We report herein new luminescent rhenium(I) perfluorobiphenyl complexes that reacted specifically with the cysteine residue of the π-clamp sequence (FCPF) to afford novel peptide-based imaging reagents, photosensitisers for singlet oxygen and enzyme sensors.
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http://dx.doi.org/10.1039/d1cc04740j | DOI Listing |
Dalton Trans
January 2025
Institute of Chemistry, Faculty of Science and Technology, University of Silesia, Szkolna 9, 40-006 Katowice, Poland.
Over the last five decades, diimine rhenium(I) tricarbonyl complexes have been extensively investigated due to their remarkable and widely tuned photophysical properties. These systems are regarded as attractive targets for design functional luminescent materials and performing fundamental studies of photoinduced processes in transition metal complexes. This review summarizes the latest developments concerning Re(I) tricarbonyl complexes bearing donor-acceptor (D-A) and donor-π-acceptor (D-π-A) ligands.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
December 2024
Nikolaev Institute of Inorganic Chemistry, SB RAS, 3, Lavrentiev Ave., 630090, Novosibirsk, Russia.
Chiral rhenium(I) emitters exhibiting circularly polarized phosphorescence (CPP) are an attractive mainstay for CP organic light-emitting diodes (CP-OLEDs). However, the efficiency of such emitters is not ideal, and they have never been explored for circularly polarized electroluminescence (CPEL) applications. Here, we have tailored robust chiral Re(I) complexes with improved CPP properties, and demonstrated CPEL from rhenium emitters for the first time.
View Article and Find Full Text PDFPhys Chem Chem Phys
February 2024
Université de Strasbourg, CNRS Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504 23 rue du Loess, 67034 Strasbourg, France.
The design of enantiomerically pure circularly polarized luminescent (CPL) emitters would enormously benefit from the accurate and in-depth interpretation of the chiroptical properties by means of jointly (chiroptical) photophysical measurements and state-of-the-art theoretical investigation. Herein, computed and experimental (chiro-)optical properties of a series of eight enantiopure phosphorescent rhenium(I) tricarbonyl complexes are systematically compared in terms of electronic circular dichroism (ECD) and CPL. The compounds have general formula -[ReX(CO)(N^C)], where N^C is a pyridyl benzannulated N-heterocyclic carbene deriving from a (substituted) 2-(pyridin-2-yl)imidazo[1,5-]pyridin-2-ium proligand and X = Cl, Br and I, and display structured red phosphorescence with long-lived ( = 7.
View Article and Find Full Text PDFChemistry
April 2023
Univ Rennes, CNRS, ISCR -, UMR 6226, 35000, Rennes, France.
The photophysical and chiroptical properties of a novel, chiral helicene-NHC-Re(I) complex bearing an N-(aza[6]helicenyl)-benzimidazolylidene ligand are described, showing its ability to emit yellow circularly polarized luminescence. A comparative analysis of this new system with other helicene-Re(I) complexes reported to date illustrates the impact of structural modifications on the emissive and absorptive properties.
View Article and Find Full Text PDFDalton Trans
January 2023
Department of Chemistry, Fu Jen Catholic University, New Taipei City 24205, Taiwan.
A rare -generated mononuclear rhenium complex [Re(bpt)(CO)(NH)] (1, bpt = 3,5-bis(2-pyridyl)-1,2,4-triazolate) can be used as a "turn-on" luminescent probe for selectively sensing L-histidine against other amino acids. Compound 1 was prepared by reacting Re(CO), 2-cyanopyridine and hydrazine with an formed bpt ligand through cyclization C-N and N-N couplings with its single-side chelating mode arrayed with respect to the Re center. Compound 1 was highly stable and showed a green light MLCT emission in DMF solution at 507 nm upon excitation at 360 nm.
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