Construction of a Large High-Nuclearity Cd–Sm Schiff Base Cluster with Nanoscale Inner Cavity as Luminescent Probe for Metal Cations

• Published in: Crystal growth & design Vol. 19; no. 4; pp. 2149 - 2154
• Main Authors: Wang, Chengri, Yang, Xiaoping, Wang, Shiqing, Schipper, Desmond, Jones, Richard A
• Format: Journal Article
• Language: English
• Published: American Chemical Society 03.04.2019
• ISSN: 1528-7483; 1528-7505
• DOI: 10.1021/acs.cgd.8b01766

Two Cd–Ln clusters [Ln8Cd24L12(OAc)48]·(solvent) n (Ln = Sm (1), Gd (2)) were synthesized from a specifically designed Schiff base ligand with a long (CH2)11 chain backbone. 1 and 2 show drumlike structures (24 × 24 × 26 Å3), which have nanoscale inner cavities (10 × 12 × 12 Å3). The inner cavities of the clusters are large enough to capture some guest molecules. Interestingly, 1 has visible and near-infrared emissions of Sm3+ and shows luminescent sensing behavior to metal ions, especially to Zn2+ and Fe3+ ions.