1
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Yam VWW, Cheng YH. Stimuli-Responsive and Switchable Platinum(II) Complexes and Their Applications in Memory Storage. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20220034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Yat-Hin Cheng
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
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2
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Yuan QZ, Wan FS, Shen TT, Cao DK. Two cyclometalated Pt( ii) complexes showing reversible phosphorescence switching due to grinding-induced destruction and crystallization-induced formation of supramolecular dimer structure. RSC Adv 2022; 12:148-153. [PMID: 35424484 PMCID: PMC8978655 DOI: 10.1039/d1ra07142d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 12/14/2021] [Indexed: 01/12/2023] Open
Abstract
Two Pt(ii) complexes 1 and 2 reveal similar supramolecular dimer structure, in which two [Pt(dfppy/ppy)(pbdtmi)]+ cations connect each other through the π⋯π stacking interaction. Thus these complexes show reversible phosphorescence switching by grinding and crystallization with toluene.
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Affiliation(s)
- Qin-Zhen Yuan
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Fu-Shun Wan
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Ting-Ting Shen
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Deng-Ke Cao
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
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3
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Abstract
Photoswitchable catalysis using organometallic complexes: a ligand design perspective.
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Affiliation(s)
- Zoraida Freixa
- Department of Applied Chemistry
- University of the Basque Country (UPV-EHU)
- San Sebastián
- Spain
- IKERBASQUE
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4
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Lvov AG, Mörtel M, Yadykov AV, Heinemann FW, Shirinian VZ, Khusniyarov MM. Photochromic diarylethene ligands featuring 2-(imidazol-2-yl)pyridine coordination site and their iron(II) complexes. Beilstein J Org Chem 2019; 15:2428-2437. [PMID: 31666877 PMCID: PMC6808200 DOI: 10.3762/bjoc.15.235] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 09/27/2019] [Indexed: 12/29/2022] Open
Abstract
A new family of photochromic diarylethene-based ligands bearing a 2-(imidazol-2-yl)pyridine coordination unit has been developed. Four members of the new family have been synthesized. The photoactive ligands feature non-aromatic ethene bridges (cyclopentene, cyclopentenone, and cyclohexenone), as well as closely spaced photoactive and metal coordination sites aiming a strong impact of photocyclization on the electronic structure of the coordinated metal ion. The ligands with cyclopentenone and cyclohexenone bridges show good cycloreversion quantum yields of 0.20-0.32. The thermal stability of closed-ring isomers reveals half-lives of up to 20 days in solution at room temperature. The ligands were used to explore coordination chemistry with iron(II) targeting photoswitchable spin-crossover complexes. Unexpectedly, dinuclear and tetranuclear iron(II) complexes were obtained, which were thoroughly characterized by X-ray crystallography, magnetic measurements, and Mössbauer spectroscopy. The formation of multinuclear complexes is facilitated by two coordination sites of the diarylethene, acting as a bridging ligand. The bridging nature of the diarylethene in the complexes prevents photocyclization.
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Affiliation(s)
- Andrey G Lvov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47, Leninsky prosp., 119991 Moscow, Russian Federation
| | - Max Mörtel
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
| | - Anton V Yadykov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47, Leninsky prosp., 119991 Moscow, Russian Federation
| | - Frank W Heinemann
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
| | - Valerii Z Shirinian
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47, Leninsky prosp., 119991 Moscow, Russian Federation
| | - Marat M Khusniyarov
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
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5
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Theoretical exploration of second-order nonlinear optical properties of mono- and bimetallic Pt(II) dithienylcyclopentene complexes: Ligands and photoisomerization effect. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.03.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Lvov AG, Khusniyarov MM, Shirinian VZ. Azole-based diarylethenes as the next step towards advanced photochromic materials. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2018. [DOI: 10.1016/j.jphotochemrev.2018.04.002] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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7
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Ko CC, Yam VWW. Coordination Compounds with Photochromic Ligands: Ready Tunability and Visible Light-Sensitized Photochromism. Acc Chem Res 2018; 51:149-159. [PMID: 29265804 DOI: 10.1021/acs.accounts.7b00426] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Photochromic compounds are well-known for their promising applications in many areas. In this context, many different photochromic families have been developed. As the early study of these photochromic compounds was mainly focused on the organic system, their photochromic reactivity was mainly derived from the singlet excited state. We hypothesized that the incorporation of the photochromic ligand to the transition metal complex and coordination complex systems would not only render the triplet state of the organic photochromic system more readily accessible due to the large spin-orbit coupling of the heavy metal center but also would lead to ready extension of the excitation wavelength to less destructive longer wavelength low-energy excitation. On the other hand, the long-lived triplet excited states of the metal complexes are also suitable for energy or electron transfer processes, which should lead to new photochromic behavior and photoswitchable functional properties. Through the incorporation of the stilbene-, azo-, spirooxazine-, and dithienylethene-containing ligands to transition metal complex systems with heavy metal centers and suitable excited states, triplet state photosensitized photochromism has been achieved. With the triplet state photosensitization, the photochromism of these compounds could be extended from the high energy UV region to the visible region. In the development of dithienylethene-containing ligands, we have adopted an alternative strategy, which involves the incorporation of nitrogen and sulfur heterocycles that directly form part of the dithienylethene framework as ligands to exert a much stronger perturbation and influence on the excited state properties of the photochromic unit by the metal center. On the basis of the new design, wide ranges of dithienylethene-containing ligands, including phenanthrolines, 2-pyridylimidazoles, N-pyridylimidazol-2-ylidenes, cyclometalating thienylpyridines, β-diketonates, and β-ketoiminates have been designed and incorporated into various coordination systems. Apart from the photosensitization, tuning of the closed form absorption and photochromic behavior based on the perturbation of the metal center, coordination-assisted planarization, modification of the ancillary ligands and introduction of various electronic excited states derived from the coordination system have been successfully demonstrated. This strategy can be used for developing NIR photochromic dithienylethenes. With the above effects observed upon the coordination to different transition metal centers and central atoms, this strategy offers a simple and effective way for the modification of the photochromic characteristics. Moreover, the emission and other functional properties of the coordination systems could also be photoswitched by the photochromic reactions.
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Affiliation(s)
- Chi-Chiu Ko
- Institute
of Molecular Functional Materials (Areas of Excellence Scheme, University
Grants Committee (Hong Kong)) and Department
of Chemistry, The University of Hong Kong, Pokfulam Road, Pokfulam, Hong Kong, P. R. China
- Department
of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P. R. China
| | - Vivian Wing-Wah Yam
- Institute
of Molecular Functional Materials (Areas of Excellence Scheme, University
Grants Committee (Hong Kong)) and Department
of Chemistry, The University of Hong Kong, Pokfulam Road, Pokfulam, Hong Kong, P. R. China
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8
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Wu NMW, Ng M, Lam WH, Wong HL, Yam VWW. Photochromic Heterocycle-Fused Thieno[3,2-b]phosphole Oxides as Visible Light Switches without Sacrificing Photoswitching Efficiency. J Am Chem Soc 2017; 139:15142-15150. [DOI: 10.1021/jacs.7b08333] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Nathan Man-Wai Wu
- Institute of Molecular Functional
Materials [Areas of Excellence Scheme, University Grant Committee
(Hong Kong)] and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Maggie Ng
- Institute of Molecular Functional
Materials [Areas of Excellence Scheme, University Grant Committee
(Hong Kong)] and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Wai Han Lam
- Institute of Molecular Functional
Materials [Areas of Excellence Scheme, University Grant Committee
(Hong Kong)] and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Hok-Lai Wong
- Institute of Molecular Functional
Materials [Areas of Excellence Scheme, University Grant Committee
(Hong Kong)] and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional
Materials [Areas of Excellence Scheme, University Grant Committee
(Hong Kong)] and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
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9
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Kanazawa R, Nakashima T, Kawai T. Photophysical Properties of a Terarylene Photoswitch with a Donor–Acceptor Conjugated Bridging Unit. J Phys Chem A 2017; 121:1638-1646. [DOI: 10.1021/acs.jpca.7b00296] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Rui Kanazawa
- Graduate
School of Materials Science, Nara Institute of Science and Technology, NAIST, Ikoma, Nara 630-0192, Japan
| | - Takuya Nakashima
- Graduate
School of Materials Science, Nara Institute of Science and Technology, NAIST, Ikoma, Nara 630-0192, Japan
| | - Tsuyoshi Kawai
- Graduate
School of Materials Science, Nara Institute of Science and Technology, NAIST, Ikoma, Nara 630-0192, Japan
- NAIST-CEMES
International Collaborative Laboratory for Supraphotoactive System, Cebtre d’Élaboration de Matériaux et d’Etudes Structurales, CEMES, 29, rue Jeanne Marvig, BP 94347, Toulouse 31055, France
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10
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Chan MHY, Wong HL, Yam VWW. Synthesis and Photochromic Studies of Dithienylethene-Containing Cyclometalated Alkynylplatinum(II) 1,3-Bis(N-alkylbenzimidazol-2′-yl)benzene Complexes. Inorg Chem 2016; 55:5570-7. [DOI: 10.1021/acs.inorgchem.6b00619] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael Ho-Yeung Chan
- Institute of Molecular Functional Materials (Areas of
Excellence Scheme, University Grants Committee (Hong Kong)) and Department
of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong
| | - Hok-Lai Wong
- Institute of Molecular Functional Materials (Areas of
Excellence Scheme, University Grants Committee (Hong Kong)) and Department
of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials (Areas of
Excellence Scheme, University Grants Committee (Hong Kong)) and Department
of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong
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11
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Gong DP, Cao DK. Heteroleptic Ir(iii) and Pt(ii) complexes based on 2-(2,4-difluorophenyl)-pyridine and bisthienylethene BrLH: the influence of the metal center on structures, luminescence and photochromism. Dalton Trans 2016; 45:9328-35. [DOI: 10.1039/c6dt01175f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Based on bisthienylethene BrLH, [Ir(dfppy)2(BrL)]·3CH3OH (1) and [Pt(dfppy)(BrL)]·CH3OH (2) have been prepared. The two complexes are significantly different in structure, luminescence and photochromic behavior, due to their different metal centers.
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Affiliation(s)
- Dan-Ping Gong
- State Key Laboratory of Coordination Chemistry
- Coordination Chemistry Institute
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Deng-Ke Cao
- State Key Laboratory of Coordination Chemistry
- Coordination Chemistry Institute
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
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12
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Gong DP, Gao TB, Cao DK, Ward MD. Bisthienylethenes containing an imidazole bridge unit and their Ir(iii) complexes: influence of substituent groups on photochromism and luminescence. RSC Adv 2016. [DOI: 10.1039/c6ra14555h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
This work reports the syntheses of tBuLH and tBuLMeH, and their complexes [Ir(dfppy)2(tBuL)]·2CH3OH (1) and Ir(dfppy)2(tBuLMe)] (2), and the influence of substituent groups –C(CH3)3 and –CH3 on their photochromic and luminescence behaviors.
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Affiliation(s)
- Dan-Ping Gong
- State Key Laboratory of Coordination Chemistry
- Coordination Chemistry Institute
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Tai-Bao Gao
- State Key Laboratory of Coordination Chemistry
- Coordination Chemistry Institute
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Deng-Ke Cao
- State Key Laboratory of Coordination Chemistry
- Coordination Chemistry Institute
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Michael D. Ward
- Department of Chemistry
- University of Sheffield
- Sheffield S3 7HF
- UK
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13
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Tang D, Guo X, Wang Y, Wang J, Li J, Huang Q, Chen B. Metal free, I2-catalyzed [3+1+1] cycloaddition reactions to synthesize 1,2,4-trisubstituted imidazoles. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.09.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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14
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Chan JCH, Wong HL, Wong WT, Yam VWW. Tunable Photochromism in the Robust Dithienylethene-Containing Phospholes: Design, Synthesis, Characterization, Electrochemistry, Photophysics, and Photochromic Studies. Chemistry 2015; 21:6936-48. [DOI: 10.1002/chem.201405691] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 02/03/2015] [Indexed: 11/11/2022]
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15
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Walkey MC, Byrne LT, Piggott MJ, Low PJ, Koutsantonis GA. Enhanced bi-stability in a ruthenium alkynyl spiropyran complex. Dalton Trans 2015; 44:8812-5. [DOI: 10.1039/c5dt01107h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Attachment of a ruthenium alkynyl unit to a spiropyran ligand extends the lifetime of the merocyanine form of the complex more than twenty-fold.
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Affiliation(s)
- Mark C. Walkey
- School of Chemistry and Biochemistry
- University of Western Australia
- Crawley
- Australia
| | - Lindsay T. Byrne
- School of Chemistry and Biochemistry
- University of Western Australia
- Crawley
- Australia
- Centre for Microscopy
| | - Matthew J. Piggott
- School of Chemistry and Biochemistry
- University of Western Australia
- Crawley
- Australia
| | - Paul J. Low
- School of Chemistry and Biochemistry
- University of Western Australia
- Crawley
- Australia
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16
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Chan JCH, Lam WH, Yam VWW. A Highly Efficient Silole-Containing Dithienylethene with Excellent Thermal Stability and Fatigue Resistance: A Promising Candidate for Optical Memory Storage Materials. J Am Chem Soc 2014; 136:16994-7. [DOI: 10.1021/ja5101855] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Jacky Chi-Hung Chan
- Institute of Molecular Functional
Materials (Areas of Excellence Scheme, University Grants Committee
(Hong Kong)) and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Wai Han Lam
- Institute of Molecular Functional
Materials (Areas of Excellence Scheme, University Grants Committee
(Hong Kong)) and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional
Materials (Areas of Excellence Scheme, University Grants Committee
(Hong Kong)) and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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