Unprecedented Efficient Structure Controlled Phosphorescence of Silver(I) Clusters Stabilized by Carba-closo-dodecaboranylethynyl Ligands

Michael Hailmann; Natalia Wolf; Rebecca Renner; Thomas C Schäfer; Benjamin Hupp; Andreas Steffen; Maik Finze

doi:10.1002/anie.201604198

Unprecedented Efficient Structure Controlled Phosphorescence of Silver(I) Clusters Stabilized by Carba-closo-dodecaboranylethynyl Ligands

Angew Chem Int Ed Engl. 2016 Aug 22;55(35):10507-11. doi: 10.1002/anie.201604198. Epub 2016 Jul 19.

Authors

Michael Hailmann¹, Natalia Wolf¹, Rebecca Renner¹, Thomas C Schäfer¹, Benjamin Hupp¹, Andreas Steffen², Maik Finze³

Affiliations

¹ Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.
² Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany. andreas.steffen@uni-wuerzburg.de.
³ Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany. maik.finze@uni-wuerzburg.de.

PMID: 27431194
DOI: 10.1002/anie.201604198

Abstract

{Ag2 (12-C≡C-closo-1-CB11 H11 )}n and selected pyridine ligands have been used for the synthesis of photostable Ag(I) clusters that, with one exception, exhibit for Ag(I) compounds unusual room-temperature phosphorescence. Extraordinarily intense phosphorescence was observed for a distorted pentagonal bipyramidal Ag(I) 7 cluster that shows an unprecedented quantum yield of Φ=0.76 for Ag(I) clusters. The luminescence properties correlate with the structures of the central Ag(I) n motifs as shown by comparison of the emission properties of the clusters with different numbers of Ag(I) ions, different charges, and electronically different pyridine ligands.

Keywords: alkynyl ligands; carborates; luminescence; metal-metal interactions; self-assembly.

Publication types

Research Support, Non-U.S. Gov't