“…[18] However, the addition of ar eductant and/ors tabilizer is also required to avoid coalescence and too btain AuNPs with well-controlled sizes, shapes, and uniformities. The reported microwave-assisted synthesis of AuNPs uses ap anel of diverse reductants and stabilizers comprising the most important of those mentioned above together with other more exclusive reagents, such as citrate, [19] alkanethiols, [20] polyols, [21] polymers [e.g.,p olyethylene glycol (PEG) [19b] and poly(amidoamine)( PAMAM) [22] ], and others reducinga nd capping ligands (e.g.,a lkylamines, [23] proteins, [24] and plant extracts [25] ). However,t ot he best of our knowledge PEI has not been previously used as ar eductant in microwave-based preparationsofA uNPs.…”