Versatile bimetallic lanthanide metal-organic frameworks for tunable emission and efficient fluorescence sensing

By Yan Su, Junhong Yu, Youbing Li, Soo Zeng Fiona Phua, Guofeng Liu, Wei Qi Lim, Xiaozhan Yang, Rakesh Ganguly, Cuong Dang, Chaolong Yang and 1 more. Communications Chemistry, 2018

171 citations recorded by the source corpus.

Developing novel lanthanide metal-organic frameworks (Ln-MOFs) to rapidly and reliably differentiate both metal ions in solution and volatile organic compounds (VOCs) in vapor is highly challenging. Here, we describe versatile Eu3+/Tb3+-MOFs based on a flexible ligand. It is noteworthy that the film fabricated using bimetallic Eu0.47Tb0.63-MOF and polyvinyl alcohol could serve as an easy and convenient luminescent platform for distinguishing different metal ions and VOCs. The luminescent film exhibits notable fingerprint correlation between the metal ions/VOCs and the emission intensity ratio of Eu3+/Tb3+ ions in Ln-MOFs. As a result, the bimetallic Ln-MOFs show fast recognition of Fe3+ ion with a response time of <10 s, and can effectively probe styrene vapor within 4 min. Since the developed Ln-MOF film is stable and reliable, this work presents a promising strategy to explore luminescent platforms capable of effectively sensing different metal ions and VOCs.Developing versatile luminescent platforms to distinguish metal ions in water, and volatile organic compounds is challenging. Here, a film containing bimetallic lanthanide metal-organic frameworks selectively recognize aqueous ferric ions within seconds and styrene vapor within minutes.

Subfields: Inorganic Chemistry, Materials Chemistry, Spectroscopy

View Paper: https://www.semanticscholar.org/paper/63d1064b3f5e7491708f71722532e97a55926792