Improvement of Thermal Stability of Gold Nanoparticles by Synergistic Interligand Interactions
作者:Atsushi Okumura、Yoshitaka Tsuchido、Kou Yamada、Kenji Todori、Shigeru Machida
DOI:10.1246/cl.2012.708
日期:2012.7.5
Three types of novel gold nanoparticles containing a different condensed ring in their ligands were prepared. Their thermal stability was found to be much higher than that of typical gold nanoparticles surrounded by long-chain alkanethiols because of strong interligand interaction formed by the condensed rings (π–π stacking). A clear correlation was found between the thermal stability and the strength of π–π stacking.
制备了三种含有不同缩合环的配体的新型金纳米颗粒。由于缩合环形成的强配体间相互作用(π-π堆叠),它们的热稳定性明显高于环烷基硫醇包围的典型金纳米颗粒。热稳定性与π-π堆叠强度之间存在清晰的相关性。