Výsledky vyhledávání - "J A Gareth Williams"

Platinum(IV) Complexes with Tridentate, NNC-Coordinating Ligands: Synthesis, Structures, and Luminescence

Autor: Yana M. Dikova, Dmitry S. Yufit, J. A. Gareth Williams

Publikováno v: Inorganic Chemistry, 2023, Vol.62(4), pp.1306-1322 [Peer Reviewed Journal]

Platinum(II) complexes of NNC-cyclometalating ligands based on 6-phenyl-2,2′-bipyridine (HL1) have been widely investigated for their luminescence properties. We describe how PtL1Cl and five analogues with differently substituted aryl rings, PtL2�

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4caed688271612893a8d400257fc6996
https://doi.org/10.1021/acs.inorgchem.2c04116

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Synthesis and Coordination Chemistry of a Benzannulated Bipyridine: 6,6′-Biphenanthridine

Autor: David Herbert, Issiah B. Lozada, Dion Nemez, Jason Braun, J A Gareth Williams

Publikováno v: Inorganic Chemistry. 61:13386-13398

The synthesis, characterization, and coordination chemistry of a doubly π-extended bipyridine analogue, 6,6'-biphenanthridine (biphe), is presented. The structure of the molecule has been determined in the solid state by X-ray diffraction, showing a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2a146a913a8357e5413e77f3ccc8204
https://doi.org/10.1021/acs.inorgchem.2c01514

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Enantiopure cycloplatinated pentahelicenic N-heterocyclic carbenic complexes that display long-lived circularly polarized phosphorescence

Autor: Debsouri Kundu, Natalia del Rio, Marie Cordier, Nicolas Vanthuyne, Emma V. Puttock, Stefan C. J. Meskers, J. A. Gareth Williams, Monika Srebro-Hooper, Jeanne Crassous

Publikováno v: Dalton Transactions
Dalton Transactions, 2023, ⟨10.1039/d3dt00577a⟩
Dalton Transactions, 52(19), 6484-6493. Royal Society of Chemistry

The preparation of the first enantiopure cycloplatinated complexes bearing a bidentate, helicenic N-heterocyclic carbene and a diketonate ancillary ligand is presented along with their structural and spectroscopic characterization based on both exper

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9100b68c325d6b25c361e80faf7cf378
https://hal.science/hal-04088974/file/d3dt00577a.pdf

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Enhancement of thermally activated delayed fluorescence properties by substitution of ancillary halogen in a multiple resonance-like diplatinum(ii) complex

Autor: Andrey Zaytsev, Valery Kozhevnikov, Piotr Pander, Fernando B. Dias, AMIT SIL, J A Gareth Williams

Publikováno v: Journal of Materials Chemistry C, 2022, Vol.10(12), pp.4851-4860 [Peer Reviewed Journal]

We present an in-depth investigation of the influence of chloro-to-iodo exchange on the thermally activated delayed fluorescence (TADF) of a dinuclear platinum(II) complex featuring monodentate halide ancillary ligands. The complexes are constructed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5379b3b39690197778b33d82624ce222
https://doi.org/10.1039/d1tc05026e

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Excimer or aggregate? Near infrared electro- and photoluminescence from multimolecular excited states of N^C^N-coordinated platinum(ii) complexes

Autor: Piotr Pander, Amit Sil, Rebecca J. Salthouse, Christopher W. Harris, Melissa T. Walden, Dmitry S. Yufit, J. A. Gareth Williams, Fernando B. Dias

Publikováno v: Journal of Materials Chemistry C, 2022, Vol.10(40), pp.15084-15095 [Peer Reviewed Journal]

We present an experimental and theoretical study of aggregate excited states formed by complexes of the type Pt(N^C^N)Cl, which display near-infrared (NIR) photoluminescence in film and NIR electroluminescence in OLED devices. Here, N^C^N represents

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31e78e7e2465880f01132e9d1a4f4f85
https://doi.org/10.1039/d2tc01511k

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Near-infrared electroluminescence beyond 940 nm in Pt(N^C^N)X complexes: influencing aggregation with the ancillary ligand X

Autor: Rebecca J. Salthouse, Piotr Pander, Dmitry S. Yufit, Fernando B. Dias, J. A. Gareth Williams

Publikováno v: Chemical Science, 2022, Vol.13(45), pp.13600-13610 [Peer Reviewed Journal]

We present a study of aggregate excited states formed by complexes of the type Pt(N^C^N)X, where N^C^N represents a tridentate cyclometallating ligand, and X = SCN or I. These materials display near-infrared (NIR) photoluminescence in film and electr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d8a5755f115181897d220d3d94ebcd1
https://doi.org/10.1039/d2sc05023d

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Platinum(ii) complexes of benzannulated N∧N−∧O-amido ligands: bright orange phosphors with long-lived excited states

Autor: David E. Herbert, Issiah B. Lozada, J. A. Gareth Williams

Publikováno v: Inorganic chemistry frontiers, 2022, Vol.9(1), pp.10-22 [Peer Reviewed Journal]

The synthesis, structural characterization and photophysical properties of a series of platinum(II) complexes of benzannulated pincer-type diarylamido ligands are described. The ligands all contain tricyclic phenanthridine (3,4-benzoquinoline) rings

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7c04fd43726ff2862b68523b63a7b96
https://doi.org/10.1039/d1qi01120k

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Modulation of chiroptical and photophysical properties in helicenic rhenium(I) systems : the use of an N-(aza[6]helicenyl)-NHC ligand

Autor: Etienne S. Gauthier, Laura Abella, Elsa Caytan, Thierry Roisnel, Nicolas Vanthuyne, Ludovic Favereau, Monika Srebro‐Hooper, J. A. Gareth Williams, Jochen Autschbach, Jeanne Crassous

Publikováno v: Chemistry – A European Journal, 2023, Vol.29(21) [Peer Reviewed Journal]
Chemistry-A European Journal
Chemistry-A European Journal, 2023, ⟨10.1002/chem.202203477⟩

International audience; 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 lumine

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2705a9c3f1aa04c5d7b0f2ff2ff0476b
https://ruj.uj.edu.pl/xmlui/handle/item/311419

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Donor–Acceptor Boron-Ketoiminate Complexes with Pendent N-Heterocyclic Arms: Switched-on Luminescence through N-Heterocycle Methylation

Autor: David Herbert, Issiah B. Lozada, Jason Braun, Robert Ortiz, J A Gareth Williams

Publikováno v: Journal of organic chemistry, 2022, Vol.87(1), pp.184-196 [Peer Reviewed Journal]

A series of intramolecular, donor-stabilized BF2 complexes supported by phenanthridinyl-decorated, β-ketoiminate chelating ligand scaffolds is described, along with their characterization by spectroscopy and X-ray diffraction. In solution, the relat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c48bc5cfd32731297249e32df43d762
https://doi.org/10.1021/acs.joc.1c02138

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