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Arras J, Calderón-Díaz A, Lebedkin S, Gozem S, McMillen CD, Bhuvanesh N, Stollenz M. Twisted and Disconnected Chains: Flexible Linear Tetracuprous Arrays and a Decanuclear Cu I Cluster as Blue- and Green/Yellow-Light Emitters. Inorg Chem 2024; 63:12943-12957. [PMID: 38935842 DOI: 10.1021/acs.inorgchem.4c01646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
Defined arrays of transition metal ions embedded in tailored polydentate ligand scaffolds allow for a systematic design of their physical properties. Such molecular strings of closed-shell transition metal centers are particularly interesting for Group 11 metal ions in the oxidation state +1 if they undergo metallophilic d10···d10 contact interactions since these clusters are oftentimes efficient photoluminescence (PL) emitters. Copper is particularly attractive as a sustainable earth-abundant coinage metal source and because of the ability of several CuI complexes to serve as powerful thermally activated delayed fluorescence (TADF) emitters in molecular/organic light-emitting devices (OLEDs). Our combined synthetic, crystallographic, photophysical, and computational study describes a straight tetracuprous array possessing a centrally disconnected CuI2···CuI2 chain and a continuous helically bent CuI4 complex. This molecular helix undergoes a facile rearrangement in diethyl ether solution, yielding an unprecedented nanosized CuI10 cluster (2.9 × 2.0 nm) upon crystallization. All three clusters show either bright blue phosphorescence, TADF, or green/yellow multiband phosphorescence with quantum yields between 6.5 and 67%, which is persistent under hydrostatic pressure up to 30 kbar. Temperature-dependent PL investigations in combination with time-dependent density-functional theory (TD-DFT) calculations and void space analyses of the crystal packings complement a comprehensive correlation between the molecular structures and photoluminescence properties.
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Affiliation(s)
- Janet Arras
- Department of Chemistry and Biochemistry, Kennesaw State University, 370 Paulding Avenue NW, MD # 1203, Kennesaw, Georgia 30144, United States
| | - Alvaro Calderón-Díaz
- Department of Chemistry and Biochemistry, Kennesaw State University, 370 Paulding Avenue NW, MD # 1203, Kennesaw, Georgia 30144, United States
| | - Sergei Lebedkin
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Herrmann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Samer Gozem
- Department of Chemistry, Georgia State University, 145 Piedmont Ave SE, Atlanta, Georgia 30303, United States
| | - Colin D McMillen
- Department of Chemistry, Clemson University, 379 Hunter Laboratories, Clemson, South Carolina 29634-0973, United States
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A&M University, 580 Ross Street, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Michael Stollenz
- Department of Chemistry and Biochemistry, Kennesaw State University, 370 Paulding Avenue NW, MD # 1203, Kennesaw, Georgia 30144, United States
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Arras J, Ugarte Trejo O, Bhuvanesh N, McMillen C, Stollenz M. Hydrogen bonds and dispersion forces serving as molecular locks for tailored Group 11 bis(amidine) complexes. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00443g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A flexible polydentate bis(amidine) ligand LH2 operates as a molecular lock for various coinage metal fragments and forms the dinuclear complexes [LH2(MCl)2], M = Cu (1), Au (2), the coordination...
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Lanthanides and actinides: Annual survey of their organometallic chemistry covering the year 2019. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213830] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Lukina DA, Skatova AA, Sokolov VG, Baranov EV, Demeshko S, Ketkov SY, Fedushkin IL. Low-coordinate Sm( ii) and Yb( ii) complexes derived from sterically-hindered 1,2-bis(imino)acenaphthene (Ar BIG-bian). Dalton Trans 2020; 49:14445-14451. [DOI: 10.1039/d0dt02963g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reduction of ArBIG-bian with metallic Sm or Yb affords monomeric Ln(ii) complexes. In (ArBIG-bian)Sm, the metal reveals a low coordination number. The stabilization of the Sm center is provided by interaction with three Ph rings.
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Affiliation(s)
- Daria A. Lukina
- G. A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences
- Nizhny Novgorod
- Russian Federation
| | - Alexandra A. Skatova
- G. A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences
- Nizhny Novgorod
- Russian Federation
| | - Vladimir G. Sokolov
- G. A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences
- Nizhny Novgorod
- Russian Federation
| | - Evgenii V. Baranov
- G. A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences
- Nizhny Novgorod
- Russian Federation
| | - Serhiy Demeshko
- Institut für Anorganische Chemie
- Georg-August-Universität
- Göttingen 37077
- Germany
| | - Sergey Yu. Ketkov
- G. A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences
- Nizhny Novgorod
- Russian Federation
| | - Igor L. Fedushkin
- G. A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences
- Nizhny Novgorod
- Russian Federation
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