1
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Nascimento MA, LaPierre EA, Patrick BO, Watson JET, Watanabe L, Rawson J, Hering-Junghans C, Manners I. 1,3-Dipolar cyclisation reactions of nitriles with sterically encumbered cyclic triphosphanes: synthesis and electronic structure of phosphorus-rich heterocycles with tunable colour. Chem Sci 2024; 15:12006-12016. [PMID: 39092099 PMCID: PMC11290424 DOI: 10.1039/d4sc02497d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Accepted: 06/10/2024] [Indexed: 08/04/2024] Open
Abstract
We describe the synthesis, solid state and electronic structures of a series of tunable five-membered cationic and charge-neutral inorganic heterocycles featuring a P3CN core. 1-Aza-2,3,4-triphospholenium cations [(PR)3N(H)CR']+, [1R]+ (R' = Me, Ph, 4-MeOC6H4, 4-CF3C6H4) were formed as triflate salts by the formal [3 + 2]-cyclisation reactions of strained cyclic triphosphanes (PR)3 (R = t Bu, 2,4,6-Me3C6H2 (Mes), 2,6- i Pr2C6H3 (Dipp), 2,4,6- i Pr3C6H2 (Tipp)) with nitriles R'CN in the presence of triflic acid. The corresponding neutral free bases (PR)3NCR' (2R) were readily obtained by subsequent deprotonation with NEt3. The P3CN cores in 2R show an envelope conformation typical for cyclopentenes and present as yellow to orange compounds in the solid state as well as in solution depending on both substituents R and R' in (PR)3NCR'. The P3CN cores in [1R]+ show a significant deviation from planarity with increasing steric bulk of the R groups at phosphorus, which results in a decrease in the HOMO-LUMO gap and distinct low-energy UV-Visible absorption bands. This allows access to colours spanning red, blue, indigo, and magenta. TD-DFT calculations provide valuable insight into this phenomenon and indicate an intramolecular charge-transfer from the HOMO located on the P3 framework to the N[double bond, length as m-dash]C-R'-based LUMO in the cationic species. The cations [1R]+ represent rare examples of phosphorus-rich heterocycles with tunable colour, which can be incorporated into polymers by post-polymerization modification to afford coloured polymers, which demonstrate utility as both proton and ammonia sensors.
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Affiliation(s)
- Mitchell A Nascimento
- Department of Chemistry, University of Victoria 3800 Finnerty Rd Victoria British Columbia V8P 5C2 Canada
| | - Etienne A LaPierre
- Department of Chemistry, University of Victoria 3800 Finnerty Rd Victoria British Columbia V8P 5C2 Canada
| | - Brian O Patrick
- Department of Chemistry, University of British Columbia 2036 Main Mall Vancouver British Columbia V6T 1Z1 Canada
| | - Jade E T Watson
- Department of Chemistry, University of Victoria 3800 Finnerty Rd Victoria British Columbia V8P 5C2 Canada
| | - Lara Watanabe
- Department of Chemistry and Biochemistry, University of Windsor 401 Sunset Avenue Windsor Ontario N9B 3P4 Canada
| | - Jeremy Rawson
- Department of Chemistry and Biochemistry, University of Windsor 401 Sunset Avenue Windsor Ontario N9B 3P4 Canada
| | - Christian Hering-Junghans
- Leibniz Institut für Katalyse e.V. (LIKAT) A.-Einstein-Str.3a 18059 Rostock Germany
- Institut für Chemie, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2 39106 Magdeburg Germany
| | - Ian Manners
- Department of Chemistry, University of Victoria 3800 Finnerty Rd Victoria British Columbia V8P 5C2 Canada
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2
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Goual N, Maisonneuve S, Retailleau P, Xie J, Marinetti A, Voituriez A. Synthesis and Characterization of a [1,2,6]Diazaphosphonine Oxide: An Example of a Photoswitchable Phosphorus-Containing Cyclic Azobenzene. J Org Chem 2024; 89:5098-5103. [PMID: 38452258 DOI: 10.1021/acs.joc.3c02450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
We report herein the synthesis and characterization of a phosphorus-containing cyclic azobenzene as a new photoswitchable scaffold. This backbone reveals high bidirectional photoswitching yields and high thermal stability for both isomers, with t1/2 > 90 days at 60 °C. Both E- and Z-isomers have been characterized by UV-vis spectroscopy and X-ray crystallography.
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Affiliation(s)
- Nawel Goual
- CNRS, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Stéphane Maisonneuve
- ENS Paris-Saclay, CNRS, PPSM, Université Paris-Saclay, 91190 Gif-sur-Yvette, France
| | - Pascal Retailleau
- CNRS, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Juan Xie
- ENS Paris-Saclay, CNRS, PPSM, Université Paris-Saclay, 91190 Gif-sur-Yvette, France
| | - Angela Marinetti
- CNRS, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Arnaud Voituriez
- CNRS, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, UPR 2301, 91198 Gif-sur-Yvette, France
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3
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Kelly JA, Streitferdt V, Dimitrova M, Westermair FF, Gschwind RM, Berger RJF, Wolf R. Transition-Metal-Stabilized Heavy Tetraphospholide Anions. J Am Chem Soc 2022; 144:20434-20441. [DOI: 10.1021/jacs.2c08754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- John A. Kelly
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Verena Streitferdt
- Institute of Organic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Maria Dimitrova
- Department of Chemistry, Faculty of Science, University of Helsinki, FI-00014 University of Helsinki, Finland
| | - Franz F. Westermair
- Institute of Organic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Ruth M. Gschwind
- Institute of Organic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Raphael J. F. Berger
- Department for Chemistry and Physics of Materials, Paris-Lodron University Salzburg, 5020 Salzburg, Austria
| | - Robert Wolf
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
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4
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Fung TH, Ng M, Wu NM, Yam VW. Dithienylethene‐Containing Cyclometalated Platinum(II) Complexes with Tunable Photochromic and Photophysical Properties. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tony Ho‐Ching Fung
- Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Maggie Ng
- Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Nathan Man‐Wai Wu
- Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Vivian Wing‐Wah Yam
- Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
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5
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Fung THC, Wong CL, Tang WK, Leung MY, Low KH, Yam VWW. Photochromic dithienylethene-containing four-coordinate boron(III) compounds with a spirocyclic scaffold. Chem Commun (Camb) 2022; 58:4231-4234. [PMID: 35288724 DOI: 10.1039/d2cc00107a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A new series of four-coordinate boron compounds bearing a photochromic dithienylethene-containing C^C ligand and an ancillary N^C ligand have been successfully designed and synthesised. These compounds exhibit reversible photochromism upon photoexcitation with percentage conversions of 71-96% and readily tuneable photocycloreversion quantum yields by convenient modification of the ancillary ligand to turn on the thermally activated upconversion from the lower-lying unreactive excited state to the higher-lying photoreactive excited state.
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Affiliation(s)
- Tony Ho-Ching Fung
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
| | - Cheok-Lam Wong
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
| | - Wai-Kit Tang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
| | - Ming-Yi Leung
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
| | - Kam-Hung Low
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
| | - Vivian Wing-Wah Yam
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
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6
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Wu NMW, Ng M, Yam VWW. Photocontrolled multiple-state photochromic benzo[b]phosphole thieno[3,2-b]phosphole-containing alkynylgold(I) complex via selective light irradiation. Nat Commun 2022; 13:33. [PMID: 35013225 PMCID: PMC8748877 DOI: 10.1038/s41467-021-27711-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 11/30/2021] [Indexed: 01/04/2023] Open
Abstract
Photochromic materials have drawn growing attention because using light as a stimulus has been regarded as a convenient and environmental-friendly way to control properties of smart materials. While photoresponsive systems that are capable of showing multiple-state photochromism are attractive, the development of materials with such capabilities has remained a challenging task. Here we show that a benzo[b]phosphole thieno[3,2‑b]phosphole-containing alkynylgold(I) complex features multiple photoinduced color changes, in which the gold(I) metal center plays an important role in separating two photoactive units that leads to the suppression of intramolecular quenching processes of the excited states. More importantly, the exclusive photochemical reactivity of the thieno[3,2‑b]phosphole moiety of the gold(I) complex can be initiated upon photoirradiation of visible light. Stepwise photochromism of the gold(I) complex has been made possible, offering an effective strategy for the construction of multiple-state photochromic materials with multiple photocontrolled states to enhance the storage capacity of potential optical memory devices.
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Affiliation(s)
- Nathan Man-Wai Wu
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Maggie Ng
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China.
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7
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Verchozina YA, Lvov AG. Effect of incorporation of silole and phosphole heterocycles into photoswitchable diarylethenes. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2021.122151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Li JZ, Mei L, Yu XC, Wang LT, Cai XE, Li T, Wei WT. C-centered radical-initiated cyclization by directed C(sp 3)–H oxidative functionalization. Org Chem Front 2022. [DOI: 10.1039/d2qo01128j] [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
C(sp3)–H functionalization is attracting constant attention. This review emphasizes C-centered radicals initiated cyclization strategies by directed C(sp3)–H oxidative functionalization since 2012.
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Affiliation(s)
- Jiao-Zhe Li
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Lan Mei
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Xuan-Chi Yu
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Ling-Tao Wang
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Xue-Er Cai
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Ting Li
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan, 473061, China
| | - Wen-Ting Wei
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
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9
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Tang S, An J, Song F, Lv M, Han K, Peng X. Extending the Legible Time of Light-Responsive Rewritable Papers with a Tunable Photochromic Diarylethene Molecule. ACS APPLIED MATERIALS & INTERFACES 2021; 13:51414-51425. [PMID: 34689563 DOI: 10.1021/acsami.1c11841] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Inkless printing based on rewritable papers has recently made great progress because it can improve the utilization rate of papers, which is of great significance for saving resources and protecting the environment. Among them, light-responsive rewritable papers (LRPs) are a hot research topic because light is clean, easily available, wavelength and intensity adjustable, and noncontacting. However, the photochromic material, as the imaging substance of LRPs, is easily affected by environmental conditions, resulting in insufficient time to read the information. In view of this, we designed and constructed an acid/base tunable diarylethene molecular system that can effectively adjust the photochromic properties by reversibly changing the electron density of the diarylethene photoreaction center through protonation and demonstrated its potential as an imaging material with a longer legible time. What makes us more satisfied is that the acidification can not only extend the legible time of carrying information but also bring a clear and stable absorption/fluorescence imaging dual mode, which can better reflect details and improve contrast. Therefore, we believe that this tunable photochromic diarylethene molecule is a potential imaging material for the development of new LRPs.
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Affiliation(s)
- Shanliang Tang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Jing An
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Fengling Song
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, China
| | - Meiheng Lv
- College of Applied Chemistry, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Keli Han
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, China
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
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10
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Devillard M, Nour Eddine N, Cordier M, Alcaraz G. Dithienylethene‐Based Photochromic Siloles: A Straightforward and Divergent Synthetic Strategy. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102540] [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)
- Marc Devillard
- ISCR (Institut des Sciences Chimiques de Rennes)—, UMR 6226 Univ Rennes CNRS 35000 Rennes France
| | - Nour Nour Eddine
- ISCR (Institut des Sciences Chimiques de Rennes)—, UMR 6226 Univ Rennes CNRS 35000 Rennes France
| | - Marie Cordier
- ISCR (Institut des Sciences Chimiques de Rennes)—, UMR 6226 Univ Rennes CNRS 35000 Rennes France
| | - Gilles Alcaraz
- ISCR (Institut des Sciences Chimiques de Rennes)—, UMR 6226 Univ Rennes CNRS 35000 Rennes France
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11
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Devillard M, Nour Eddine N, Cordier M, Alcaraz G. Dithienylethene-Based Photochromic Siloles: A Straightforward and Divergent Synthetic Strategy. Angew Chem Int Ed Engl 2021; 60:12356-12359. [PMID: 33740313 DOI: 10.1002/anie.202102540] [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: 02/19/2021] [Revised: 03/16/2021] [Indexed: 11/11/2022]
Abstract
A straightforward synthetic methodology for the preparation of photochromic siloles based on the dithienylethene motif is developed. It relies upon an efficient palladium-catalyzed annulation reaction of a 2,3-bis(3-thienyl)-silirene with terminal alkynes in mild conditions. The reaction is functional group-tolerant and can be performed in high yields with a variety of functional terminal alkynes. It can even be extended to a polymeric polypropargylmethacrylamide (PPMA) substrate affording the corresponding photochromic polymer with different degree of photochromic unit incorporation by simply adjusting the polymer/ silirene stoichiometric ratio.
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Affiliation(s)
- Marc Devillard
- ISCR (Institut des Sciences Chimiques de Rennes)-, UMR 6226, Univ Rennes, CNRS, 35000, Rennes, France
| | - Nour Nour Eddine
- ISCR (Institut des Sciences Chimiques de Rennes)-, UMR 6226, Univ Rennes, CNRS, 35000, Rennes, France
| | - Marie Cordier
- ISCR (Institut des Sciences Chimiques de Rennes)-, UMR 6226, Univ Rennes, CNRS, 35000, Rennes, France
| | - Gilles Alcaraz
- ISCR (Institut des Sciences Chimiques de Rennes)-, UMR 6226, Univ Rennes, CNRS, 35000, Rennes, France
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12
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Ishijima K, Tanaka S, Imoto H, Naka K. 2,3-Diarylbenzo[b]arsole: Structural Modification and Polymerization for Tuning of Photophysical Properties. Chemistry 2021; 27:4676-4682. [PMID: 33415783 DOI: 10.1002/chem.202005001] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/20/2020] [Indexed: 11/09/2022]
Abstract
2,3-Diarylbenzo[b]arsoles were synthesized from zirconacycles and diiodophenylarsine. The structural modification to the luminophore was attained through diarylacetylene precursors, Suzuki-Miyaura coupling, and oxidation of the arsenic atom. The emission properties were controlled according to these modifications. The 2,3-diarylbenzo[b]arsoles showed aggregation-induced emission enhancement; the stronger emission was observed in the solid states than in solutions. In addition, Suzuki-Miyaura polycondensation and olefin metathesis polymerization produced main- and side-chain polymers, respectively. The resultant polymers showed different emission behaviors such as aggregation caused quenching and aggregation induced emission enhancement.
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Affiliation(s)
- Kosuke Ishijima
- Faculty of Molecular Chemistry and Engineering, Graduate School of, Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Susumu Tanaka
- Faculty of Molecular Chemistry and Engineering, Graduate School of, Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Graduate School of, Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan.,Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Graduate School of, Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan.,Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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13
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Ishijima K, Tanaka S, Imoto H, Naka K. 2-Arylbenzo[ b]arsoles: an experimental and computational study on the relationship between structural and photophysical properties. Dalton Trans 2020; 49:15612-15621. [PMID: 32966454 DOI: 10.1039/d0dt02669g] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Benzo[b]arsole derivatives, being arsenic analogues of indole, were synthesized by utilizing a safely prepared arsenic precursor. The structural and photophysical properties of the obtained 2-arylbenzo[b]arsoles were experimentally and computationally studied in comparison with those of 1,2,5-triarylarsoles and 9-phenylarsafluorene. It was found that the emission color and/or quantum yield were significantly affected by substituents on the luminescent center and metal-coordination to the arsenic atom. This is the first study on the structure-property relationship of benzo[b]arsole derivatives.
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Affiliation(s)
- Kosuke Ishijima
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Gashokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Susumu Tanaka
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Gashokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Gashokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan. and Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Gashokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan. and Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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14
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Wong CL, Cheng YH, Poon CT, Yam VWW. Synthesis, Photophysical, Photochromic, and Photomodulated Resistive Memory Studies of Dithienylethene-Containing Copper(I) Diimine Complexes. Inorg Chem 2020; 59:14785-14795. [PMID: 32914626 DOI: 10.1021/acs.inorgchem.0c02089] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of dithienylethene-containing copper(I) diimine complexes have been synthesized and structurally characterized. Systematic studies on their photophysics, electrochemistry, and photochromism have been carried out. The photoinduced color changes of the copper(I) complexes have been achieved by photoexcitation into the metal-to-ligand charge-transfer (MLCT) absorption bands, indicating the photosensitization of light-induced cyclization by the 3MLCT excited state. In addition, by an increase in either the steric bulkiness around the copper(I) center or the structural rigidity of the complexes, the quantum efficiencies of photoluminescence and photocyclization can be effectively enhanced because of suppression of the flattening distortion of the complexes at the MLCT excited state. Furthermore, one of the complexes has been employed as an active component in the fabrication of solution-processed resistive memory devices. Notable lowering of the switching threshold voltage of the binary memory devices has been realized through photocyclization of the dithienylethene-containing copper(I) system.
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Affiliation(s)
- Cheok-Lam Wong
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Yat-Hin Cheng
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Chun-Ting Poon
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Vivian Wing-Wah Yam
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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15
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Sponza AD, Liu D, Chen EP, Shaw A, Diawara L, Chiu M. Synthesis strategies for non-symmetric, photochromic diarylethenes. Org Biomol Chem 2020; 18:7238-7252. [PMID: 32926036 DOI: 10.1039/d0ob01556c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Diarylethenes (DAEs) represent an important class of photochromes with notable characteristics, like thermally irreversible photoisomerization and high fatigue resistance. Structural diversification of the DAE scaffold has enabled further refinement of photochromic properties and realization of new applications, ranging from advanced materials to tools for studying biological systems. In particular, methods for synthesizing non-symmetric DAE scaffolds, which are typically more challenging to synthesize than their symmetric counterparts, have grown over the past 20 years. These developments are surveyed in this review, with discussion of how access to these compounds has contributed to the improvement of photochromic properties and paved the way for exploring new applications of DAEs. First, non-symmetric DAE structures are classified and their uses and applications are overviewed. Subsequent sections discuss the main strategies that have been used to access non-symmetric DAEs with examples illustrating the impact of non-symmetric DAEs in the growing field of light-controlled molecular systems.
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Affiliation(s)
- Alvaro D Sponza
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Di Liu
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Emily P Chen
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Allison Shaw
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Lassana Diawara
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Melanie Chiu
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
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16
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Liu H, Gao H, Wang S, Yao S, Wu F, Zhao Y, Chan KS, Shen Z. Regulation of an Ambient-Light-Induced Photocyclization Pathway (Norrish-Yang Versus 6π) by Substituent Choice. Chemistry 2020; 26:12418-12430. [PMID: 32372418 DOI: 10.1002/chem.202000990] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/28/2020] [Indexed: 12/12/2022]
Abstract
Photocyclization, irrespective of whether multiple steps (e.g., Norrish-Yang cyclization) or a single concerted step (e.g., 6π photocyclization) are involved, is an intramolecular photochemical process resulting in the formation of one new single bond to afford a ring system. In particular, visible-light-induced photocyclization offers a green and sustainable route to organic cyclic compounds that are difficult to access by thermal reactions. Herein, we describe the ambient light-induced intramolecular photocyclization of a series of donor/acceptor chromophores 1 d-3 d containing two types of photoresponsive motifs, namely an electron-deficient BF2 -chelated ketone fused with an electron-rich thiophene, and probe the solution-phase and solid-state photochromic performance of these compounds. The results reveal that simple variation of R substituents on the diaryl moiety allows one to control the intramolecular photocyclization mechanism with high photochemical selectivity, e.g., under ambient light, methyl-substituted 1 d and 2 d undergo reversible 6π photocyclization, whereas ethyl-substituted 3 d exclusively undergoes irreversible Norrish-Yang photocyclization. Single-crystal X-ray analysis of Norrish-Yang cyclization products reveals the formation of four pairs of conformational enantiomers differing in the dihedral angle between benzothiophene and the BF2 core, namely (±)N-3 d@68°, (±)N-3 d@-77°, (±)N-3 d@-78°, and (±)N-3 d@-102°. The UV/Vis absorption spectra of 1 d-3 d cover a broad visible-light region (380-572 nm), while DFT and TD-DFT calculations reveal that absorption in this region is dominated by the charge-transfer (CT) transition from the thiophene-centered HOMO to the LUMO of the electron-deficient π-conjugated BF2 -chelated unit and the n→π* and π→π* transitions within the latter unit. The spatial separation of the HOMO and LUMO of these dyes promotes triplet-state generation and self-photosensitizes intramolecular photocyclization in the visible-light region. Three-dimensional time-resolved and steady-state emission spectra of 3 d show that the Norrish-Yang photocyclization takes place within milliseconds with excellent conversion efficiency (96 %).
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Affiliation(s)
- Hui Liu
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering Nanjing University, Nanjing, 210046, P. R. China
| | - Hu Gao
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering Nanjing University, Nanjing, 210046, P. R. China
| | - Sisi Wang
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering Nanjing University, Nanjing, 210046, P. R. China
| | - Shengxin Yao
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering Nanjing University, Nanjing, 210046, P. R. China
| | - Fan Wu
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering Nanjing University, Nanjing, 210046, P. R. China
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering Nanjing University, Nanjing, 210046, P. R. China
| | - Kin Shing Chan
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering Nanjing University, Nanjing, 210046, P. R. China
| | - Zhen Shen
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering Nanjing University, Nanjing, 210046, P. R. China
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17
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Wong CL, Ng M, Hong EYH, Wong YC, Chan MY, Yam VWW. Photoresponsive Dithienylethene-Containing Tris(8-hydroxyquinolinato)aluminum(III) Complexes with Photocontrollable Electron-Transporting Properties for Solution-Processable Optical and Organic Resistive Memory Devices. J Am Chem Soc 2020; 142:12193-12206. [DOI: 10.1021/jacs.0c03057] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Cheok-Lam Wong
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Maggie Ng
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Eugene Yau-Hin Hong
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Yi-Chun Wong
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Mei-Yee Chan
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Vivian Wing-Wah Yam
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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18
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Xu Z, Liu QT, Wang X, Liu Q, Hean D, Chou KC, Wolf MO. Quinoline-containing diarylethenes: bridging between turn-on fluorescence, RGB switching and room temperature phosphorescence. Chem Sci 2020; 11:2729-2734. [PMID: 34084331 PMCID: PMC8157510 DOI: 10.1039/c9sc05697a] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Accepted: 01/31/2020] [Indexed: 01/08/2023] Open
Abstract
Simple structural modifications using oxidation and methylation of a quinoline-containing diarylethene result in dramatic variation of photophysical properties. Turn-on fluorescence, room temperature phosphorescence (RTP) and red-green-blue (RGB) switching were achieved in three different related compounds. Photoswitchable diarylethenes (DAEs) that exhibit turn-on fluorescence are in high demand for super-resolution microscopy, and the development of purely organic phosphorescent materials in the amorphous state is attractive but challenging. The findings reported here provide a novel toolkit for designing turn-on fluorescence DAEs for super-resolution microscopy and extending the scope of amorphous RTP materials. More importantly, we bridge between these two fundamentally significant photochemical and photophysical phenomena, and reveal structure-property relationships between DAE photochromism and RTP.
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Affiliation(s)
- Zhen Xu
- Department of Chemistry, University of British Columbia 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Qian T Liu
- Department of Chemistry, University of British Columbia 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Xiaozhu Wang
- Department of Chemistry, University of British Columbia 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Qian Liu
- Department of Chemistry, University of British Columbia 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Duane Hean
- Department of Chemistry, University of British Columbia 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Keng C Chou
- Department of Chemistry, University of British Columbia 2036 Main Mall Vancouver BC V6T 1Z1 Canada
| | - Michael O Wolf
- Department of Chemistry, University of British Columbia 2036 Main Mall Vancouver BC V6T 1Z1 Canada
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19
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Ma L, Li C, Yan Q, Wang S, Miao W, Cao D. Unsymmetrical photochromic bithienylethene-bridge tetraphenylethene molecular switches: Synthesis, aggregation-induced emission and information storage. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.07.040] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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20
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Wu NMW, Yam VWW. Photochromic Barbiturate Pendant-Containing Benzo[ b]phosphole Oxides with Co-Assembly Property and Photoinduced Morphological Changes. ACS APPLIED MATERIALS & INTERFACES 2019; 11:40290-40299. [PMID: 31633321 DOI: 10.1021/acsami.9b13900] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A series of novel barbiturate pendant-containing benzo[b]phosphole oxides has been demonstrated to exhibit photochromic and co-assembly properties. Both the open form and the photogenerated closed form of the diarylethene-based benzo[b]phosphole oxides have displayed color changes with new appearance of the bathochromic-shifted lowest-energy absorption bands upon addition of the H-bonding ditopic receptor that is complementary to the barbiturate groups, probably resulting in the formation of a supramolecular polymer. The co-assembly mixtures have displayed dissociation and association processes upon heating and cooling, respectively. Moreover, both the unassembled and co-assembled states of the benzo[b]phosphole oxide have exhibited photoinduced coloration, leading to a near-infrared absorption behavior. Multiaddressable states of the co-assembly mixture with multiple colors have been achieved via the combination of photochromism and thermochromism. More interestingly, photoinduced morphological changes from extensive porous network structures to ring-like aggregates have been observed for the co-assembly upon photoirradiation. The present work provides important insight for further developments of the multiaddressable systems and the supramolecular polymers with photo- and thermo-responsive behaviors, paving the way for the future design of photochromic materials with interesting photocontrollable functions.
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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
| | - 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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21
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Belyaev A, Chen Y, Liu Z, Hindenberg P, Wu C, Chou P, Romero‐Nieto C, Koshevoy IO. Intramolecular Phosphacyclization: Polyaromatic Phosphonium P-Heterocycles with Wide-Tuning Optical Properties. Chemistry 2019; 25:6332-6341. [PMID: 30791177 PMCID: PMC6594060 DOI: 10.1002/chem.201900136] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Indexed: 01/08/2023]
Abstract
Rationally designed cationic phospha-polyaromatic fluorophores were prepared through intramolecular cyclization of the tertiary ortho-(acene)phenylene-phosphines mediated by CuII triflate. As a result of phosphorus quaternization, heterocyclic phosphonium salts 1 c-3 c, derived from naphthalene, phenanthrene, and anthracene cores, exhibited very intense blue to green fluorescence (Φem =0.38-0.99) and high photostability in aqueous medium. The structure-emission relationship was further investigated by tailoring the electron-donating functions to the anthracene moiety to give dyes 4 c-6 c with charge-transfer character. The latter significantly decreases the emission energy to reach near-IR region. Thus, the intramolecular phosphacyclization renders an ultra-wide tuning of fluorescence from 420 nm (1 c) to 780 nm (6 c) in solution, extended to 825 nm for 6 c in the solid state with quantum efficiency of approximately 0.07. The physical behavior of these new dyes was studied spectroscopically, crystallographically, and electrochemically, whereas computational analysis was used to correlate the experimental data with molecular electronic structures. The excellent stability, water solubility, and attractive photophysical characteristics make these phosphonium heterocycles powerful tools in cell imaging.
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Affiliation(s)
- Andrey Belyaev
- Department of ChemistryUniversity of Eastern FinlandYliopistokatu 780101JoensuuFinland
| | - Yi‐Ting Chen
- Department of ChemistryNational (Taiwan) UniversityTaipei106Taiwan
| | - Zong‐Ying Liu
- Department of ChemistryNational (Taiwan) UniversityTaipei106Taiwan
| | - Philip Hindenberg
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Cheng‐Ham Wu
- Department of ChemistryNational (Taiwan) UniversityTaipei106Taiwan
| | - Pi‐Tai Chou
- Department of ChemistryNational (Taiwan) UniversityTaipei106Taiwan
| | - Carlos Romero‐Nieto
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
- Faculty of PharmacyUniversity of Castilla-La ManchaCalle Almansa 14 - Edif. Bioincubadora02008AlbaceteSpain
| | - Igor O. Koshevoy
- Department of ChemistryUniversity of Eastern FinlandYliopistokatu 780101JoensuuFinland
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22
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Tsurusaki A, Matsumoto H, Kamikawa K. Dibenzo[b,e]phosphindolizines synthesized by a ring-closing metathesis of benzo[b]phospholes with two vinyl tethers. Chem Commun (Camb) 2019; 55:4909-4912. [PMID: 30892322 DOI: 10.1039/c9cc00463g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Dibenzo[b,e]phosphindolizines 1 were successfully synthesized by a ring-closing metathesis of benzo[b]phosphole chalcogenides 2a-2c with two vinyl tethers (for chalcogen analogs 1a-1c), and by a deselenization reaction (for lone-pair analog 1d). The structures, properties, and bowl inversion derived from a phosphorus atom were fully investigated.
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Affiliation(s)
- Akihiro Tsurusaki
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan.
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23
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Wu NM, Ng M, Yam VW. Photochromic Benzo[
b
]phosphole Alkynylgold(I) Complexes with Mechanochromic Property to Serve as Multistimuli‐Responsive Materials. Angew Chem Int Ed Engl 2019; 58:3027-3031. [DOI: 10.1002/anie.201806272] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 06/30/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Nathan Man‐Wai Wu
- Institute of Molecular Functional Materials, Areas of Excellence Scheme, University Grants Committee (Hong Kong) andDepartment of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Maggie Ng
- Institute of Molecular Functional Materials, Areas of Excellence Scheme, University Grants Committee (Hong Kong) andDepartment of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Vivian Wing‐Wah Yam
- Institute of Molecular Functional Materials, Areas of Excellence Scheme, University Grants Committee (Hong Kong) andDepartment of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong P. R. China
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24
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Photochromic Benzo[
b
]phosphole Alkynylgold(I) Complexes with Mechanochromic Property to Serve as Multistimuli‐Responsive Materials. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806272] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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25
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Xu Z, Cao Y, Patrick BO, Wolf MO. Photoswitching of Copper(I) Chromophores with Dithienylethene-Based Ligands. Chemistry 2018; 24:10315-10319. [DOI: 10.1002/chem.201801940] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 05/28/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Zhen Xu
- Department of Chemistry; University of British Columbia; Vancouver British Columbia Canada
| | - Yang Cao
- Department of Chemistry; University of British Columbia; Vancouver British Columbia Canada
| | - Brian O. Patrick
- Department of Chemistry; University of British Columbia; Vancouver British Columbia Canada
| | - Michael O. Wolf
- Department of Chemistry; University of British Columbia; Vancouver British Columbia Canada
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26
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Wan H, Xue H, Ling Y, Qiao Y, Chen Y, Zhou G. Electron donor and acceptor functionalized dithienylethenes: effects of charge density on photochromic properties. Phys Chem Chem Phys 2018; 20:14348-14356. [PMID: 29766171 DOI: 10.1039/c8cp02238k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electron-donating triphenylamine and/or electron-withdrawing pyromellitic diimide (PMDI) are functionalized on dithienylethene (DTE) and three novel photochromic materials have been designed and successfully synthesized. All the compounds display reversible photochromism due to the molecular switching between ring-closed isomers upon UV light irradiation and ring-open isomers upon exposure to visible light. Thus they can be applied as an anti-counterfeiting ink. Moreover, the study of the photoswitching kinetics reveals that both the ring-closing and ring-opening reactions are first-order reactions. Further charge population analysis discovers that the electron densities of the substituents at the DTE core have a dramatic influence on the photochromic properties. The incorporation of electron-donating triphenylamine groups at the α-position of the thiophene rings in the DTE unit facilitates the ring-closing reaction upon UV light irradiation. In contrast, the substitution of an electron-withdrawing PMDI unit in the DTE unit is beneficial to the ring-opening reaction upon irradiation of visible light. This work may help to understand the photochromism of DTE derivatives and provide a pathway for designing DTE-based photochromes with more or less sensitivity to UV or visible light.
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Affiliation(s)
- Hao Wan
- Lab of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai 200438, P. R. China.
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27
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Budnikova YH. Transition metal-promoted reactions of diarylphosphine oxides as a synthetic method for organophosphorus heterocyclic compounds. Chem Heterocycl Compd (N Y) 2018. [DOI: 10.1007/s10593-018-2261-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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28
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Cheung AFF, Hong EYH, Yam VWW. Supramolecular Assembly of Phosphole Oxide Based Alkynylplatinum(II) 2,6-Bis(N-alkylbenzimidazol-2'-yl)pyridine Complexes-An Interplay of Hydrophobicity and Aromatic π-Surfaces. Chemistry 2018; 24:1383-1393. [PMID: 29266490 DOI: 10.1002/chem.201704110] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Indexed: 01/27/2023]
Abstract
A new class of phosphole oxide based alkynylplatinum(II) 2,6-bis(N-alkylbenzimidazol-2'-yl)pyridine (bzimpy) complexes were synthesized and characterized. Their self-assembly was driven by hydrophobic-hydrophobic and π-π stacking interactions. The self-assembly properties were also investigated by UV/Vis absorption spectroscopy, which revealed that the alkyl-chain length of the bzimpy moiety and the π-surface area of the alkynyl ligand have significant influence on the overall self-assembly process. The alkyl-chain length also affected the morphological structures of the aggregates, which were studied by transmission electron microscopy and scanning electron microscopy.
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Affiliation(s)
- Andy Fu-Fai Cheung
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Eugene Yau-Hin Hong
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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29
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Chen JX, Wang JY, Zhang QC, Chen ZN. Multiphotochromism in an Asymmetric Ruthenium Complex with Two Different Dithienylethenes. Inorg Chem 2017; 56:13257-13266. [PMID: 28985081 DOI: 10.1021/acs.inorgchem.7b02023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
An asymmetric bis(dithienylethene-acetylide) ruthenium(II) complex trans-Ru(dppe)2(L1o)(L2o) (1oo) incorporating two different dithienylethene-acetylides (L1o and L2o) was designed to modulate multistate photochromism in view of the well separated ring-closing absorption bands between L1o and L2o. Upon irradiation with appropriate wavelengths of light, complex 1 undergoes stepwise photocyclization and selective photocycloreversion to afford four states (1oo, 1co, 1oc, and 1cc). As a contrast, symmetric complexes trans-Ru(dppe)2(L1o)2 (2oo) and trans-Ru(dppe)2(L2o)2 (3oo) with two identical dithienylethene-acetylides were synthesized, and the corresponding photochromic behavior was investigated. The photochromic properties of the oxidized species (1oo+/1co+/1oc+/1cc+, 2oo+/2co+/2cc+, and 3oo+/3co+/3cc+) were also investigated. The ring-closing absorption bands of one-electron oxidized species 1oo+, 2oo+, and 3oo+ show obvious blue shifts relative to those of 1oo, 2oo, and 3oo, respectively. The ring-closing absorption bands in both neutral and oxidized species grow progressively following oo → oc/co → cc and oo+ → oc+/co+ → cc+. As revealed by spectroscopic, electrochemical, and computational studies, complex 1 displays eight switchable states through stepwise photocyclization, selective cycloreversion, and a reversible redox process.
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Affiliation(s)
- Jin-Xiang Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West, Fuzhou 350002, China
| | - Jin-Yun Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West, Fuzhou 350002, China
| | - Qian-Chong Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West, Fuzhou 350002, China
| | - Zhong-Ning Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West, Fuzhou 350002, China.,College of Chemistry and Materials Science, Fujian Normal University , Fuzhou, Fujian 350007, China
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30
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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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31
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Ulrich S, Hemmer JR, Page ZA, Dolinski ND, Rifaie-Graham O, Bruns N, Hawker CJ, Boesel LF, Read de Alaniz J. Visible Light-Responsive DASA-Polymer Conjugates. ACS Macro Lett 2017; 6:738-742. [PMID: 35650854 DOI: 10.1021/acsmacrolett.7b00350] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A modular synthesis of Donor-Acceptor Stenhouse Adduct (DASA) polymer conjugates is described. Pentafluorophenyl-ester chemistry is employed to incorporate aromatic amines into acrylate and methacrylate copolymers, which are subsequently coupled with activated furans to generate polymers bearing a range of DASA units in a modular manner. The effect of polymer glass transition temperature on switching kinetics is studied, showing dramatic rate enhancements in going from a glassy to a rubbery matrix. Moreover, tuning the DASA absorption profile allows for selective switching, as demonstrated by ternary photopatterning, with potential applications in rewriteable data storage.
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Affiliation(s)
- Sebastian Ulrich
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
- Adolphe
Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | | | | | | | - Omar Rifaie-Graham
- Adolphe
Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Nico Bruns
- Adolphe
Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | | | - Luciano F. Boesel
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
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32
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Mellerup SK, Häfele L, Lorbach A, Wang X, Wang S. Triplet Energy and π-Conjugation Effects on Photoisomerization of Chiral N,C-Chelate Organoborons with PAH Substituents. Org Lett 2017; 19:3851-3854. [DOI: 10.1021/acs.orglett.7b01724] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Soren K. Mellerup
- Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Lisa Häfele
- Department
of Chemistry, Universität Konstanz, 78457 Konstanz, Germany
| | - Andreas Lorbach
- Department
of Chemistry, Universität Konstanz, 78457 Konstanz, Germany
| | - Xiang Wang
- Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Suning Wang
- Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
- Beijing
Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials,
School of Chemistry, Beijing Institute of Technology, Beijing 1000081, P. R. China
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33
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Wong CL, Poon CT, Yam VWW. Photoresponsive Organogelator: Utilization of Boron(III) Diketonate as a Building Block To Construct Multiresponsive Materials. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00274] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cheok-Lam 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, People’s Republic of China
| | - Chun-Ting Poon
- 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, People’s Republic of 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, People’s Republic of China
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Belyaev A, Chen YT, Su SH, Tseng YJ, Karttunen AJ, Tunik SP, Chou PT, Koshevoy IO. Copper-mediated phospha-annulation to attain water-soluble polycyclic luminophores. Chem Commun (Camb) 2017; 53:10954-10957. [DOI: 10.1039/c7cc06882d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The P-heterocyclic fluorophores, obtained via Cu(ii)-mediated cyclization, are suitable for cell imaging due to their stability, water solubility and low toxicity.
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Affiliation(s)
- Andrey Belyaev
- University of Eastern Finland
- Department of Chemistry
- Joensuu
- Finland
| | - Yi-Ting Chen
- National Taiwan University
- Department of Chemistry
- Taipei 106
- Taiwan
| | - Shih-Hao Su
- National Taiwan University
- Department of Chemistry
- Taipei 106
- Taiwan
| | - Yu-Jui Tseng
- National Taiwan University
- Department of Chemistry
- Taipei 106
- Taiwan
| | - Antti J. Karttunen
- Aalto University
- Department of Chemistry and Materials Science
- Aalto
- Finland
| | | | - Pi-Tai Chou
- National Taiwan University
- Department of Chemistry
- Taipei 106
- Taiwan
| | - Igor O. Koshevoy
- University of Eastern Finland
- Department of Chemistry
- Joensuu
- Finland
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