Rosa_et_al-2017-European_Journal_of_Inorganic_Chemistry.pdf (8.31 MB)
An efficient method for the surface functionalization of luminescent quantum dots with lipoic acid-based ligands
journal contribution
posted on 2017-09-22, 09:36 authored by Marcello La Rosa, Tommaso Avellini, Christophe Lincheneau, Serena Silvi, Iain Wright, Edwin C. Constable, Alberto CrediWe describe an operationally advantageous general methodology to efficiently activate lipoic acid-based compounds - a
family of popular surface ligands for semiconductor nanocrystals - by
the use of a borohydride exchange resin, and the use of the activated species to replace the native surface ligands of quantum dots. The procedure enables the phase transfer of the nanocrystals between
polar and aqueous media and, if unsubstituted lipoic acid is used, a
facile adjustment of their solubility in a wide range of solvents with varying polarity (from hexane to water). We show that the protocol is applicable to different types of nanocrystals and a variety of lipoic acid-based ligands, and that the resulting quantum dots maintain their optical properties - in particular, an intense luminescence - and long
term colloidal stability.
Funding
Financial support from the EU (FP7-NMP project Hysens, No. 263091), the Italian Ministry for Education, University and Research (PRIN 2010CX2TLM InfoChem), and the University of Bologna is gratefully acknowledged.
History
School
- Science
Department
- Chemistry
Published in
European Journal of Inorganic ChemistryCitation
LA ROSA, M. ... et al, 2017. An efficient method for the surface functionalization of luminescent quantum dots with lipoic acid-based ligands. European Journal of Inorganic Chemistry, 2017 (44), pp. 5143–5151.Publisher
© WileyVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Acceptance date
2017-09-19Publication date
2017Notes
This is the peer reviewed version of the following article: LA ROSA, M. ... et al, 2017. An efficient method for the surface functionalization of luminescent quantum dots with lipoic acid-based ligands. European Journal of Inorganic Chemistry, 2017 (44), pp. 5143–5151, which has been published in final form at https://doi.org/10.1002/ejic.201700781. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.ISSN
1434-1948eISSN
1099-0682Publisher version
Language
- en