Open Access Article
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Expression of concern: Preparation of polydopamine sulfamic acid-functionalized magnetic Fe3O4 nanoparticles with a core/shell nanostructure as heterogeneous and recyclable nanocatalysts for the acetylation of alcohols, phenols, amines and thiols under solvent-free conditions
Hojat
Veisi
*a,
Sepideh
Taheri
b and
Saba
Hemmati
a
aDepartment of Chemistry, Payame Noor University, Tehran, Iran. E-mail: hojatveisi@yahoo.com; Fax: +98-8215654; Tel: +98-8215652
bDepartment of Pharmaceutical Chemistry, Faculty of Pharmaceutical Chemistry, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
First published on 27th September 2024
Abstract
Expression of concern for ‘Preparation of polydopamine sulfamic acid-functionalized magnetic Fe3O4 nanoparticles with a core/shell nanostructure as heterogeneous and recyclable nanocatalysts for the acetylation of alcohols, phenols, amines and thiols under solvent-free conditions’ by Hojat Veisi et al., Green Chem., 2016, 18, 6337–6348, https://doi.org/10.1039/C6GC01975G.
Green Chemistry is publishing this expression of concern in order to alert readers that concerns have been raised over the integrity of the data published in this article. The authors have been contacted but have not responded to requests to provide raw data. An expression of concern will continue to be associated with the article until a conclusive outcome is reached.
Michael Rowan
16th September 2024
Executive Editor, Green Chemistry
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