Photoinduced Self-assembly of Carboxylic Acid- Terminated Lamellar Silsesquioxane: Highly Functional Films for Attaching and Patterning Amino-Based Ligands - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue RSC Advances Année : 2015

Photoinduced Self-assembly of Carboxylic Acid- Terminated Lamellar Silsesquioxane: Highly Functional Films for Attaching and Patterning Amino-Based Ligands

Résumé

Recently, long n-alkyltrimethoxysilanes (H3C(CH2)nSi(OCH3)3) have proven to self-assemble into mesoscopically ordered passive lamellar films through an efficien t solvent-free photoacid-catalysed sol-gel process. By using an analogue precursor architecture presenting terminal ester group (H3COC(O)(CH2)10Si(OCH3)3), both functional and tuneable nanostructured organosilica films were synthesized, while keeping all processing advantages of light-induced self-assembly. The subsequent attachment of a fluorescent amino-based ligand (Safranin O) was performed using a two-step procedure. The ester end groups were first hydrolysed in reactive carboxylic using standard methods, and activated with an amino ligand to form amide bonds. Hydr olysis and ligand coupling were assessed through infrared and solid-state 1 H NMR spectroscopy. Direct patterning of the fluorescent ligand-functionalized silsesquioxane film was performed by exposure to deep UV under a mask to cause the local degradation o f the dye. The resultant photopatterned film was detected using fluorescence microscopy. This UV method could represent an effective and general approach for attaching and patterning amino-based ligands, with less restriction on substrate and surface preparation than self-assembled monolayers.

Domaines

Polymères
Fichier principal
Vignette du fichier
Estersilane_v10 (1).pdf (1012.04 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02539016 , version 1 (15-04-2020)

Identifiants

Citer

Lingli Ni, Abraham Chemtob, Céline Croutxe-Barghorn, Céline Dietlin, Jocelyne Brendlé, et al.. Photoinduced Self-assembly of Carboxylic Acid- Terminated Lamellar Silsesquioxane: Highly Functional Films for Attaching and Patterning Amino-Based Ligands. RSC Advances, 2015, 5, pp.45703-45709. ⟨10.1039/C5RA04300J⟩. ⟨hal-02539016⟩
28 Consultations
53 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More