Seedless Synthesis of Monodispersed Gold Nanorods with Remarkably High Yield: Synergistic Effect of Template Modification and Growth Kinetics Regulation

Abstract Gold nanorods (AuNRs) are versatile materials due to their broadly tunable optical properties associated with their anisotropic feature. Conventional seed‐mediated synthesis is, however, not only limited by the operational complexity and over‐sensitivity towards subtle changes of experimental conditions but also suffers from low yield (≈15 %). A facile seedless method is reported to overcome these challenges. Monodispersed AuNRs with high yield (≈100 %) and highly adjustable longitudinal surface plasmon resonance (LSPR) are reproducibly synthesized. The parameters that influence the AuNRs growth were thoroughly investigated in terms of growth kinetics and soft‐template regulation, offering a better understanding of the template‐based mechanism. The facile synthesis, broad tunability of LSRP, high reproducibility, high yield, and ease of scale‐up make this method promising for the future mass production of monodispersed AuNRs for applications in catalysis, sensing, and biomedicine.