Schematic representation of the synthesis of N-diazeniumdiolate-modified SiNPs using TEOS and N-(6-aminohexyl)aminopropyltrimethoxysilane as tetraalkoxysilane and aminoalkoxysilane precursors. Reprinted from Seabra and Durán [31], with the permission of Royal Society of Chemistry (http://www.rsc.org).
