AUTHOR=Chen Hongfen , Yang Xiaoping , Jiang Weizhong , Jiang Dongmei , Shi Dongliang , Yuan Bichen , Wang Fei , Zhang Lijie , Huang Shaoming 

TITLE=Anion Dependent Self-Assembly of Polynuclear Cd-Ln Schiff Base Nanoclusters: NIR Luminescent Sensing of Nitro Explosives

JOURNAL=Frontiers in Chemistry

VOLUME=Volume 7 - 2019

YEAR=2019

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2019.00139

DOI=10.3389/fchem.2019.00139

ISSN=2296-2646

ABSTRACT=Two types of polynuclear Cd-Ln complexes [CdLnL(NO3)Cl2(DMF)2] (Ln = La (1) and Nd (2)) and [Ln2CdL2(NO3)2(DMF)2](OH)2 (Ln = La (3) and Nd (4)) were constructed using a new Schiff base ligand that has a long backbone with two phenyl groups. The Schiff base ligands show a "twist" configuration in 1-4. The crystal structures show that the molecular dimensions of 3 and 4 are about 6 × 10 × 15 Å. The Cd-Nd complexes 2 and 4 exhibit the typical NIR luminescence of Nd3+. Interestingly, 4 shows luminescent sensing of nitro explosives and exhibits high sensitivity to 2-nitrophenol at the ppm level.