely used for sensing applications [1]. We have shown that cobalt metallocorroles are able to bind carbon monoxide in the axial position with a high affinity even in the presence of nitrogen and dioxygen, the two main components of the atmosphere [2]. We have recently prepared sensing devices for low CO detection level (sub-ppm) using cobalt corroles deposited as films on a Surface Acoustic Wave dev…
SAW based CO2 sensor: influence of functionalizing MOF crystal size on the sensor's selectivity
International audience; The potential impact of indoor air quality on human health has become an increasingly important topic of public health and, thus, has stimulated an interest in hazardous compounds survey such as carbon dioxide. To address this issue, we started the development of a Surface Acoustic Wave device functionalized with metal-organic framework for the selective detection of carbon dioxide. Here, we propose preliminary results on the influence of the size of the metal-organic framework crystals on the sensor’s selectivity and on its evolution with the ageing of the sensor
Electrochemistry of Mono- and Bis-CN Ligated Cobalt Corroles
International audience; The electrochemical properties of numerous transition metal corroles have been examined under a variety of<br>solution condition with special emphasis being placed on the innocent or non-innocent nature of the corrole<br>macrocycle. This property, as well as the half-wave potentials and sites of electron transfers, are known to be<br>strongly influenced by the type of central metal ion and degree of axial coordination, namely 4, 5 or 6-coordinate.<br>The redox potentials of metallocorroles are also dependent upon the solvent and inductive, resonance or steric<br>effects dictated by peripheral substituents at the meso or β-pyrrole positions of the corrole li…
Porous Organic Polymers (POPs) based on cobalt corroles for the detection of carbon monoxide
International audience; Detection of carbon monoxide (CO) at few ppm levels is a critical point for quality control of domestic and<br>industrial environment. CO is responsible for thousands of intoxications and hundreds of deaths per year in the<br>world. Moreover, CO is a residual gas found in the industrial dihydrogen used for Proton Exchange Membrane<br>fuel cell, and deactivates the fuel cell prematurely. Corroles have been largely used in sensing applications.[1]<br>Cobalt corroles display high binding affinity for carbon monoxide even in the presence of nitrogen and<br>dioxygen.[2] The affinity of the Co(III) metallocorroles for CO is directly correlated with the Lewis acid…