Threefold Collaborative Stabilization of Ag₁₄‐Nanorods by Hydrophobic Ti₁₆‐Oxo Clusters and Alkynes: Designable Assembly and Solid‐State Optical‐Limiting Application.

Fan, Xi; Yuan, Furong; Li, Dejing; Chen, Shuai; Cheng, Zhibin; Zhang, Zhangjing; Xiang, Shengchang; Zang, Shuang‐Quan; Zhang, Jian; Zhang, Lei

Ag nanoclusters have received increasing attention due to their atomically precise and diverse structures and intriguing optical properties. Nevertheless, the inherent instability of Ag nanoclusters has seriously hindered their practical application. In this work, for the first time, Ag clusters are collaboratively protected by hydrophobic Ti‐oxo clusters and alkyne ligands. Initially, a pyramidal Ag5 cluster terminated with tBuC≡C− and CH3CN was inserted into the cavity of a Ti8‐oxo nanoring to form Ag5@Ti8. To overcome the instability of acetonitrile‐terminated silver site, such two Ag5@Ti8 clusters could sandwich an Ag4 unit to form Ag14‐nanorod@Ti16‐oxo‐nanoring (Ag14@Ti16), which is peripherally protected by fluorophenyl groups and alkyne caps. This threefold protected (hydrophobic fluorinated organic layer, Ti‐O shell, and terminal alkyne ligands) Ag14@Ti16 exhibits superhydrophobicity and excellent ambient stability, endowing it with solid‐state optical limiting characteristics.

OPTICAL limiting; ALKYNES; OPTICAL properties; HYDROPHOBIC surfaces; LIGANDS (Chemistry)

Angewandte Chemie, 2021, Vol 133, Issue 23, p13059

0044-8249

Academic Journal

10.1002/ange.202101664