A density functional theory (PBE functional) investigation is carried out, in which a model of an amorphous silica surface is functionalized by ortho-benzoquinone. Surface functionalization with catechol and quinone-based compounds is relevant in biomedical fields, from prosthetic implants to dentistry, to develop multifunctional coatings with antimicrobial properties. The present study provides atomistic information on the specific interactions between the functionalizing agent and the silanol groups at the silica surface. The distinct configurations of the functional groups, the hydrogen bond pattern, the role of dispersion forces and the simulated IR spectra provide detailed insight into the features of this model surface coating. Ab initio molecular dynamics gives further insights into the mobility of the functionalizing groups. As a final step, we studied the condensation reaction with allylamine, via Schiff base formation, to ground subsequent simulations on condensation with model peptides of antimicrobial activity.

Models for biomedical interfaces: a computational study of quinone-functionalized amorphous silica surface features

CORNO, MARTA;Delle Piane, Massimo;UGLIENGO, Piero
2017-01-01

Abstract

A density functional theory (PBE functional) investigation is carried out, in which a model of an amorphous silica surface is functionalized by ortho-benzoquinone. Surface functionalization with catechol and quinone-based compounds is relevant in biomedical fields, from prosthetic implants to dentistry, to develop multifunctional coatings with antimicrobial properties. The present study provides atomistic information on the specific interactions between the functionalizing agent and the silanol groups at the silica surface. The distinct configurations of the functional groups, the hydrogen bond pattern, the role of dispersion forces and the simulated IR spectra provide detailed insight into the features of this model surface coating. Ab initio molecular dynamics gives further insights into the mobility of the functionalizing groups. As a final step, we studied the condensation reaction with allylamine, via Schiff base formation, to ground subsequent simulations on condensation with model peptides of antimicrobial activity.
2017
19
11
7793
7806
http://pubs.rsc.org/en/Content/ArticleLanding/2017/CP/C6CP07909A#!divAbstract
Corno, Marta; Delle Piane, Massimo; Choquet, Patrick; Ugliengo, Piero
File in questo prodotto:
File Dimensione Formato  
siam45quifunct_manuscript_revised_4aperto.pdf

Open Access dal 16/05/2018

Descrizione: Postprint
Tipo di file: POSTPRINT (VERSIONE FINALE DELL’AUTORE)
Dimensione 2.71 MB
Formato Adobe PDF
2.71 MB Adobe PDF Visualizza/Apri
printed_paper.pdf

Accesso riservato

Tipo di file: PDF EDITORIALE
Dimensione 4.79 MB
Formato Adobe PDF
4.79 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1634332
Citazioni
  • ???jsp.display-item.citation.pmc??? 2
  • Scopus 11
  • ???jsp.display-item.citation.isi??? 11
social impact