Cover Page June-2019-Advanced Materials Letters

Advanced Materials Letters

Volume 10, Issue 6, Pages 386-390, June 2019
About Cover

The cover photo describes the graphical representation of a programmable microfluidic device for the capture and detection of a variety of cells and bacteria. Recently, the interest in microfluidic technology has progressed considerably since the last decade due to its advanced applications in many areas including protein biochemistry, cell culture, detection, and electromechanical systems.


Bottom-up design of hydrogels through click-chemistry modification of magnetic nanoparticles

Ilaria Meazzini, Massimo Bonini, Francesca Ridi*, Piero Baglioni

Department of Chemistry “Ugo Schiff” & CSGI, University of Florence, via della Lastruccia 3, Sesto Fiorentino (FI), 50019, Italy

Adv. Mater. Lett., 2019, 10 (6), pp 386-390

DOI: 10.5185/amlett.2018.2214

Publication Date (Web): Oct 26, 2018

E-mail: francesca.ridi@unifi.it

Abstract

The paper describes a modular approach based on click chemistry for the surface modification of magnetic oxide nanoparticles and their covalent inclusion within chemical hydrogels. As a proof of concept, we prepared cobalt ferrite nanoparticles and we modified their surfaces through the reaction with molecules bearing a carboxylic function and, alternatively, either an azide or an alkyne moiety. In the second step, the modified nanoparticles were reacted through a Huisgen 1,3-dipolar cycloaddition with a molecule bearing an unsaturated function and either an alkyne or an azide moiety, respectively. Finally, the particles were successfully copolymerized with acrylamide and N,N'-methylenebisacrylamide to obtain a magnetically responsive hydrogel. This approach could be easily extended towards any type of inorganic oxide nanoparticles and their inclusion within any radically co-polymerized hydrogel. 

Keywords

Polymeric nanocomposite, magnetic nanoparticles, click-chemistry, polyacrylamide gel, responsive materials.

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