Q3681388 (Q3681388): Difference between revisions
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(Created claim: summary (P836): A key route to obtaining innovative and efficient compounds is a combination of complementary approaches and techniques; the reflection concerns both the choice of the material and the methods of synthesis (in solution, in gentle chemistry of the electrochemical or chemical insertion type, by precipitation) and of crystallisation or the modes of characterisation. It is essential to control the preparation conditions in order to control compositi...) |
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A key route to obtaining innovative and efficient compounds is a combination of complementary approaches and techniques; the reflection concerns both the choice of the material and the methods of synthesis (in solution, in gentle chemistry of the electrochemical or chemical insertion type, by precipitation) and of crystallisation or the modes of characterisation. It is essential to control the preparation conditions in order to control composition and purity, the (micro)structure (stresses, morphologies and particle size distributions), the crystal structure (especially in the case of chiral compounds) and defects. For the materials we study, phase transitions (structural and magnetic transitions) play a predominant role on the properties of materials.In this framework, X-ray diffraction (DRX) appears to be the tool of choice as well as measurements of second harmonic generation (SHG) or frequency doubler, for crystallising compounds in a non-centrosymmetric space group. The aim is to use these techniques to follow live lasynthesis, crystallisation pathways, aging, changes in operating conditions, etc., without taking samples, so as not to disturb the system under study. This project was born from already existing collaborations (formalised or not) between these teams because of their common scientific interests. Its strength is also based on their international recognition: SMS(Rouen) for its mastery of the crystallisation of molecular compounds, CRISMAT (Caen) for lasynthesis and physicochemical characterisations of multifunctional oxides and LCS (Caen) with the development of porous materials (zeoliths).We are therefore convinced that we have brought together all the conditions conducive to the success of this project, to create and characterise new innovative materials thanks to in situ and operando studies of theirsynthesis and their reactivity. It is also a question of understanding the pathways of crystallisation (or desynthesis) of materials by highlighting transient states that can only be observed by operando techniques sensitive to the crystallinity of the matter. More precisely, we would like to develop the In-situX® prototype (the subject of a WO 2012/136921 patent filing and trademark),for the monitoring of crystallisation processes in solution, to extend to low and high temperatures the SHG device of the SMS and to acquire an environmental diffractometer for the CRISMAT dedicated to the monitoring of structural evolutions under controlled atmospheres, from -260 to + 900 °C, with possible application of electric current and gas pressure. (English) | |||||||||||||||
Property / summary: A key route to obtaining innovative and efficient compounds is a combination of complementary approaches and techniques; the reflection concerns both the choice of the material and the methods of synthesis (in solution, in gentle chemistry of the electrochemical or chemical insertion type, by precipitation) and of crystallisation or the modes of characterisation. It is essential to control the preparation conditions in order to control composition and purity, the (micro)structure (stresses, morphologies and particle size distributions), the crystal structure (especially in the case of chiral compounds) and defects. For the materials we study, phase transitions (structural and magnetic transitions) play a predominant role on the properties of materials.In this framework, X-ray diffraction (DRX) appears to be the tool of choice as well as measurements of second harmonic generation (SHG) or frequency doubler, for crystallising compounds in a non-centrosymmetric space group. The aim is to use these techniques to follow live lasynthesis, crystallisation pathways, aging, changes in operating conditions, etc., without taking samples, so as not to disturb the system under study. This project was born from already existing collaborations (formalised or not) between these teams because of their common scientific interests. Its strength is also based on their international recognition: SMS(Rouen) for its mastery of the crystallisation of molecular compounds, CRISMAT (Caen) for lasynthesis and physicochemical characterisations of multifunctional oxides and LCS (Caen) with the development of porous materials (zeoliths).We are therefore convinced that we have brought together all the conditions conducive to the success of this project, to create and characterise new innovative materials thanks to in situ and operando studies of theirsynthesis and their reactivity. It is also a question of understanding the pathways of crystallisation (or desynthesis) of materials by highlighting transient states that can only be observed by operando techniques sensitive to the crystallinity of the matter. More precisely, we would like to develop the In-situX® prototype (the subject of a WO 2012/136921 patent filing and trademark),for the monitoring of crystallisation processes in solution, to extend to low and high temperatures the SHG device of the SMS and to acquire an environmental diffractometer for the CRISMAT dedicated to the monitoring of structural evolutions under controlled atmospheres, from -260 to + 900 °C, with possible application of electric current and gas pressure. (English) / rank | |||||||||||||||
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Property / summary: A key route to obtaining innovative and efficient compounds is a combination of complementary approaches and techniques; the reflection concerns both the choice of the material and the methods of synthesis (in solution, in gentle chemistry of the electrochemical or chemical insertion type, by precipitation) and of crystallisation or the modes of characterisation. It is essential to control the preparation conditions in order to control composition and purity, the (micro)structure (stresses, morphologies and particle size distributions), the crystal structure (especially in the case of chiral compounds) and defects. For the materials we study, phase transitions (structural and magnetic transitions) play a predominant role on the properties of materials.In this framework, X-ray diffraction (DRX) appears to be the tool of choice as well as measurements of second harmonic generation (SHG) or frequency doubler, for crystallising compounds in a non-centrosymmetric space group. The aim is to use these techniques to follow live lasynthesis, crystallisation pathways, aging, changes in operating conditions, etc., without taking samples, so as not to disturb the system under study. This project was born from already existing collaborations (formalised or not) between these teams because of their common scientific interests. Its strength is also based on their international recognition: SMS(Rouen) for its mastery of the crystallisation of molecular compounds, CRISMAT (Caen) for lasynthesis and physicochemical characterisations of multifunctional oxides and LCS (Caen) with the development of porous materials (zeoliths).We are therefore convinced that we have brought together all the conditions conducive to the success of this project, to create and characterise new innovative materials thanks to in situ and operando studies of theirsynthesis and their reactivity. It is also a question of understanding the pathways of crystallisation (or desynthesis) of materials by highlighting transient states that can only be observed by operando techniques sensitive to the crystallinity of the matter. More precisely, we would like to develop the In-situX® prototype (the subject of a WO 2012/136921 patent filing and trademark),for the monitoring of crystallisation processes in solution, to extend to low and high temperatures the SHG device of the SMS and to acquire an environmental diffractometer for the CRISMAT dedicated to the monitoring of structural evolutions under controlled atmospheres, from -260 to + 900 °C, with possible application of electric current and gas pressure. (English) / qualifier | |||||||||||||||
point in time: 18 November 2021
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Revision as of 16:50, 18 November 2021
Project Q3681388 in France
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English | No label defined |
Project Q3681388 in France |
Statements
161,000.00 Euro
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322,000.0 Euro
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50.0 percent
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30 September 2021
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UNIVERSITE DE ROUEN-NORMANDIE
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76821
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Une voie incontournable pour obtenir des composés innovants et efficaces passe par une combinaisond'approches et de techniques complémentaires ; la réflexion concerne aussi bien le choix du matériau queles méthodes de synthèse (en solution, en chimie douce de type insertion électrochimique ou chimique, parprécipitation) et de cristallisation ou les modes de caractérisations. Il est indispensable de maitriser lesconditions de préparation de façon à contrôler la composition et la pureté, la (micro)structure (contraintes,morphologies et répartitions granulométriques), la structure cristalline (en particulier dans le cas decomposés chiraux) et les défauts. Pour les matériaux que nous étudions, les transitions de phase(transitions structurales et magnétiques) jouent un rôle prépondérant sur les propriétés des matériaux.Dans ce cadre, la diffraction des rayons X (DRX) apparait comme l'outil de choix ainsi que les mesures degénération de seconde harmonique (SHG) ou doubleur de fréquence, pour les composés cristallisant dansun groupe d'espace non-centrosymétrique. Il s'agit d'utiliser ces techniques pour suivre en direct lasynthèse, les chemins de cristallisation, le vieillissement, les évolutions en conditions de fonctionnement,etc., sans faire de prélèvements, pour ne pas perturber le système en cours l'étude. Il s'agit donc decaractérisations dites in situ ou operando (en condition de fonctionnement).Ce projet est né de collaborations déjà existantes (formalisées ou non) entre ces équipes du fait de leursintérêts scientifiques communs. Sa force repose aussi sur leur reconnaissance internationale: SMS(Rouen) pour sa maîtrise de la cristallisation de composés moléculaires, CRISMAT (Caen) pour lasynthèse et les caractérisations physico-chimiques d'oxydes multifonctionnels et LCS (Caen) avec ledéveloppement de matériaux poreux (zéolithes).Nous sommes donc convaincus d'avoir réuni toutes les conditions favorables au succès de ce projet, pourcréer et caractériser de nouveaux matériaux innovants grâce aux études in situ et operando de leurssynthèses et de leurs réactivités. Il s'agit également de comprendre les chemins de cristallisation (ou desynthèse) des matériaux en mettant en évidence des états transitoires qui ne peuvent être observés quepar des techniques operando sensibles à la cristallinité de la matière. De façon plus précise, noussouhaitons faire évoluer le prototype In-situX® (objet d'un dépôt de brevet WO 2012/136921 et de marque),pour le suivi des processus de cristallisation en solution, élargir vers les basses et hautes températures ledispositif SHG du SMS et acquérir un diffractomètre environnemental pour le CRISMAT dédié au suivi desévolutions structurales sous atmosphères contrôlées, de -260 à +900°C, avec application possible decourant électrique et de pression de gaz. (French)
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A key route to obtaining innovative and efficient compounds is a combination of complementary approaches and techniques; the reflection concerns both the choice of the material and the methods of synthesis (in solution, in gentle chemistry of the electrochemical or chemical insertion type, by precipitation) and of crystallisation or the modes of characterisation. It is essential to control the preparation conditions in order to control composition and purity, the (micro)structure (stresses, morphologies and particle size distributions), the crystal structure (especially in the case of chiral compounds) and defects. For the materials we study, phase transitions (structural and magnetic transitions) play a predominant role on the properties of materials.In this framework, X-ray diffraction (DRX) appears to be the tool of choice as well as measurements of second harmonic generation (SHG) or frequency doubler, for crystallising compounds in a non-centrosymmetric space group. The aim is to use these techniques to follow live lasynthesis, crystallisation pathways, aging, changes in operating conditions, etc., without taking samples, so as not to disturb the system under study. This project was born from already existing collaborations (formalised or not) between these teams because of their common scientific interests. Its strength is also based on their international recognition: SMS(Rouen) for its mastery of the crystallisation of molecular compounds, CRISMAT (Caen) for lasynthesis and physicochemical characterisations of multifunctional oxides and LCS (Caen) with the development of porous materials (zeoliths).We are therefore convinced that we have brought together all the conditions conducive to the success of this project, to create and characterise new innovative materials thanks to in situ and operando studies of theirsynthesis and their reactivity. It is also a question of understanding the pathways of crystallisation (or desynthesis) of materials by highlighting transient states that can only be observed by operando techniques sensitive to the crystallinity of the matter. More precisely, we would like to develop the In-situX® prototype (the subject of a WO 2012/136921 patent filing and trademark),for the monitoring of crystallisation processes in solution, to extend to low and high temperatures the SHG device of the SMS and to acquire an environmental diffractometer for the CRISMAT dedicated to the monitoring of structural evolutions under controlled atmospheres, from -260 to + 900 °C, with possible application of electric current and gas pressure. (English)
18 November 2021
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Identifiers
18P02469
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