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Robust and biocompatible functionalization of ZnS nanoparticles by catechol-bearing poly(2-methyl-2-oxazoline)s

Robust and biocompatible functionalization of ZnS nanoparticles by catechol-bearing poly(2-methyl-2-oxazoline)s
Robust and biocompatible functionalization of ZnS nanoparticles by catechol-bearing poly(2-methyl-2-oxazoline)s

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.

0743-7463
11534-11543
De Fazio, Angela Federica
e4115c3b-5447-4f30-8608-9e4115bc7d59
Morgese, Giulia
f2ff0391-b3a9-4bfe-a293-0bbd9ff2f135
Mognato, Maddalena
b190d419-739e-41e8-94c0-65e9e4eb89a9
Piotto, Celeste
4b17b316-0458-4969-a1d9-8b0411df4bf8
Pedron, Danilo
2c226ada-2c22-4116-a26b-e9e42e5cd2a7
Ischia, Gloria
02ca3396-d74f-471b-83b7-2fd3a8724f38
Causin, Valerio
587c85dd-c4ba-4515-9aeb-6135bdb39fb3
Rosenboom, Jan Georg
3406fb7a-67f0-4d81-a596-3b0d6952c8e7
Benetti, Edmondo M.
fb6e69c9-427a-40d4-8c02-d37f574e2bc1
Gross, Silvia
2015f08a-b802-4f48-86f6-9f4fae250fb0
De Fazio, Angela Federica
e4115c3b-5447-4f30-8608-9e4115bc7d59
Morgese, Giulia
f2ff0391-b3a9-4bfe-a293-0bbd9ff2f135
Mognato, Maddalena
b190d419-739e-41e8-94c0-65e9e4eb89a9
Piotto, Celeste
4b17b316-0458-4969-a1d9-8b0411df4bf8
Pedron, Danilo
2c226ada-2c22-4116-a26b-e9e42e5cd2a7
Ischia, Gloria
02ca3396-d74f-471b-83b7-2fd3a8724f38
Causin, Valerio
587c85dd-c4ba-4515-9aeb-6135bdb39fb3
Rosenboom, Jan Georg
3406fb7a-67f0-4d81-a596-3b0d6952c8e7
Benetti, Edmondo M.
fb6e69c9-427a-40d4-8c02-d37f574e2bc1
Gross, Silvia
2015f08a-b802-4f48-86f6-9f4fae250fb0

De Fazio, Angela Federica, Morgese, Giulia, Mognato, Maddalena, Piotto, Celeste, Pedron, Danilo, Ischia, Gloria, Causin, Valerio, Rosenboom, Jan Georg, Benetti, Edmondo M. and Gross, Silvia (2018) Robust and biocompatible functionalization of ZnS nanoparticles by catechol-bearing poly(2-methyl-2-oxazoline)s. Langmuir, 34 (38), 11534-11543. (doi:10.1021/acs.langmuir.8b02287).

Record type: Article

Abstract

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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e-pub ahead of print date: 31 August 2018
Published date: 25 September 2018

Identifiers

Local EPrints ID: 426579
URI: http://eprints.soton.ac.uk/id/eprint/426579
ISSN: 0743-7463
PURE UUID: 235801d5-f244-4918-a1a2-9a5969b00d73

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Date deposited: 30 Nov 2018 17:30
Last modified: 07 Oct 2020 00:28

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Contributors

Author: Angela Federica De Fazio
Author: Giulia Morgese
Author: Maddalena Mognato
Author: Celeste Piotto
Author: Danilo Pedron
Author: Gloria Ischia
Author: Valerio Causin
Author: Jan Georg Rosenboom
Author: Edmondo M. Benetti
Author: Silvia Gross

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