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Synthesis and Characterization of Nano-Sized Poly(1,4-Diaminonaphthalene) in Potassium Persulfate
Ramil Rzayev1, Natalia Sucman2, Ion Geru2
1Laboratory of Organic Synthesis, Institute of Chemistry of the Moldova State University, str. Academiei 3, MD-2028 Chișinău, Republic of Moldova. ramilrzayev81@gmail.com.
Abstract:
A novel poly(1,4-diaminonaphthalene) was synthesized from the monomer 1,4-diaminonaphthalene at the nanoscale via an oxidative polymerization method. The reaction was conducted in an acidic (HCl) medium under an ultrasound homogenizer at 0 °C, while potassium persulfate was used as a radical initiator. This polymer has been characterized using various techniques, including FTIR, UV-Vis spectroscopy, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), NMR analysis, and electron paramagnetic resonance (EPR) methods. The nanopolymers were found to be thermally stable up to 200 °C. EPR data further substantiated the presence of unpaired electrons on the nitrogen atoms within the polymer backbone.
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