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Robust and Biocompatible Functionalization of ZnS Nanoparticles by Catechol-Bearing Poly(2-methyl-2-oxazoline)s.

  • De Fazio AF Dipartimento di Scienze Chimiche , Università degli Studi di Padova , via Marzolo 1 , 35131 Padova , Italy.
  • Morgese G Polymer Surfaces Group, Laboratory for Surface Science and Technology , ETH Zürich , Vladimir-Prelog-Weg 5 , 8093-CH Zürich , Switzerland.
  • Mognato M Dipartimento di Biologia , Università degli Studi di Padova , via U. Bassi 58/B , 35131 Padova , Italy.
  • Piotto C Dipartimento di Biologia , Università degli Studi di Padova , via U. Bassi 58/B , 35131 Padova , Italy.
  • Pedron D Dipartimento di Scienze Chimiche , Università degli Studi di Padova , via Marzolo 1 , 35131 Padova , Italy.
  • Ischia G Dipartimento di Ingegneria Industriale , Università di Trento , via Sommarive 9 , 38122 Trento , Italy.
  • Causin V Dipartimento di Scienze Chimiche , Università degli Studi di Padova , via Marzolo 1 , 35131 Padova , Italy.
  • Rosenboom JG Department of Chemistry and Applied Biosciences, Institute of Chemical and Bioengineering , ETH Zürich , Vladimir-Prelog-Weg 1-5/10 8093 Zürich , Switzerland.
  • Benetti EM Polymer Surfaces Group, Laboratory for Surface Science and Technology , ETH Zürich , Vladimir-Prelog-Weg 5 , 8093-CH Zürich , Switzerland.
  • Gross S Dipartimento di Scienze Chimiche , Università degli Studi di Padova , via Marzolo 1 , 35131 Padova , Italy.
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  • 2018-09-02
Published in:
  • Langmuir : the ACS journal of surfaces and colloids. - 2018
A549 Cells
Biocompatible Materials
Catechols
Cell Survival
Humans
Luminescence
Luminescent Agents
Nanoparticles
Polyamines
Sulfides
Terbium
Zinc Compounds
English Zinc sulfide (ZnS) nanoparticles (NPs) are particularly interesting materials for their electronic and luminescent properties. Unfortunately, their robust and stable functionalization and stabilization, especially in aqueous media, has represented a challenging and not yet completely accomplished task. In this work, we report the synthesis of colloidally stable, photoluminescent and biocompatible core-polymer shell ZnS and ZnS:Tb NPs by employing a water-in-oil miniemulsion (ME) process combined with surface functionalization via catechol-bearing poly-2-methyl-2-oxazoline (PMOXA) of various molar masses. The strong binding of catechol anchors to the metal cations of the ZnS surface, coupled with the high stability of PMOXA against chemical degradation, enable the formation of suspensions presenting excellent colloidal stability. This feature, combined with the assessed photoluminescence and biocompatibility, make these hybrid NPs suitable for optical bioimaging.
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  • English
Open access status
green
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Persistent URL
https://sonar.ch/global/documents/113244
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