Synthesis and characterisation of hybrid materials based on gold nanoparticles and HBP hyperbranched polyesters: Preparation of ``volcano-rings'' nanostructures

One-pot green synthesis of nanohybrid structures: gold nanoparticles in poly(γ-glutamic acid) copolymer nanoparticles

“…† Compared with the diffractogram of g-PGA-g-DA bulk powder, the diffractogram of Au@g-PGA-g-DA nanohybrids shows ve additional characteristic reections around at 38 , 44 , 64 , 78 , and 82 in addition to one broad diffraction peak between 20 and 30 originating from g-PGA-g-DA copolymer, corresponding to the (111), ( 200), ( 220), (311) and (222) of the lattice plane of gold respectively, indicating the presence of Au NPs in the Au@g-PGA-g-DA nanohybrids. 45,46 In order to further investigate the composition of the Au@g-PGA-g-DA nanohybrids, Au@g-PGA-g-DA nanohybrids and g-PGA-g-DA bulk powder were analyzed by XPS. Fig.…”

“…S7(C), † the peaks of carboxylate group at 1390 cm À1 and the amide groups at 2930 and 1526 cm À1 decreased in the FT-IR spectrum of Au@g-PGA-g-DA nanohybrids compared with the FT-IR spectrum of g-PGA-g-DA copolymer, implying the chemical bonds involved in the interactions between the Au NPs and either the carboxylate groups or the amide groups. 45,46 TGA of the Au@g-PGA-g-DA nanohybrids and g-PGA-g-DA bulk powder was performed in order to nd their thermal stability and also to evaluate their composition. 47 The TGA traces of them are shown in Fig.…”

Brush-like poly(ethylene glycol) grafting on SiO2nanoparticles within-situpolymerization

“…Recently, interests for the design and synthesis of organic–inorganic nanocomposites gradually increase for the nanocomposites have wide application in the fields of optics, mechanics, ionoelectronics, and biology . These materials, termed as ‘hybrids’, are diphasic media in which both inorganic and organic phases play major roles in the chemical and physical properties.…”