Synthesis, photophysical properties and application in organic light emitting devices of rhenium(i) carbonyls incorporating functionalized 2,2′:6′,2′′-terpyridines

Abstract

Photophysics of [ReCl(CO)3(4′-R-terpy-κ2N)].

Living Long and Prosperous: Productive Intraligand Charge-Transfer States from a Rhenium(I) Terpyridine Photosensitizer with Enhanced Light Absorption

“…In contrast, fac-Re(I) tricarbonyl complexes with terpyridine ligands contain a bidentate (κ 2 N ) terpyridine ligand in a bipyridine-like coordination fashion. 20,[42][43][44] The photophysical properties of a few Re-based terpyridine complexes, 45,46 as well as those with structurally-related bidentate N∧N ligands have been previously studied. 47,48 Some of these evidenced longlived intraligand charge-transfer (ILCT) states.…”

Covalent hybrids based on Re(i) tricarbonyl complexes and polypyridine-functionalized polyoxometalate: synthesis, characterization and electronic properties

“…Re(I) carbonyl diimine complexes have been the object of numerous studies in the past decades since the pioneering studies by Wrighton et al of their photophysical properties. 21 Nowadays, these complexes are mostly being studied for their selective CO 2 to CO photocatalytic reduction abilities shown for the first time by Lehn et al 22 They have also found application in other catalytic systems, 23 electroluminescent devices 24 and for biomedical purposes 25 . However, a few systems combining POM and Re(I) chromophore had been reported, based on non--covalent electrostatic interactions, such as counter--cation recognition via a crown--ether modified ligand, 26 or hydrogen bonding via a pendant amine on the Re complex.…”

Synthesis and Photochemical Properties of Re(I) Tricarbonyl Complexes Bound to Thione and Thiazole-2-ylidene Ligands

“…[1][2] These complexes are generally phosphorescent due to radiative decay from their lowest triplet metal-to-ligand charge transfer excited states ( 3 MLCT), [3][4] with potential admixture with ligand-to-ligand charge transfer excited states ( 3 LLCT), depending on the chemical identity of the ancillary ligand. [5][6][7] The photophysical properties of this class of complexes, which can be fine-tuned by chemically altering the diim and ancillary ligands, have been extensively explored in the past decades for fundamental studies [8][9][10][11][12] as well as for a range of applications such as light emitting devices, [13][14][15][16] biological labels [17][18][19][20] and photocatalysis. [21] Although Re(I) tricarbonyl diim based complexes have been explored extensively, the analogous carbene complexes fac-[Re(NHC)(CO)3L] 0/+ , where NHC is a bidentate N-heterocyclic carbene that binds to rhenium through a pyridine N atom and a carbene C atom, have started to be investigated only more recently.…”