Title :

Prominence of the instability of a stabilizing agent in the changes in physical state of a hybrid nanomaterial

Author(s) :

Kahn, Myrtil L. [Auteur]
Spataro, Gregory [Auteur]
Champouret, Yohan [Auteur]
Coppel, Yannick [Auteur]

Journal title :

Chemphyschem . a European journal of chemical physics and physical chemistry

Abbreviated title :

Chemphyschem

Publication date :

2020-09-07

ISSN :

1439-7641

Keyword(s) :

surface chemistry
hybrid materials
nanoparticles
NMR spectroscopy
properties

HAL domain(s) :

Chimie/Chimie de coordination

English abstract : [en]

Shaping ability of hybrid nanomaterials is a key point for their further use in devices. It is therefore crucial to control it. To this end, it is necessary that the macroscopic properties of the material remain constant ...
Show more >Shaping ability of hybrid nanomaterials is a key point for their further use in devices. It is therefore crucial to control it. To this end, it is necessary that the macroscopic properties of the material remain constant over time. Here, we evidence by multinuclear Magic-Angle Spinning Nuclear Magnetic Resonance spectroscopic study including 17 O isotope exchange that for a ZnO-alkylamine hybrid material, the partial carbonation of amine into ammonium carbamate molecules is behind the conversion from highly viscous liquid to a powdery solid when exposed to air. This carbonation induces modification and reorganization of the organic shell around the nanocrystals and affects significantly the macroscopic properties of the material such as it physical state, its solubility and colloidal stability. This study, straightforwardly extendable, highlights that the nature of the functional chemical group allowing connecting the stabilizing agent (SA) to the surface of the nanoparticles is of tremendous importance especially if the SA is reactive with molecules present in the environment.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille

Collections :

• Autres travaux scientifiques

Submission date :

2022-03-02T07:15:02Z
2024-01-15T16:10:46Z