TY - JOUR

T1 - Polynuclear cage-like Au(I) phosphane complexes based on S2− template; observation of multiple luminescence in coordinated polyaromatic systems

AU - Shakirova, Julia R.

AU - Grachova, Elena V.

AU - Sizov, Vladimir V.

AU - Starova, Galina L.

AU - Koshevoy, Igor O.

AU - Melnikov, Alexey S.

AU - Gimeno, M. Concepción

AU - Laguna, Antonio

AU - Tunik, Sergey P.

PY - 2017

Y1 - 2017

N2 - A rational approach to the synthesis of cage-like compounds has been realized to build a new family of sulfido-phosphane Au(I) polynuclear complexes. Ditopic phosphane ligands with an extended aromatic system were used to obtain cage compounds with a clearly determined geometry. Au(I) complexes have been fully characterised in solution using spectroscopy methods, and DFT optimisation of the molecular structure gives additional arguments in favour of the suggested structural patterns. All complexes obtained are luminescent in solution and in the solid state, and display multiple emissions with an unusual combination of two phosphorescence bands and one fluorescence band. DFT calculations show that multiple emissions were mainly determined by 1IL and metal perturbed 3IL transitions. The ratio of singlet and triplet emission components depends on the distance between the ligand chromophoric centre and Au(I).

AB - A rational approach to the synthesis of cage-like compounds has been realized to build a new family of sulfido-phosphane Au(I) polynuclear complexes. Ditopic phosphane ligands with an extended aromatic system were used to obtain cage compounds with a clearly determined geometry. Au(I) complexes have been fully characterised in solution using spectroscopy methods, and DFT optimisation of the molecular structure gives additional arguments in favour of the suggested structural patterns. All complexes obtained are luminescent in solution and in the solid state, and display multiple emissions with an unusual combination of two phosphorescence bands and one fluorescence band. DFT calculations show that multiple emissions were mainly determined by 1IL and metal perturbed 3IL transitions. The ratio of singlet and triplet emission components depends on the distance between the ligand chromophoric centre and Au(I).

UR - https://pubs.rsc.org/en/content/articlelanding/2017/dt/c6dt04126d#!divAbstract

U2 - 10.1039/C6DT04126D

DO - 10.1039/C6DT04126D

M3 - Article

VL - 46

SP - 2516

EP - 2523

JO - Dalton Transactions

JF - Dalton Transactions

SN - 1477-9226

IS - 8

ER -