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Tong KM, Toigo J, Kamal S, Patrick BO, Wolf MO. Luminescent Platinum(II) Complexes with Stimuli-Responsive Flexible Lewis Pair Ligands: Spectroscopic and Computational Studies. Chemistry 2024:e202401657. [PMID: 39005108 DOI: 10.1002/chem.202401657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 06/16/2024] [Accepted: 07/09/2024] [Indexed: 07/16/2024]
Abstract
A series of new luminescent bimetallic platinum(II) complexes with stimuli-responsive flexible Lewis pair (FlexLP) ligands are described. The FlexLP ligands consist of a dimesitylboron Lewis acid and diphenylphosphine oxide Lewis base which are in equilibrium between the unbound open form and the Lewis adduct, controlled by the hydrogen bond donating strength of the solvent. Spectroscopic techniques and density functional theory (DFT) calculations were used to interpret the photophysics of the platinum(II) complexes. All complexes exhibit tunable absorption in the region of 300-500 nm and green to orange photoluminescence, depending on the ratio of weak (THF) to strong (MeOH) hydrogen bond donating solvent employed. Spectroscopic and computational data shows that phosphine and peripheral acetylide ligands on the platinum(II) centers have limited influence on the emission energy, indicating the emission originates from the FlexLP-dominated fluorescence. Using time-resolved transient absorption spectroscopy it is shown that the complexes undergo intersystem crossing (ISC) to the triplet excited state upon photoexcitation, and the ISC efficiency is affected by the peripheral acetylide ligands. The triplet excited state lifetime can also be manipulated by the state of the FlexLP ligand, with the closed form complexes having longer lifetimes than the open form complexes.
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Affiliation(s)
- Ka-Ming Tong
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, V6T 1Z1, Canada
| | - Jessica Toigo
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, V6T 1Z1, Canada
| | - Saeid Kamal
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, V6T 1Z1, Canada
| | - Brian O Patrick
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, V6T 1Z1, Canada
| | - Michael O Wolf
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, V6T 1Z1, Canada
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2
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Evariste S, Harrison AM, Sarkar S, Rheingold AL, Dunietz BD, Heinicke JW, Delgado Rosario E, Yoon S, Teets TS, Protasiewicz JD. Luminescent 1 H-1,3-benzazaphospholes. RSC Adv 2022; 13:594-601. [PMID: 36605673 PMCID: PMC9773327 DOI: 10.1039/d2ra07226b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022] Open
Abstract
2-R-1H-1,3-Benzazaphospholes (R-BAPs) are an interesting class of σ2P heterocycles containing P[double bond, length as m-dash]C bonds. While closely related 2-R-1,3-benzoxaphospholes (R-BOPs) have been shown to be highly photoluminescent materials depending on specific R substituents, photoluminescence of R-BAPs has been previously limited to an example having a fused carbazole ring system. Here we detail the synthesis and structural characterization of a new R-BAP (3c, R = 2,2'-dithiophene), and compare its photoluminescence against two previously reported R-BAPs (3a, R, R' = Me and 3b, R = 2-thiophene). The significant fluorescence displayed by the thiophene derivatives 3b (φ = 0.53) and 3c (φ = 0.12) stands in contrast to the weakly emissive methyl substituted analogue 3a (φ = 0.08). Comparative computational investigations of 3a-c offer insights into the interplay between structure-function relationships affecting excited state relaxation processes.
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Affiliation(s)
- Sloane Evariste
- Department of Chemistry, Case Western Reserve UniversityClevelandOhio 44106USA
| | | | - Sunandan Sarkar
- Department of Chemistry, National Institute of Technology TiruchirappalliTiruchirappalliTamil Nadu 620015India
| | - Arnold L. Rheingold
- Department of Chemistry and Biochemistry, University of CaliforniaLa JollaSan DiegoCalifornia 92093USA
| | - Barry D. Dunietz
- Department of Chemistry and Biochemistry, Kent State UniversityKentOhio 44242USA
| | - Joachim W. Heinicke
- Institut für Biochemie, Anorganische Chemie, Ernst-Moritz-Arndt-Universität GreifswaldFelix-Hausdorff-Str. 4, D-17489GreisfwaldGermany
| | | | - Sungwoon Yoon
- Department of Chemistry, University of Houston3585 Cullen Blvd. Room 112HoustonTX 77204-5003USA
| | - Thomas S. Teets
- Department of Chemistry, University of Houston3585 Cullen Blvd. Room 112HoustonTX 77204-5003USA
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Adachi Y, Sakabe M, Nomura T, Ohshita J. Conjugated polymers with thiophene-fused thiaborin units and their strong intermolecular interactions. Polym J 2022. [DOI: 10.1038/s41428-022-00726-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Ikeda S, Yoshimura A, Shirahata T, Matano Y, Misaki Y. π-Conjugated Molecules Containing Tetrathiafulvalene and Benzo[ b]phosphole Oxide: Synthesis, Structure, and Electrochemical and Optical Properties. CHEM LETT 2021. [DOI: 10.1246/cl.210218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Shunki Ikeda
- Department of Applied Chemistry, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
| | - Aya Yoshimura
- Department of Applied Chemistry, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
- Research Unit for Power Generation and Storage Materials, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
| | - Takashi Shirahata
- Department of Applied Chemistry, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
- Research Unit for Power Generation and Storage Materials, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
- Research Unit for Development of Organic Superconductors, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
| | - Yoshihiro Matano
- Department of Chemistry, Faculty of Science, Niigata University, Nishi-ku, Niigata 950-2181, Japan
| | - Yohji Misaki
- Department of Applied Chemistry, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
- Research Unit for Power Generation and Storage Materials, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
- Research Unit for Development of Organic Superconductors, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
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5
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Yoshimura A, Misaki Y. Periphery Modification of Tetrathiafulvalenes: Recent Development and Applications. CHEM REC 2021; 21:3520-3531. [PMID: 34086402 DOI: 10.1002/tcr.202100107] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/13/2021] [Accepted: 05/14/2021] [Indexed: 12/17/2022]
Abstract
Tetrathiafulvalene (TTF) and its analogs are fascinating molecules in materials science based on their excellent electron-donating abilities. This personal account describes recent advances in the synthesis of TTF analogs for functional materials via the palladium-catalyzed modification of peripheries of TTF analogs. We first consider three types of molecules: fluorophore-TTF hybrid molecules, multi-redox systems, and an organic ligand for metal-organic frameworks. These molecules were successfully synthesized via Stille coupling or palladium-catalyzed direct C-H arylation and their structural, electrochemical, and optical properties were clarified. Subsequently, phosphorus-substituted TTF analogs were successfully synthesized for future applications of redox-active phosphine ligands for metal catalysts. The development of these molecules can significantly affect the advancement of chemical science.
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Affiliation(s)
- Aya Yoshimura
- Department of Applied Chemistry, Graduate School of Science and Engineering/ Research Unit for Power Generation and Storage Materials, Ehime University, 3 Bunkyo-cho, Matsuyama, 790-8577, Japan
| | - Yohji Misaki
- Department of Applied Chemistry, Graduate School of Science and Engineering/ Research Unit for Power Generation and Storage Materials, Ehime University, 3 Bunkyo-cho, Matsuyama, 790-8577, Japan.,Research Unit for Development of Organic Superconductors, Ehime University, 2-5 Bunkyo-cho, Matsuyama, 790-8577, Japan
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Ishida K, Higashino T, Wada Y, Kaji H, Saeki A, Imahori H. Thiophene-Fused Naphthodiphospholes: Modulation of the Structural and Electronic Properties of Polycyclic Aromatics by Precise Fusion of Heteroles. Chempluschem 2021; 86:130-136. [PMID: 33415824 DOI: 10.1002/cplu.202000800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 12/17/2020] [Indexed: 11/10/2022]
Abstract
For polycyclic aromatics with heterole-fused structures, the orientation of fused heterole rings as well as the geometry of their fused structures has a large impact on the physicochemical properties. In this study, a series of isomers of thiophene-fused naphthodiphospholes was designed and synthesized. Systematic investigation unveiled the explicit impact of heterole-fused structures on their structural and electronic properties. The isomers with 1,2/5,6-fused structure display phosphorescence due to enhanced spin-orbit coupling, whereas the isomers with 2,3/6,7-fused structure exhibit intense fluorescence. The trans isomers exhibited 1D slip π-stacked arrangement. In contrast, the cis isomers displayed 2D herringbone structure or columnar structure with a cavity. Therefore, the precisely controlled fusion of heterole rings is a universal approach to uncover their intrinsic properties for versatile applications as organic functional materials.
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Affiliation(s)
- Keiichi Ishida
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Tomohiro Higashino
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Yoshimasa Wada
- Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan
| | - Hironori Kaji
- Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan
| | - Akinori Saeki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Hiroshi Imahori
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku, Kyoto, 615-8510, Japan.,Institute for integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University Sakyo-ku, Kyoto, 606-8501, Japan
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7
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Guo J, Mao C, Deng B, Ye L, Yin Y, Gao Y, Tu S. Azobisisobutyronitrile-Initiated Oxidative C-H Functionalization of Simple Alcohols with Diaryl(arylethynyl)phosphine Oxides: A Metal-Free Approach toward Hydroxymethyl Benzo[ b]phosphole Oxides and 6 H-Indeno[2,1- b]phosphindole 5-Oxide Derivatives. J Org Chem 2020; 85:6359-6371. [PMID: 32299209 DOI: 10.1021/acs.joc.0c00118] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first metal-free and facile radical addition/cyclization of simple alcohols with diaryl(arylethynyl)phosphine oxides has been described with azobisisobutyronitrile as a radical initiator, affording an efficient and one-pot procedure to access a new class of hydroxymethyl benzo[b]phosphole oxides and 6H-indeno[2,1-b]phosphindole 5-oxides for potential application in organic materials via sequential C(sp3)-H/C(sp2)-H functionalization. The method employs easily accessible starting materials and is endowed with high regioselectivity and broad functional-group tolerance.
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Affiliation(s)
- Jiami Guo
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
| | - Chenlu Mao
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
| | - Bin Deng
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
| | - Liyi Ye
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
| | - Yingwu Yin
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
| | - Yuxing Gao
- Department of Chemistry and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
| | - Song Tu
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
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Batsyts S, Shehedyn M, Goreshnik EA, Obushak MD, Schmidt A, Ostapiuk YV. 2‐Bromo‐2‐chloro‐3‐arylpropanenitriles as C‐3 Synthons for the Synthesis of Functionalized 3‐Aminothiophenes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901512] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Sviatoslav Batsyts
- Department of Organic Chemistry Ivan Franko National University of Lviv Kyryla i Mefodiya Str. 6 79005 Lviv Ukraine
- Institute of Organic Chemistry Clausthal University of Technology Leibnizstrasse 6 38678 Clausthal‐Zellerfeld Germany
| | - Maksym Shehedyn
- Department of Organic Chemistry Ivan Franko National University of Lviv Kyryla i Mefodiya Str. 6 79005 Lviv Ukraine
| | - Evgeny A. Goreshnik
- Department of Inorganic Chemistry and Technology Jozef Stefan Institute Jamova 39 1000 Ljubljana Slovenia
| | - Mykola D. Obushak
- Department of Organic Chemistry Ivan Franko National University of Lviv Kyryla i Mefodiya Str. 6 79005 Lviv Ukraine
| | - Andreas Schmidt
- Institute of Organic Chemistry Clausthal University of Technology Leibnizstrasse 6 38678 Clausthal‐Zellerfeld Germany
| | - Yurii V. Ostapiuk
- Department of Organic Chemistry Ivan Franko National University of Lviv Kyryla i Mefodiya Str. 6 79005 Lviv Ukraine
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