1
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Wu SH, Zhang Z, Zheng RH, Yang R, Wang L, Shao JY, Gong ZL, Zhong YW. Dual-Emissive Monoruthenium Complexes of N(CH 3)-Bridged Ligand: Synthesis, Characterization, and Substituent Effect. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6792. [PMID: 37895773 PMCID: PMC10607950 DOI: 10.3390/ma16206792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/13/2023] [Accepted: 10/19/2023] [Indexed: 10/29/2023]
Abstract
Three monoruthenium complexes 1(PF6)2-3(PF6)2 bearing an N(CH3)-bridged ligand have been synthesized and characterized. These complexes have a general formula of [Ru(bpy)2(L)](PF6)2, where L is a 2,5-di(N-methyl-N'-(pyrid-2-yl)amino)pyrazine (dapz) derivative with various substituents, and bpy is 2,2'-bipyridine. The photophysical and electrochemical properties of these compounds have been examined. The solid-state structure of complex 3(PF6)2 is studied by single-crystal X-ray analysis. These complexes show two well-separated emission bands centered at 451 and 646 nm (Δλmax = 195 nm) for 1(PF6)2, 465 and 627 nm (Δλmax = 162 nm) for 2(PF6)2, and 455 and 608 nm (Δλmax = 153 nm) for 3(PF6)2 in dilute acetonitrile solution, respectively. The emission maxima of the higher-energy emission bands of these complexes are similar, while the lower-energy emission bands are dependent on the electronic nature of substituents. These complexes display two consecutive redox couples owing to the stepwise oxidation of the N(CH3)-bridged ligand and ruthenium component. Moreover, these experimental observations are analyzed by computational investigation.
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Affiliation(s)
- Si-Hai Wu
- School of Medicine, Huaqiao University, Quanzhou 362021, China; (Z.Z.); (R.-H.Z.); (R.Y.)
| | - Zhe Zhang
- School of Medicine, Huaqiao University, Quanzhou 362021, China; (Z.Z.); (R.-H.Z.); (R.Y.)
| | - Ren-Hui Zheng
- School of Medicine, Huaqiao University, Quanzhou 362021, China; (Z.Z.); (R.-H.Z.); (R.Y.)
| | - Rong Yang
- School of Medicine, Huaqiao University, Quanzhou 362021, China; (Z.Z.); (R.-H.Z.); (R.Y.)
| | - Lianhui Wang
- School of Medicine, Huaqiao University, Quanzhou 362021, China; (Z.Z.); (R.-H.Z.); (R.Y.)
| | - Jiang-Yang Shao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (J.-Y.S.); (Y.-W.Z.)
| | - Zhong-Liang Gong
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (J.-Y.S.); (Y.-W.Z.)
| | - Yu-Wu Zhong
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (J.-Y.S.); (Y.-W.Z.)
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2
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Kurahashi T. Variation of the Emission Efficiency and Wavelength from Fluorescent Zinc Salen Complexes upon Systematic Structural Modifications. ACS OMEGA 2022; 7:30642-30654. [PMID: 36061697 PMCID: PMC9435038 DOI: 10.1021/acsomega.2c04714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 08/08/2022] [Indexed: 05/14/2023]
Abstract
Understanding the photophysical properties of metal salen complexes is not straightforward because the emission efficiency is altered irregularly upon structural modifications. The present study prepared zinc salen complexes with systematic structural variations to pinpoint critical factors to determine the emission efficiency. One of the important experimental observations is the regiochemistry of a phenolate substituent affecting emission efficiency from a salicylidene fluorophore, which is nicely assigned as arising from the photoexcited electronic structure of metal salen complexes. Another significant finding is the thermal fluctuation of a salen ligand arising from the mismatched ligand-metal interaction, which has a significant impact on fluorescence lifetime. The present study sheds light on hidden factors that alter photophysical properties of a metal salen complex, which provide valuable insights into designing new photoactive salen ligands.
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3
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Mubarok H, Kwak SW, Lee JH, Hwang H, Lee KM, Kim Y, Lee MH, Park MH. Effect of bridging units on the photophysical properties of
4‐NEt
2
‐appended salen−indium complexes. B KOREAN CHEM SOC 2022. [DOI: 10.1002/bkcs.12603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hanif Mubarok
- Department of Chemistry University of Ulsan Ulsan Republic of Korea
| | - Sang Woo Kwak
- Department of Chemistry Education Chungbuk National University Cheongju Chungbuk Republic of Korea
| | - Ji Hye Lee
- Department of Chemistry Institute for Molecular Science and Fusion Technology, Kangwon National University Chuncheon Gangwon Republic of Korea
| | - Hyonseok Hwang
- Department of Chemistry Institute for Molecular Science and Fusion Technology, Kangwon National University Chuncheon Gangwon Republic of Korea
| | - Kang Mun Lee
- Department of Chemistry Institute for Molecular Science and Fusion Technology, Kangwon National University Chuncheon Gangwon Republic of Korea
| | - Youngjo Kim
- Department of Chemistry Chungbuk National University Cheongju Chungbuk Republic of Korea
| | - Min Hyung Lee
- Department of Chemistry University of Ulsan Ulsan Republic of Korea
| | - Myung Hwan Park
- Department of Chemistry Education Chungbuk National University Cheongju Chungbuk Republic of Korea
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4
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Kwak SW, Mubarok H, Lee JH, Hwang H, Lee KM, Lee MH, Park MH. Highly red-emissive salen–indium complexes: impact of 4-amino-substitution on the photophysical properties. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01337h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
4-NR2-appended salen–indium complexes were prepared via a one-pot synthetic pathway. The complexes exhibited narrow-bandwidth red emissions with high photoluminescence quantum yields that are the highest among the reported salen-based luminophores.
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Affiliation(s)
- Sang Woo Kwak
- Department of Chemistry Education, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Hanif Mubarok
- Department of Chemistry, University of Ulsan, Ulsan 44610, Republic of Korea
| | - Ji Hye Lee
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Hyonseok Hwang
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Kang Mun Lee
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Min Hyung Lee
- Department of Chemistry, University of Ulsan, Ulsan 44610, Republic of Korea
| | - Myung Hwan Park
- Department of Chemistry Education, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
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5
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Ferger M, Berger SM, Rauch F, Schönitz M, Rühe J, Krebs J, Friedrich A, Marder TB. Synthesis of Highly Functionalizable Symmetrically and Unsymmetrically Substituted Triarylboranes from Bench-Stable Boron Precursors. Chemistry 2021; 27:9094-9101. [PMID: 33844337 PMCID: PMC8360097 DOI: 10.1002/chem.202100632] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Indexed: 02/04/2023]
Abstract
A novel and convenient methodology for the one-pot synthesis of sterically congested triarylboranes by using bench-stable aryltrifluoroborates as the boron source is reported. This procedure gives systematic access to symmetrically and unsymmetrically substituted triarylboranes of the types BAr2 Ar' and BArAr'Ar'', respectively. Three unsymmetrically substituted triarylboranes as well as their iridium-catalyzed C-H borylation products are reported. These borylated triarylboranes contain one to three positions that can subsequently be orthogonally functionalized in follow-up reactions, such as Suzuki-Miyaura cross-couplings or Sonogashira couplings.
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Affiliation(s)
- Matthias Ferger
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Sarina M. Berger
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Florian Rauch
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Markus Schönitz
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Jessica Rühe
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Johannes Krebs
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Alexandra Friedrich
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Todd B. Marder
- Institut für Anorganische Chemie andInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
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6
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Woo WH, Lee SH, Kwak SW, Kim M, Lee KM, Park MH, Kim Y. Synthesis and Photophysical Properties of (
Cl
2
Ph
)Salen‐based Indium Complexes. B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.12062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Won Hee Woo
- Department of ChemistryChungbuk National University Cheongju Chungbuk 28644 Korea
| | - Seok Ho Lee
- Department of ChemistryInstitute for Molecular Science and Fusion Technology, Kangwon National University Chuncheon Gangwon 24341 Korea
| | - Sang Woo Kwak
- Department of ChemistryChungbuk National University Cheongju Chungbuk 28644 Korea
| | - Min Kim
- Department of ChemistryChungbuk National University Cheongju Chungbuk 28644 Korea
| | - Kang Mun Lee
- Department of ChemistryInstitute for Molecular Science and Fusion Technology, Kangwon National University Chuncheon Gangwon 24341 Korea
| | - Myung Hwan Park
- Department of Chemistry EducationChungbuk National University Cheongju Chungbuk 28644 Korea
| | - Youngjo Kim
- Department of ChemistryChungbuk National University Cheongju Chungbuk 28644 Korea
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7
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Nayeri S, Jamali S, Jamjah A, Shakirova JR, Tunik SP, Gurzhiy V, Samouei H, Shahsavari HR. Five- and Six-Coordinated Silver(I) Complexes Formed by a Metallomacrocyclic Ligand with a “Au2N2” Donor Group: Observation of Pendulum and Linear Motions and Dual Phosphorescence. Inorg Chem 2020; 59:5702-5712. [DOI: 10.1021/acs.inorgchem.0c00482] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Sara Nayeri
- Department of Chemistry, Sharif University of Technology, P.O. Box 11155-3516, Tehran, Iran
| | - Sirous Jamali
- Department of Chemistry, Sharif University of Technology, P.O. Box 11155-3516, Tehran, Iran
| | - Ali Jamjah
- Department of Chemistry, Sharif University of Technology, P.O. Box 11155-3516, Tehran, Iran
| | - Julia R. Shakirova
- Department of Chemistry, St. Petersburg State University, Universitetskii pr. 26, St. Petersburg 198504, Russia
| | - Sergey P. Tunik
- Department of Chemistry, St. Petersburg State University, Universitetskii pr. 26, St. Petersburg 198504, Russia
| | - Vladislav Gurzhiy
- Institute of Earth Sciences, St. Petersburg State University, St. Petersburg 199034, Russia
| | - Hamidreza Samouei
- Chemistry Department, Texas A&M University, PO Box 30012, College Station 77842-3012, Texas, United States
| | - Hamid R. Shahsavari
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
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8
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Sujith S, Nam EB, Lee J, Lee SU, Lee MH. Enhancing the thermally activated delayed fluorescence of nido-carborane-appended triarylboranes by steric modification of the phenylene linker. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00535e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The introduction of a methyl group into the 4-position of the phenylene linker of nido-carborane–triarylborane D–A dyads, i.e., at the ortho position to the nido-carborane cage, largely enhances their thermally activated delayed fluorescence.
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Affiliation(s)
- Surendran Sujith
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
| | - Eun Bi Nam
- Department of Bionano Technology and Department of Applied Chemistry
- Hanyang University
- Ansan 15588
- Republic of Korea
| | - Junseong Lee
- Department of Chemistry
- Chonnam National University
- Gwangju 61186
- Republic of Korea
| | - Sang Uck Lee
- Department of Bionano Technology and Department of Applied Chemistry
- Hanyang University
- Ansan 15588
- Republic of Korea
| | - Min Hyung Lee
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
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9
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Ryu CH, Kwak SW, Lee HW, Lee JH, Hwang H, Kim M, Chung Y, Kim Y, Park MH, Lee KM. Carbazole-Appended Salen–Indium Conjugate Systems: Synthesis and Enhanced Luminescence Efficiency. Inorg Chem 2019; 58:12358-12364. [DOI: 10.1021/acs.inorgchem.9b01948] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Chan Hee Ryu
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | | | | | - Ji Hye Lee
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Hyonseok Hwang
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | | | | | | | | | - Kang Mun Lee
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
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10
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Freire C, Nunes M, Pereira C, Fernandes DM, Peixoto AF, Rocha M. Metallo(salen) complexes as versatile building blocks for the fabrication of molecular materials and devices with tuned properties. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.05.014] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Kwak SW, Jin H, Lee JH, Hwang H, Kim M, Kim Y, Chung Y, Lee KM, Park MH. Systematic Control of the Overlapping Energy Region for an Efficient Intramolecular Energy Transfer: Functionalized Salen–Al/Triphenylamine Guest–Host Assemblies. Inorg Chem 2019; 58:2454-2462. [DOI: 10.1021/acs.inorgchem.8b03005] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Hyomin Jin
- Department of Chemistry and Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Ji Hye Lee
- Department of Chemistry and Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Hyonseok Hwang
- Department of Chemistry and Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | | | | | | | - Kang Mun Lee
- Department of Chemistry and Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
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12
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Lee JH, Ryu CH, Yu S, Hwang H, Lee KM. Quinolinol-based Al/Triarylborane Dyad Assembly: Alteration of Electronic Transition States Mediated by Fluoride Anion Binding. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11595] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ji Hye Lee
- Department of Chemistry; Institute for Molecular Science and Fusion Technology, Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Chan Hee Ryu
- Department of Chemistry; Institute for Molecular Science and Fusion Technology, Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Seokhyeon Yu
- Department of Chemistry; Institute for Molecular Science and Fusion Technology, Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Hyonseok Hwang
- Department of Chemistry; Institute for Molecular Science and Fusion Technology, Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Kang Mun Lee
- Department of Chemistry; Institute for Molecular Science and Fusion Technology, Kangwon National University; Chuncheon 24341 Republic of Korea
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13
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Nghia NV, Jana S, Sujith S, Ryu JY, Lee J, Lee SU, Lee MH. Nido-Carboranes: Donors for Thermally Activated Delayed Fluorescence. Angew Chem Int Ed Engl 2018; 57:12483-12488. [PMID: 30091167 DOI: 10.1002/anie.201806922] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 08/07/2018] [Indexed: 11/09/2022]
Abstract
An approach to the design of nido-carborane-based luminescent compounds that can exhibit thermally activated delayed fluorescence (TADF) is proposed. 7,8-Dicarba-nido-undecaboranes (nido-carboranes) having various 8-R groups (R=H, Me, i-Pr, Ph) are appended to the meta or para position of the phenyl ring of the dimesitylphenylborane (PhBMes2 ) acceptor, forming donor-acceptor compounds (nido-m1-m4 and nido-p1-p4). The bulky 8-R group and meta substitution of the nido-carborane are essential to attain a highly twisted arrangement between the donor and acceptor moieties, leading to a very small energy splitting between the singlet and triplet excited states (ΔEST <0.05 eV for nido-m2, -m3, and -p3). These compounds exhibit efficient TADF with microsecond-range lifetimes. In particular, nido-m2 and -m3 display aggregation-induced emission (AIE) with TADF properties.
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Affiliation(s)
- Nguyen Van Nghia
- Department of Chemistry and EHSRC, University of Ulsan, Ulsan, 44610, Republic of Korea
| | - Saibal Jana
- Department of Bionano Technology, Department of Chemical and Molecular Engineering, Hanyang University, Ansan, 15588, Republic of Korea
| | - Surendran Sujith
- Department of Chemistry and EHSRC, University of Ulsan, Ulsan, 44610, Republic of Korea
| | - Ji Yeon Ryu
- Department of Chemistry, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Sang Uck Lee
- Department of Bionano Technology, Department of Chemical and Molecular Engineering, Hanyang University, Ansan, 15588, Republic of Korea
| | - Min Hyung Lee
- Department of Chemistry and EHSRC, University of Ulsan, Ulsan, 44610, Republic of Korea
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14
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Nghia NV, Jana S, Sujith S, Ryu JY, Lee J, Lee SU, Lee MH. Nido
-Carboranes: Donors for Thermally Activated Delayed Fluorescence. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806922] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Nguyen Van Nghia
- Department of Chemistry and EHSRC; University of Ulsan; Ulsan 44610 Republic of Korea
| | - Saibal Jana
- Department of Bionano Technology; Department of Chemical and Molecular Engineering; Hanyang University; Ansan 15588 Republic of Korea
| | - Surendran Sujith
- Department of Chemistry and EHSRC; University of Ulsan; Ulsan 44610 Republic of Korea
| | - Ji Yeon Ryu
- Department of Chemistry; Chonnam National University; Gwangju 61186 Republic of Korea
| | - Junseong Lee
- Department of Chemistry; Chonnam National University; Gwangju 61186 Republic of Korea
| | - Sang Uck Lee
- Department of Bionano Technology; Department of Chemical and Molecular Engineering; Hanyang University; Ansan 15588 Republic of Korea
| | - Min Hyung Lee
- Department of Chemistry and EHSRC; University of Ulsan; Ulsan 44610 Republic of Korea
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15
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Kwak SW, Jin H, Shin H, Lee JH, Hwang H, Lee J, Kim M, Chung Y, Kim Y, Lee KM, Park MH. A salen-Al/carbazole dyad-based guest-host assembly: enhancement of luminescence efficiency via intramolecular energy transfer. Chem Commun (Camb) 2018; 54:4712-4715. [PMID: 29682672 DOI: 10.1039/c8cc01528g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A novel class of salen-Al/carbazole dyads (D1 and D2) was synthesized and fully identified. The emission spectra of the dyads presented intriguing dual-emission patterns via an intramolecular energy transfer (IET) state in solution. Furthermore, the IET feature of the dyads was clearly observed in the rigid state. Interestingly, the emission efficiency of the dyads was enhanced by the significant IET process from the carbazole group to the salen-Al moiety. Particularly, D1 exhibited a nearly three-fold enhanced luminescence efficiency compared to the corresponding mononuclear aluminum complexes (A1). Such an emission process of these guest-host systems was further supported by theoretical calculation.
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Affiliation(s)
- Sang Woo Kwak
- Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea.
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16
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Phenoxazinone synthase activity of two iron(III) complexes comprising the same Schiff base ligand: Biomimetic functional model and mechanistic investigation. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.01.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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17
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Wu SH, Shao JY, Gong ZL, Chen N, Zhong YW. Tuning the dual emissions of a monoruthenium complex with a dangling coordination site by solvents, O2, and metal ions. Dalton Trans 2018; 47:292-297. [DOI: 10.1039/c7dt04198e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A monoruthenium complex with a dangling coordination site shows solvent-, O2-, and metal ion-modulated dual fluorescence and phosphorescence emissions.
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Affiliation(s)
- Si-Hai Wu
- School of Biomedical Sciences
- Huaqiao University
- Quanzhou
- China
| | - Jiang-Yang Shao
- CAS Key Laboratory of Photochemistry
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Zhong-Liang Gong
- CAS Key Laboratory of Photochemistry
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Na Chen
- School of Biomedical Sciences
- Huaqiao University
- Quanzhou
- China
| | - Yu-Wu Zhong
- CAS Key Laboratory of Photochemistry
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
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