Functionalisation of ligands through click chemistry: long-lived NIR emission from organic Er(iii) complexes with a perfluorinated core and a hydrogen-containing shell†
Y. Peng,J. X. Hu,H. Lu,R. M. Wilson,M. Motevalli,I. Hernández,P. B. Wyatt,H. Q. Ye
RSC Advances Pub Date : 12/22/2016 00:00:00 , DOI:10.1039/C6RA25494B
Abstract

Erbium complexes with a fluorinated organic core shell linked to a hydrogen-containing shell, have been synthesized using the click reaction between erbium(III) bis(perfluoro-4-azidophenyl)phosphinate and a series of alkynes. The erbium 1.5 μm emission lifetimes in the hydrogen-containing erbium complexes exceed 140 μs, the longest ever reported in hydrogenated organic erbium systems. The visible sensitisation for erbium emission indicates a successful strategy that broadens the usage of non-fluorinated chromophores in organic erbium systems and allows more choices for ligand functionalization with exceptional efficiency for erbium emission.

Graphical abstract: Functionalisation of ligands through click chemistry: long-lived NIR emission from organic Er(iii) complexes with a perfluorinated core and a hydrogen-containing shell