Key Features of Bolaamphiphile Structures for the Synthesis, Stabilization, and Catalytic Properties of Gold Nanoparticles

Abstract

Bolaamphiphilic-type structures can be effective substitutes to conventional surfactants for the interaction and stabilization of colloidal interfaces in water. Different families of bolaamphiphiles were used as a growth control and stabilizing agent for the formation of gold nanoparticles (AuNPs). The nature of polar heads and the length of hydrophobic chain are key parameters for modulating the interaction with gold surfaces. In particular, interactions between hydrophobic chains dramatically strengthen the interactions with NP surfaces leading to a reversible aggregation process. This affects not only the gold nanoparticle growth mechanism and stabilization properties but also the catalytic properties of the modified gold nanoparticles.

Effect of Thermo‐ and pH‐Sensitive Block Copolymer Structure and Composition on the Synthesis and Stabilization of Gold Nanoparticles

“…The synthesis of AuNPs involving the reduction of NaAuCl 4 by NaBH 4 , resulted in negatively charged nanoparticles with an approximate radius of 5±2 nm [5] . These nanoparticles, are prone to interact with the studied polymers.…”

“…The synthesis of AuNPs involving the reduction of NaAuCl 4 by NaBH 4 , resulted in negatively charged nanoparticles with an approximate radius of 5 � 2 nm. [5] These nanoparticles, are prone to interact with the studied polymers. The different polymers under examination feature a trithio carbonyl group rich in sulfur at their termini.…”

“…The outstanding electronic, optical, and catalytic properties of metallic nanoparticles, particularly gold nanoparticles (AuNPs), have garnered considerable attention due to their ability to open up broad application prospects, ranging from optoelectronics to biology. [1][2][3][4][5] These properties are strongly dependent on the size and the shape of the particles, the nature of the protective organic coating, and the interparticle distance.…”