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Clark JA, Kusy D, Vakuliuk O, Krzeszewski M, Kochanowski KJ, Koszarna B, O'Mari O, Jacquemin D, Gryko DT, Vullev VI. The magic of biaryl linkers: the electronic coupling through them defines the propensity for excited-state symmetry breaking in quadrupolar acceptor-donor-acceptor fluorophores. Chem Sci 2023; 14:13537-13550. [PMID: 38033901 PMCID: PMC10685337 DOI: 10.1039/d3sc03812b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 11/04/2023] [Indexed: 12/02/2023] Open
Abstract
Charge transfer (CT) is key for molecular photonics, governing the optical properties of chromophores comprising electron-rich and electron-deficient components. In photoexcited dyes with an acceptor-donor-acceptor or donor-acceptor-donor architecture, CT breaks their quadrupolar symmetry and yields dipolar structures manifesting pronounced solvatochromism. Herein, we explore the effects of electronic coupling through biaryl linkers on the excited-state symmetry breaking of such hybrid dyes composed of an electron-rich core, i.e., 1,4-dihydropyrrolo[3,2-b]pyrrole (DHPP), and pyrene substituents that can act as electron acceptors. Experimental and theoretical studies reveal that strengthening the donor-acceptor electronic coupling decreases the CT rates and the propensity for symmetry breaking. We ascribe this unexpected result to effects of electronic coupling on the CT thermodynamics, which in its turn affects the CT kinetics. In cases of intermediate electronic coupling, the pyrene-DHPP conjugates produce fluorescence spectra, spreading over the whole visible range, that in addition to the broad CT emission, show bands from the radiative deactivation of the locally excited states of the donor and the acceptors. Because the radiative deactivation of the low-lying CT states is distinctly slow, fluorescence from upper locally excited states emerge leading to the observed anti-Kasha behaviour. As a result, these dyes exhibit white fluorescence. In addition to demonstrating the multifaceted nature of the effects of electronic coupling on CT dynamics, these chromophores can act as broad-band light sources with practical importance for imaging and photonics.
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Affiliation(s)
- John A Clark
- Department of Bioengineering, University of California Riverside, 900 University Ave. Riverside CA 92521 USA
| | - Damian Kusy
- Institute of Organic Chemistry, Polish Academy of Sciences Kasprzaka 44-52 01-224 Warsaw Poland
| | - Olena Vakuliuk
- Institute of Organic Chemistry, Polish Academy of Sciences Kasprzaka 44-52 01-224 Warsaw Poland
| | - Maciej Krzeszewski
- Institute of Organic Chemistry, Polish Academy of Sciences Kasprzaka 44-52 01-224 Warsaw Poland
| | - Krzysztof J Kochanowski
- Institute of Organic Chemistry, Polish Academy of Sciences Kasprzaka 44-52 01-224 Warsaw Poland
| | - Beata Koszarna
- Institute of Organic Chemistry, Polish Academy of Sciences Kasprzaka 44-52 01-224 Warsaw Poland
| | - Omar O'Mari
- Department of Bioengineering, University of California Riverside, 900 University Ave. Riverside CA 92521 USA
| | - Denis Jacquemin
- Nantes Université, CNRS CEISAM UMR 6230 F-44000 Nantes France
- Institut Universitaire de France (IUF) F-75005 Paris France
| | - Daniel T Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences Kasprzaka 44-52 01-224 Warsaw Poland
| | - Valentine I Vullev
- Department of Bioengineering, University of California Riverside, 900 University Ave. Riverside CA 92521 USA
- Department of Chemistry, University of California Riverside CA 92521 USA
- Department of Biochemistry, University of California Riverside CA 92521 USA
- Materials Science and Engineering Program, University of California Riverside CA 92521 USA
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2
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Ito A, Iwamura M, Sakuda E. Excited-state dynamics of luminescent transition metal complexes with metallophilic and donor–acceptor interactions. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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Dimitriev OP. Dynamics of Excitons in Conjugated Molecules and Organic Semiconductor Systems. Chem Rev 2022; 122:8487-8593. [PMID: 35298145 DOI: 10.1021/acs.chemrev.1c00648] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The exciton, an excited electron-hole pair bound by Coulomb attraction, plays a key role in photophysics of organic molecules and drives practically important phenomena such as photoinduced mechanical motions of a molecule, photochemical conversions, energy transfer, generation of free charge carriers, etc. Its behavior in extended π-conjugated molecules and disordered organic films is very different and very rich compared with exciton behavior in inorganic semiconductor crystals. Due to the high degree of variability of organic systems themselves, the exciton not only exerts changes on molecules that carry it but undergoes its own changes during all phases of its lifetime, that is, birth, conversion and transport, and decay. The goal of this review is to give a systematic and comprehensive view on exciton behavior in π-conjugated molecules and molecular assemblies at all phases of exciton evolution with emphasis on rates typical for this dynamic picture and various consequences of the above dynamics. To uncover the rich variety of exciton behavior, details of exciton formation, exciton transport, exciton energy conversion, direct and reverse intersystem crossing, and radiative and nonradiative decay are considered in different systems, where these processes lead to or are influenced by static and dynamic disorder, charge distribution symmetry breaking, photoinduced reactions, electron and proton transfer, structural rearrangements, exciton coupling with vibrations and intermediate particles, and exciton dissociation and annihilation as well.
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Affiliation(s)
- Oleg P Dimitriev
- V. Lashkaryov Institute of Semiconductor Physics NAS of Ukraine, pr. Nauki 41, Kyiv 03028, Ukraine
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4
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Bevernaegie R, Wehlin SAM, Elias B, Troian‐Gautier L. A Roadmap Towards Visible Light Mediated Electron Transfer Chemistry with Iridium(III) Complexes. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202000255] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Robin Bevernaegie
- Laboratoire de Chimie Organique CP160/06 Université libre de Bruxelles 50 avenue F. R. Roosevelt 1050 Brussels Belgium
- Institut de la Matière Condensée et des Nanosciences (IMCN) Molecular Chemistry, Materials and Catalysis (MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 box L4.01.02 1348 Louvain-la-Neuve Belgium
| | - Sara A. M. Wehlin
- Laboratoire de Chimie Organique CP160/06 Université libre de Bruxelles 50 avenue F. R. Roosevelt 1050 Brussels Belgium
| | - Benjamin Elias
- Institut de la Matière Condensée et des Nanosciences (IMCN) Molecular Chemistry, Materials and Catalysis (MOST) Université catholique de Louvain (UCLouvain) Place Louis Pasteur 1 box L4.01.02 1348 Louvain-la-Neuve Belgium
| | - Ludovic Troian‐Gautier
- Laboratoire de Chimie Organique CP160/06 Université libre de Bruxelles 50 avenue F. R. Roosevelt 1050 Brussels Belgium
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5
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Zanetti‐Polzi L, Djemili R, Durot S, Heitz V, Daidone I, Ventura B. Allosteric Control of Naphthalene Diimide Encapsulation and Electron Transfer in Porphyrin Containers: Photophysical Studies and Molecular Dynamics Simulation. Chemistry 2020; 26:17514-17524. [DOI: 10.1002/chem.202003151] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/24/2020] [Indexed: 12/20/2022]
Affiliation(s)
| | - Ryan Djemili
- Laboratoire de Synthèse des Assemblages Moléculaires Multifonctionnels Institut de Chimie de Strasbourg, CNRS/UMR 7177 Université de Strasbourg 4, rue Blaise Pascal 67000 Strasbourg France
| | - Stéphanie Durot
- Laboratoire de Synthèse des Assemblages Moléculaires Multifonctionnels Institut de Chimie de Strasbourg, CNRS/UMR 7177 Université de Strasbourg 4, rue Blaise Pascal 67000 Strasbourg France
| | - Valérie Heitz
- Laboratoire de Synthèse des Assemblages Moléculaires Multifonctionnels Institut de Chimie de Strasbourg, CNRS/UMR 7177 Université de Strasbourg 4, rue Blaise Pascal 67000 Strasbourg France
| | - Isabella Daidone
- Department of Physical and Chemical Sciences University of L'Aquila via Vetoio (Coppito 1) 67010 L'Aquila Italy
| | - Barbara Ventura
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF) Consiglio Nazionale delle Ricerche (CNR) Via P. Gobetti 101 40129 Bologna Italy
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6
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Bonesi SM, Protti S, Albini A. Photochemical Co-Oxidation of Sulfides and Phosphines with Tris(p-bromophenyl)amine. A Mechanistic Study. J Org Chem 2018; 83:8104-8113. [DOI: 10.1021/acs.joc.8b00913] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sergio M. Bonesi
- Departamento de Química Orgánica, CIHIDECAR-CONICET, 3er Piso, Pabellón 2, Ciudad Universitaria, FCEyN, University of Buenos Aires, Buenos Aires 1428, Argentina
- PhotoGreen Lab, Department of Chemistry, University of Pavia, V. leTaramelli 12, 27100 Pavia, Italy
| | - Stefano Protti
- PhotoGreen Lab, Department of Chemistry, University of Pavia, V. leTaramelli 12, 27100 Pavia, Italy
| | - Angelo Albini
- PhotoGreen Lab, Department of Chemistry, University of Pavia, V. leTaramelli 12, 27100 Pavia, Italy
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7
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Luo Y, Wächtler M, Barthelmes K, Winter A, Schubert US, Dietzek B. Coexistence of distinct intramolecular electron transfer pathways in polyoxometalate based molecular triads. Phys Chem Chem Phys 2018; 20:11740-11748. [PMID: 29651486 DOI: 10.1039/c8cp01007b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyoxometalate (POM)-associated charge-separated states, formed by the photoinduced oxidation of a covalently attached photosensitizer and reduction of the POM, have attracted much attention due to the remarkable catalytic properties of the reduced POMs. However, short lifetimes of the POM-associated charge-separated state, which in some cases lead to the backward electron transfer being more rapid than the formation of the charge-separated state itself, are generally observed. Recently, we reported on the first example of a relative long-lived (τ = 470 ns) charge-separated state in a Ru(ii) bis(terpyridine)-POM molecular dyad. In this manuscript, further studies on extended molecular structures - two molecular triads - which contain an additional electron donor, phenothiazine (PTZ) or π-extended tetrathiafulvalene (exTTF), are discussed. We show that the excitation of the photosensitizer leads to the population of two distinct MLCT states, which differ in the distribution of excess electron density on the two distinct tpy ligands. These two MLCT states decay separately and, thus, constitute the starting points for distinct intramolecular electron-transfer pathways leading to the simultaneous population of two partially charge-separated states, i.e. PTZ˙+-Ru(tpy)2˙--POM and PTZ-RuIII(tpy)2-POM˙-. These independent decay pathways are unaffected by the choice of the electron donor. Thus, the initial charge distribution within the coordination environment of the photocenter determines the nature of the subsequent (partially) charge separated state that is formed in the triads. These results might open new avenues to design molecular interfaces, in which the directionality of electron transfer can be tuned by the choice of initial excitation.
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Affiliation(s)
- Yusen Luo
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
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8
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Han WS, Veldkamp BS, Dyar SM, Eaton SW, Wasielewski MR. Photoinitiated long-lived charge separation with near-unity quantum yield in donor-acceptor1-acceptor2 systems for artificial photosynthesis. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Kimoto K, Satoh T, Iwamura M, Nozaki K, Horikoshi T, Suzuki S, Kozaki M, Okada K. Very Long-Lived Photoinduced Charge-Separated States of Triphenylamine–Naphthalenediimide Dyads in Polymer Matrices. J Phys Chem A 2016; 120:8093-8103. [DOI: 10.1021/acs.jpca.6b07705] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kenshi Kimoto
- Department
of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Tsubasa Satoh
- Department
of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Munetaka Iwamura
- Department
of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Koichi Nozaki
- Department
of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Takafumi Horikoshi
- Department
of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Shuichi Suzuki
- Department
of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Masatoshi Kozaki
- Department
of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Keiji Okada
- Department
of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
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10
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Takai A, Kajitani T, Fukushima T, Kishikawa K, Yasuda T, Takeuchi M. Supramolecular Assemblies of Ferrocene-Hinged Naphthalenediimides: Multiple Conformational Changes in Film States. J Am Chem Soc 2016; 138:11245-53. [PMID: 27564327 DOI: 10.1021/jacs.6b05824] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
We design a new naphthalenediimide (NDI) π-system, NDI-Fc-NDI, having a ferrocene linker as a hinge unit and long alkyl chains as supramolecular assembling units. The NDI units are "directionally flexible" in concert with the pivoting motion of the ferrocene unit with a small rotational barrier. The NDI units rotate around the ferrocene unit faster than the NMR time scale in solution at room temperature. UV-vis absorption, synchrotron X-ray diffraction, and atomic force microscope studies reveal that NDI-Fc-NDI forms a fibrous supramolecular assembly in solution (methylcyclohexane and highly concentrated chloroform) and film states, wherein the NDI units are in the slipped-stack conformation. The NDI-Fc-NDI supramolecular assembly in the film state exhibits multiple phase transitions associated with conformational changes at different temperatures, which are confirmed by differential scanning calorimetry, polarized optical microscopy, and temperature-dependent X-ray diffraction. Such thermal transitions of NDI-Fc-NDI films also induce changes in the optical and electronic properties as revealed by UV-vis absorption and photoelectron yield spectroscopies, respectively. The thermal behaviors of NDI-Fc-NDI, realized by the unique molecular design, are considerably different from the reference compounds such as an NDI dimer connected with a flexible 1,4-butylene linker. These results provide us with a plausible strategy to propagate the molecular dynamics of the π-system into macroscopic properties in film states; the key factors are (i) the supramolecular alignment of molecular switching units and (ii) the directional motion of the switching units perpendicular to the supramolecular axis.
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Affiliation(s)
- Atsuro Takai
- International Center for Young Scientists, Semiconductor Nano-interfaces Group, and Molecular Design & Function Group, National Institute for Materials Science (NIMS) , 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Takashi Kajitani
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.,RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
| | - Takanori Fukushima
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Keiki Kishikawa
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University , 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Takeshi Yasuda
- International Center for Young Scientists, Semiconductor Nano-interfaces Group, and Molecular Design & Function Group, National Institute for Materials Science (NIMS) , 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Masayuki Takeuchi
- International Center for Young Scientists, Semiconductor Nano-interfaces Group, and Molecular Design & Function Group, National Institute for Materials Science (NIMS) , 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
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11
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Yan W, Réthoré C, Menning S, Brenner-Weiß G, Muller T, Pierrat P, Bräse S. A Hexakis Terpyridine-Fullerene Ligand in Six-Fold Ruthenium, Iridium, and Iron Complexes: Synthesis and Electrochemical Properties. Chemistry 2016; 22:11522-6. [DOI: 10.1002/chem.201600796] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Weibo Yan
- Institute for Organic Chemistry and; DFG Center for Functional Nanostructures (CFN); Karlsruhe Institute of Technology (KIT), Campus South; Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | - Céline Réthoré
- Institute for Organic Chemistry and; DFG Center for Functional Nanostructures (CFN); Karlsruhe Institute of Technology (KIT), Campus South; Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | - Sebastian Menning
- Institute for Organic Chemistry and; DFG Center for Functional Nanostructures (CFN); Karlsruhe Institute of Technology (KIT), Campus South; Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | - Gerald Brenner-Weiß
- Institute of Functional Interfaces; Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Thierry Muller
- Clariant Innovation Center, Group for Technology & Innovation, Group for Chemical Research; Competence Center for Colorants & Functional Chemicals; Clariant Produkte (Deutschland) GmbH; Industriepark Höchst 65296 Frankfurt Germany
| | - Philippe Pierrat
- Structure et Réactivité des Systèmes Moléculaires Complexes; Université de Lorraine, UMR CNRS 7565; 1 Boulevard Arago 57070 Metz Technopôle France
| | - Stefan Bräse
- Institute for Organic Chemistry and; DFG Center for Functional Nanostructures (CFN); Karlsruhe Institute of Technology (KIT), Campus South; Fritz-Haber-Weg 6 76131 Karlsruhe Germany
- Institute for Toxicology and Genetics; Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
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12
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Flamigni L. Functional Arrays for Light Energy Capture and Charge Separation. CHEM REC 2016; 16:1067-81. [DOI: 10.1002/tcr.201500295] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Lucia Flamigni
- Istituto ISOF-CNR; Via P. Gobetti 101 40129 Bologna Italy
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13
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Kelber JB, Panjwani NA, Wu D, Gómez-Bombarelli R, Lovett BW, Morton JJL, Anderson HL. Synthesis and investigation of donor-porphyrin-acceptor triads with long-lived photo-induced charge-separate states. Chem Sci 2015; 6:6468-6481. [PMID: 30090266 PMCID: PMC6054115 DOI: 10.1039/c5sc01830g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 07/30/2015] [Indexed: 01/22/2023] Open
Abstract
Two donor-porphyrin-acceptor triads have been synthesized using a versatile Suzuki-coupling route. This synthetic strategy allows the powerful donor tetraalkylphenylenediamine (TAPD) to be introduced into tetraarylporphyrin-based triads without protection. The thermodynamics and kinetics of electron transfer in the new triads are compared with a previously reported octaalkyldiphenyl-porphyrin triad exhibiting a long-lived spin-polarized charge separate state (CSS), from theoretical and experimental perspectives, in both fluid solution and in a frozen solvent glass. We show that the less favorable oxidation potential of the tetraaryl-porphyrin core can be offset by using C60 , as a better electron-acceptor than triptycenenaphthoquinone (TNQ). The C60 -porphyrin-TAPD triad gives a spin-polarized charge-separated state that can be observed by EPR-spectroscopy, with a mean lifetime of 16 ms at 10 K, which is longer than in the previously reported TNQ-porphyrin-TAPD triad, following the predicted trend from calculated charge-recombination rates.
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Affiliation(s)
- Julien B Kelber
- Oxford University , Chemistry Research Laboratory , 12 Mansfield Road , OX1 3TA , Oxford , UK .
- University College London , London Centre for Nanotechnology , Gower Place , WC1E 6BT , London , UK .
| | - Naitik A Panjwani
- University College London , London Centre for Nanotechnology , Gower Place , WC1E 6BT , London , UK .
| | - Di Wu
- Oxford University , Chemistry Research Laboratory , 12 Mansfield Road , OX1 3TA , Oxford , UK .
| | - Rafael Gómez-Bombarelli
- Harvard University , Department of Chemistry and Chemical Biology , 12 Oxford St. 02138 , Cambridge , MA , USA
| | - Brendon W Lovett
- University of St Andrews , SUPA , School of Physics and Astronomy , KY16 9SS , St Andrews , UK .
| | - John J L Morton
- University College London , London Centre for Nanotechnology , Gower Place , WC1E 6BT , London , UK .
| | - Harry L Anderson
- Oxford University , Chemistry Research Laboratory , 12 Mansfield Road , OX1 3TA , Oxford , UK .
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14
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Kübel J, Winter A, Schubert US, Dietzek B. Structure–Property Relationships in an Iridium(III) Bis(Terpyridine) Complex with Extended Conjugated Side chains. J Phys Chem A 2014; 118:12137-48. [DOI: 10.1021/jp5081252] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Joachim Kübel
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
- Leibniz Institute of Photonic Technology (IPHT) Jena e.V., Albert-Einstein-Strasse 9, 07745 Jena, Germany
| | - Andreas Winter
- Laboratory
of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Ulrich S. Schubert
- Laboratory
of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Benjamin Dietzek
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany
- Leibniz Institute of Photonic Technology (IPHT) Jena e.V., Albert-Einstein-Strasse 9, 07745 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
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15
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Karimata A, Suzuki S, Kozaki M, Kimoto K, Nozaki K, Matsushita H, Ikeda N, Akiyama K, Kosumi D, Hashimoto H, Okada K. Direct observation of hole shift and characterization of spin states in radical ion pairs generated from photoinduced electron transfer of (phenothiazine)(n)-anthraquinone (n = 1, 3) dyads. J Phys Chem A 2014; 118:11262-71. [PMID: 25347200 DOI: 10.1021/jp509643q] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Photoinduced intramolecular electron transfer of dyad PTZ3-PTZ2-PTZ1-B-AQ consisting of phenothiazine trimer (PTZ3-PTZ2-PTZ1), bicyclo[2.2.2]octane (B), and anthraquinone (AQ) was investigated. After excitation (∼20 ps) of the AQ moiety in THF, a metastable radical ion pair (RIP) PTZ3-PTZ2-PTZ1(+)-B-AQ(-) appeared at ∼620 nm. From 500 ps to 6 ns the spectrum changed to a new absorption (∼950 nm), which was assigned to the hole-shifted stable RIP state PTZ3-PTZ2(+)-PTZ1-B-AQ(-). The time constant of the hole-shift process was determined to be 6.0 ns. The hole-shifted RIP state had a lifetime (τ) of 250 ns and was characterized by spin-polarized signals as a spin-correlated radical pair (SCRP) by means of time-resolved ESR. These results were compared with those for the phenothiazine monomer analog PTZ-B-AQ, which also produced the RIP state PTZ(+)-B-AQ(-) with τ = 1.9 μs. Time-resolved ESR showed an all emission signal pattern showing the triplet mechanism of PTZ-B-(3)AQ* → (3)[PTZ(+)-B-AQ(-)]. The origin of the difference in the lifetimes between the trimer and the monomer RIP states was discussed from various points of view, including free energy difference in the RIP states, reorganization energy difference in the charge recombination process, and the spin-state difference. Of these, the spin-state difference effect provided the most reasonable explanation.
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Affiliation(s)
- Ayumu Karimata
- Department of Chemistry, Graduate School of Science and ⊥Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka City University , Sumiyoshi-ku, Osaka, 558-8585, Japan
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16
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Zhao J, Li J, Li G, Gao J, Kjelleberg SLA, Loo SCJ, Zhang Q. Aroyleneimidazophenazine: A Sensitive Probe for Detecting CN−Anion and its Solvatochromism Effect. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.2214] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- J. Zhao
- School of Materials Science and Engineering; Nanyang Technological University; Singapore 639798 Singapore
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE); Nanyang Technological University; Singapore 637551 Singapore
| | - J. Li
- School of Materials Science and Engineering; Nanyang Technological University; Singapore 639798 Singapore
| | - G. Li
- School of Materials Science and Engineering; Nanyang Technological University; Singapore 639798 Singapore
| | - J. Gao
- School of Materials Science and Engineering; Nanyang Technological University; Singapore 639798 Singapore
| | - S. L. A. Kjelleberg
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE); Nanyang Technological University; Singapore 637551 Singapore
| | - S. C. J. Loo
- School of Materials Science and Engineering; Nanyang Technological University; Singapore 639798 Singapore
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE); Nanyang Technological University; Singapore 637551 Singapore
| | - Q. Zhang
- School of Materials Science and Engineering; Nanyang Technological University; Singapore 639798 Singapore
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE); Nanyang Technological University; Singapore 637551 Singapore
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17
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Zhao J, Wong JI, Gao J, Li G, Xing G, Zhang H, Sum TC, Yang HY, Zhao Y, Ake Kjelleberg SL, Huang W, Joachim Loo SC, Zhang Q. Larger π-extended anti-/syn-aroylenediimidazole polyaromatic compounds: synthesis, physical properties, self-assembly, and quasi-linear conjugation effect. RSC Adv 2014. [DOI: 10.1039/c4ra01049c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Four polyaromatic compounds with 11- or 13-fused rings have been synthesized and their physical properties have been studied.
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Affiliation(s)
- Jianfeng Zhao
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore 639798, Singapore
- Institute of Advanced Materials
- Nanjing University of Technology
| | - Jen It Wong
- Pillar of Engineering Product Development
- Singapore University of Technology and Design
- Singapore 138682, Singapore
| | - Junkuo Gao
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore 639798, Singapore
| | - Gang Li
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore 639798, Singapore
| | - Guichuan Xing
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore, Singapore
| | - Huacheng Zhang
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore, Singapore
| | - Tze Chien Sum
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore, Singapore
| | - Hui Ying Yang
- Pillar of Engineering Product Development
- Singapore University of Technology and Design
- Singapore 138682, Singapore
| | - Yanli Zhao
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore, Singapore
| | - Staffan Lars Ake Kjelleberg
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE)
- Nanyang Technological University
- Singapore
| | - Wei Huang
- Institute of Advanced Materials
- Nanjing University of Technology
- Nanjing, China
| | - Say Chye Joachim Loo
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore 639798, Singapore
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE)
- Nanyang Technological University
| | - Qichun Zhang
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore 639798, Singapore
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE)
- Nanyang Technological University
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18
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Sazanovich IV, Best J, Scattergood PA, Towrie M, Tikhomirov SA, Bouganov OV, Meijer AJHM, Weinstein JA. Ultrafast photoinduced charge transport in Pt(ii) donor–acceptor assembly bearing naphthalimide electron acceptor and phenothiazine electron donor. Phys Chem Chem Phys 2014; 16:25775-88. [DOI: 10.1039/c4cp03995e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Pt(ii)-based molecular triad engages in step-wise photoinduced charge-separation; the charge recombination occurs through-space via two distinct pathways.
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Affiliation(s)
- Igor V. Sazanovich
- Department of Chemistry
- University of Sheffield
- Sheffield, UK
- Central Laser Facility
- Research Complex at Harwell
| | - Jonathan Best
- Department of Chemistry
- University of Sheffield
- Sheffield, UK
| | | | - Michael Towrie
- Central Laser Facility
- Research Complex at Harwell
- STFC Rutherford Appleton Laboratory
- Harwell Science and Innovation Campus
- Chilton, UK
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19
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Sazanovich IV, Alamiry MAH, Meijer AJHM, Towrie M, Davies ES, Bennett RD, Weinstein JA. Photoinduced charge separation in a PtII acetylide donor–acceptor triad based on 2-(1-pyrazole)-pyridine modified with naphthalene mono-imide electron acceptor. PURE APPL CHEM 2013. [DOI: 10.1351/pac-con-13-04-02] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A class of molecular electron transfer cascades—those based on PtII
complexes of 2-(1-pyrazole)-pyridine (pzpy) ligands—are reported. The synthesis
of a new electron-acceptor imide-modified pzpy ligands is reported, and their
application to transition-metal chemistry demonstrated by the synthesis of the
PtII chloride and acetylide complexes. These donor–acceptor
assemblies are promising models for investigation of photoinduced charge
separation. Accordingly, picosecond time-resolved infrared (TRIR) and
femtosecond transient absorption (TA) studies have been undertaken to elucidate
the nature and dynamics of the lowest excited states in
Pt(NAP-pyr-pyrazole)(–CC–Ph–C7H15)2. It has
been established that the initial population of an MLL'CT excited state in the
chromophoric [Pt(pyridine-pyrazole)(acetylide)] core is followed by an electron
transfer to the naphthalimide (NAP) acceptor, forming a charge-separated state.
This state is characterized by a large shift in ν(CO) vibrations of the NAP
acceptor, as well as by a very intense and broad [×10 times in comparison to
ν(CO)] asymmetric acetylide stretch which incorporates –CC–Pt–CC– framework and
occurs at approximately 300 cm–1 lower in energy than its
ground-state counterpart. In CH2Cl2 at room temperature,
the charge-separated state with the lifetime of 150 ps collapses into an almost
isoenergetic NAP-localized triplet state; the rate of this transformation
changes upon decreasing the temperature to 263 K. This final excited state,
3NAP-(pyr-pyrazole)Pt(–CC–Ph–C7H15)2,
has an unusually long, for PtII complexes, excited-state lifetime of
tens of microseconds. The work demonstrates the possibility of tuning
excited-state properties in this new class of PtII chromophores
designed for electron-transfer cascades.
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Affiliation(s)
| | | | | | - Michael Towrie
- 2Laser for Science Facility, Rutherford Appleton Laboratory, Oxfordshire, OX11 0QX, UK
| | | | - Robert D. Bennett
- 1Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK
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20
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Wu Y, Zhen Y, Wang Z, Fu H. Donor-Linked Di(perylene bisimide)s: Arrays Exhibiting Fast Electron Transfer for Photosynthesis Mimics. J Phys Chem A 2013; 117:1712-20. [DOI: 10.1021/jp310838w] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Yishi Wu
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, People's
Republic of China
| | - Yonggang Zhen
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, People's
Republic of China
| | - Zhaohui Wang
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, People's
Republic of China
| | - Hongbing Fu
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, People's
Republic of China
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21
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Flamigni L, Zanelli A, Langhals H, Böck B. Photoinduced processes in a dyad made of a linear and an angular perylene bisimide. Photochem Photobiol Sci 2013; 12:2137-45. [DOI: 10.1039/c3pp50211b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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22
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Zhao J, Li G, Wang C, Chen W, Loo SCJ, Zhang Q. A new N-substituted heteroacene can detect CN− and F− anions via anion–π interaction. RSC Adv 2013. [DOI: 10.1039/c3ra40845k] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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23
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Suzuki S, Matsumoto Y, Tsubamoto M, Sugimura R, Kozaki M, Kimoto K, Iwamura M, Nozaki K, Senju N, Uragami C, Hashimoto H, Muramatsu Y, Konno A, Okada K. Photoinduced electron transfer of platinum(ii) bipyridine diacetylides linked by triphenylamine- and naphthaleneimide-derivatives and their application to photoelectric conversion systems. Phys Chem Chem Phys 2013; 15:8088-94. [DOI: 10.1039/c3cp50182e] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Klein JH, Sunderland TL, Kaufmann C, Holzapfel M, Schmiedel A, Lambert C. Stepwise versus pseudo-concerted two-electron-transfer in a triarylamine–iridium dipyrrin–naphthalene diimide triad. Phys Chem Chem Phys 2013; 15:16024-30. [DOI: 10.1039/c3cp51981c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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25
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Voloshchuk R, Gryko DT, Chotkowski M, Ciuciu AI, Flamigni L. Photoinduced Electron Transfer in an Amine-Corrole-Perylene Bisimide Assembly: Charge Separation over Terminal Components Favoured by Solvent Polarity. Chemistry 2012; 18:14845-59. [DOI: 10.1002/chem.201200744] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Revised: 07/27/2012] [Indexed: 11/07/2022]
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26
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Langhals H, Böck B, Schmid T, Marchuk A. Angular Benzoperylenetetracarboxylic Bisimides. Chemistry 2012; 18:13188-94. [DOI: 10.1002/chem.201103221] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Revised: 04/24/2012] [Indexed: 11/12/2022]
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27
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Taylor AJ, Davies ES, Weinstein JA, Sazanovich IV, Bouganov OV, Tikhomirov SA, Towrie M, McMaster J, Garner CD. Ultrafast Intramolecular Charge Separation in a Donor–Acceptor Assembly Comprising Bis(η5-cyclopentadienyl)molybdenum Coordinated to an Ene-1,2-dithiolate-naphthalenetetracarboxylicdiimide Ligand. Inorg Chem 2012; 51:13181-94. [DOI: 10.1021/ic301436t] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Adam J. Taylor
- School of Chemistry, University of Nottingham, Nottingham NG7 2 RD, United
Kingdom
| | - E. Stephen Davies
- School of Chemistry, University of Nottingham, Nottingham NG7 2 RD, United
Kingdom
| | - Julia A. Weinstein
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, United Kingdom
| | - Igor V. Sazanovich
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, United Kingdom
| | | | | | - Michael Towrie
- Central Laser Facility, Science
and Technology Facilities Council, Rutherford Appleton Laboratory, OX11 0QX, United Kingdom
| | - Jonathan McMaster
- School of Chemistry, University of Nottingham, Nottingham NG7 2 RD, United
Kingdom
| | - C. David Garner
- School of Chemistry, University of Nottingham, Nottingham NG7 2 RD, United
Kingdom
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28
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Photoinduced charge separation of phenothiazine–platinum–naphthalene diimide triads linked by twisted phenylene bridges. RESEARCH ON CHEMICAL INTERMEDIATES 2012. [DOI: 10.1007/s11164-012-0642-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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29
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Lazarides T, Kuhri S, Charalambidis G, Panda MK, Guldi DM, Coutsolelos AG. Electron vs energy transfer in arrays featuring two Bodipy chromophores axially bound to a Sn(IV) porphyrin via a phenolate or benzoate bridge. Inorg Chem 2012; 51:4193-204. [PMID: 22424174 DOI: 10.1021/ic2026472] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
In this report we describe the synthesis of multichromophore arrays consisting of two Bodipy units axially bound to a Sn(IV) porphyrin center either via a phenolate (3) or via a carboxylate (6) functionality. Absorption spectra and electrochemical studies show that the Bodipy and porphyrin chromophores interact weakly in the ground state. However, steady-state emission and excitation spectra at room temperature reveal that fluorescence from both the Bodipy and the porphyrin of 3 are strongly quenched suggesting that, in the excited state, energy and/or electron transfer might occur. Indeed, as transient absorption experiments show, selective excitation of Bodipy in 3 results in a rapid decay (τ ≈ 2 ps) of the Bodipy-based singlet excited state and a concomitant rise of a charge-separated state evolving from the porphyrin-based singlet excited state. In contrast, room-temperature emission studies on 6 show strong quenching of the Bodipy-based fluorescence leading to sensitized emission from the porphyrin moiety due to a transduction of the singlet excited state energy from Bodipy to the porphyrin. Emission experiments at 77 K in frozen toluene reveal that the room-temperature electron transfer pathway observed in 3 is suppressed. Instead, Bodipy excitation in 3 and 6 results in population of the first singlet excited state of the porphyrin chromophore. Subsequently, intersystem crossing leads to the porphyrin-based triplet excited state.
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Affiliation(s)
- Theodore Lazarides
- Chemistry Department, University of Crete, Voutes Campus, P.O. Box 2208, 71003 Heraklion, Crete, Greece
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30
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31
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Flamigni L, Zanelli A, Langhals H, Böck B. Photophysical and Redox Properties of Perylene Bis- and Tris-Dicarboximide Fluorophores with Triplet State Formation: Transient Absorption and Singlet Oxygen Sensitization. J Phys Chem A 2012; 116:1503-9. [DOI: 10.1021/jp210132w] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Lucia Flamigni
- Istituto per la Sintesi Organica
e Fotoreattivita’ (ISOF), CNR, Via
P. Gobetti 101, 40129 Bologna, Italy
| | - Alberto Zanelli
- Istituto per la Sintesi Organica
e Fotoreattivita’ (ISOF), CNR, Via
P. Gobetti 101, 40129 Bologna, Italy
| | - Heinz Langhals
- Department of Chemistry, LMU University of Munich, Butenandtstr. 13, D-81377
Munich, Germany
| | - Bernd Böck
- Department of Chemistry, LMU University of Munich, Butenandtstr. 13, D-81377
Munich, Germany
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32
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Fukuzumi S, Kashiwagi Y. Photoinduced electron transfer in a supramolecular triad system composed of ferrocene-zinc porphyrin-pyridylnaphtha-lenediimide. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424607000412] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A supramolecular ferrocene-zinc porphyrin-pyridylnaphthalenediimide triad is formed by coordinating the pyridine entity of pyridylnaphthalenediimide with the zinc ion of a ferrocene-zinc porphyrin dyad in benzonitrile. The fluorescence of the zinc porphyrin moiety is efficiently quenched by photoinduced electron transfer from the singlet excited state of the zinc porphyrin moiety to the naphthalenediimide moiety. This is followed by subsequent electron transfer from the ferrocene moiety to the zinc porphyrin radical cation to produce the final charge-separated state, ferricenium ion-zinc porphyrin-naphthalenediimide radical anion, which is successfully detected as a transient absorption spectrum in the laser flash photolysis. The decay of the charge-separated state obeys first-order kinetics irrespective of the initial concentration of the charge-separated state to afford a long lifetime (320 μs). This is the first example of a supramolecular triad that has a long lifetime as compared with the charge-separated state lifetime of the component dyad.
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Affiliation(s)
- Shunichi Fukuzumi
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, SORST, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan
| | - Yukiyasu Kashiwagi
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, SORST, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan
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33
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34
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Hankache J, Wenger OS. Microsecond charge recombination in a linear triarylamine-Ru(bpy)3(2+)-anthraquinone triad. Chem Commun (Camb) 2011; 47:10145-7. [PMID: 21833397 DOI: 10.1039/c1cc13831f] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Linear triads with ruthenium photosensitizers are frequently based on the Ru(terpyridine)(2)(2+) unit. We report on vectorial photoinduced electron transfer in a linear triad based on the Ru(bipyridine)(3)(2+) photosensitizer. Electron-hole separation over a 22 Å-distance is established with a quantum yield greater than 64% and persists for 1.3 μs in acetonitrile.
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Affiliation(s)
- Jihane Hankache
- Georg-August-Universität Göttingen, Institut für Anorganische Chemie, Tammannstrasse 4, D-37077 Göttingen, Germany
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35
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Flamigni L, Ventura B, Barbieri A, Langhals H, Wetzel F, Fuchs K, Walter A. On/off switching of perylene tetracarboxylic bisimide luminescence by means of substitution at the N-position by electron-rich mono-, di-, and trimethoxybenzenes. Chemistry 2011; 16:13406-16. [PMID: 20931574 DOI: 10.1002/chem.201001489] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A series of perylene tetracarboxylic bisimides, substituted at the N-position with methoxyphenyl groups, have been synthesized together with model compounds and their photophysical properties have been investigated by means of steady-state and time-resolved spectroscopic techniques. The luminescence properties of the examined compounds vary remarkably with the substitution pattern, with emission quantum yields ranging from 1 to 10(-2)-10(-3). The observed quenching of the luminescence is assigned to a photoinduced electron transfer (PET) from the electron-rich methoxybenzene unit to the perylene bisimide moiety. The radical anion of perylene bisimide has been detected by transient-absorption spectroscopy. The results could satisfactorily be explained by taking into consideration the redox potentials of the partners and the electron-releasing ability of each methoxy group in relation to its position with respect to N. Quantum-chemical calculations were also performed.
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Affiliation(s)
- Lucia Flamigni
- Istituto ISOF-CNR, Via P. Gobetti 101, 40129 Bologna, Italy.
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36
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Goldstein DC, Cheng YY, Schmidt TW, Bhadbhade M, Thordarson P. Photophysical properties of a new series of water soluble iridium bisterpyridine complexes functionalised at the 4' position. Dalton Trans 2011; 40:2053-61. [PMID: 21218240 DOI: 10.1039/c0dt01317j] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four new hetero- and homo-leptic iridium(III) bisterpyridine complexes have been prepared which incorporate aniline (tpy-φ-NH(2)), benzoic acid (tpy-φ-COOH), and benzyl alcohol (tpy-φ-CH(2)OH) substituents at the 4' positions of the tpy ligands (tpy = 2,2':6',2''-terpyridine, φ = phenylene). The electrochemical behaviour and ground and excited state spectroscopic properties of the complexes are reported, and the X-ray crystal structures of a homoleptic benzyl alcohol [Ir(tpy-φ-CH(2)OH)(2)](PF(6))(3), homoleptic aniline [Ir(tpy-φ-NH(2))(2)](PF(6))(3), and heteroleptic benzyl alcohol/aniline substituted complex [Ir(tpy-φ-CH(2)OH)(tpy-φ-NH(2))](PF(6))(3) have been solved. Complexes with aniline substituents were found to display absorption bands at around 430 nm corresponding to intraligand charge transfer (ILCT) that are sensitive to changes in solvent and pH. Strong emission in the visible region involving the ILCT state is observed in two of the complexes (Φ(e) = 0.7% and 2.6%) in acetonitrile. In the heteroleptic aniline/benzyl alcohol complex the Stokes shift is shown to be linearly related to solvent polarisability according to the Lippert equation, but only for solvents with weak hydrogen bonding interactions. Additionally, in water, emission from the ILCT state is quenched and only weak ligand centred (LC) emission is observed. The long lifetimes and quantum yields of these complexes make them interesting candidates for probes in sensing applications, especially [Ir(tpy-φ-CH(2)OH)(tpy-φ-NH(2))(2)](PF(6))(3) due to its unusual sensitivity to the solvent environment.
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Affiliation(s)
- Daniel C Goldstein
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia.
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37
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Bonnet S, van Lenthe JH, van Dam HJJ, van Koten G, Klein Gebbink RJM. SO2-binding properties of cationic η6,η1-NCN-pincer arene ruthenium platinum complexes: spectroscopic and theoretical studies. Dalton Trans 2011; 40:2542-8. [DOI: 10.1039/c0dt01437k] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Baranoff E, Fantacci S, De Angelis F, Zhang X, Scopelliti R, Grätzel M, Nazeeruddin MK. Cyclometalated Iridium(III) Complexes Based on Phenyl-Imidazole Ligand. Inorg Chem 2010; 50:451-62. [DOI: 10.1021/ic901834v] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Etienne Baranoff
- Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland
| | - Simona Fantacci
- Istituto CNR di Scienze e Tecnologie Molecolari, c/o Dipartimento di Chimica, Università di Perugia, via Elce di Sotto 8, I-06123 Perugia, Italy
- Italian Institute of Technology (IIT), Center for Biomolecular Nanotechnologies, I-73010 Arnesano, Lecce, Italy
| | - Filippo De Angelis
- Istituto CNR di Scienze e Tecnologie Molecolari, c/o Dipartimento di Chimica, Università di Perugia, via Elce di Sotto 8, I-06123 Perugia, Italy
| | - Xianxi Zhang
- Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, P. R. China
| | - Rosario Scopelliti
- Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland
| | - Michael Grätzel
- Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland
| | - Md. Khaja Nazeeruddin
- Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland
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39
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Baranoff E, Yum JH, Jung I, Vulcano R, Grätzel M, Nazeeruddin MK. Cyclometallated iridium complexes as sensitizers for dye-sensitized solar cells. Chem Asian J 2010; 5:496-9. [PMID: 20014001 DOI: 10.1002/asia.200900429] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Etienne Baranoff
- Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland.
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40
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Keyes TE, Forster RJ, Blackledge C. Time resolved spectroscopy of inorganic complexes. SPECTROSCOPIC PROPERTIES OF INORGANIC AND ORGANOMETALLIC COMPOUNDS 2010. [DOI: 10.1039/9781849730853-00211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Time resolved spectroscopy has revolutionised our understanding of photochemical and photophysical reactions of inorganic complexes. In this review, we briefly describe the most common time resolved optical spectroscopic methods applied to inorganic complexes and outline some examples and highlights from the recent literature. The review is not intended to be exhaustive, but highlights key recent papers from coordination chemistry, supramolecular chemistry, carbonyl chemistry and bioinorganic chemistry, as well as, recent insights from ultrafast spectroscopy into the photophysics of important prototypes such as [Ru(bpy)3]2+ and [Cu(dmp)2]+. A brief perspective is then presented which discusses areas where time resolved spectroscopy of inorganic complexes could play a particularly important role in the next few years.
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Affiliation(s)
- Tia E. Keyes
- National Biophotonics and Imaging Platform School of Chemical Sciences, Dublin City University Glasnevin, Dublin 7 Ireland
| | - Robert J. Forster
- National Biophotonics and Imaging Platform School of Chemical Sciences, Dublin City University Glasnevin, Dublin 7 Ireland
| | - Charles Blackledge
- National Biophotonics and Imaging Platform School of Chemical Sciences, Dublin City University Glasnevin, Dublin 7 Ireland
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Ventura B, Flamigni L, Beyler M, Heitz V, Sauvage JP. Unusual Photoinduced Electron Transfer from a Zinc Porphyrin to a Tetrapyridyl Free-Base Porphyrin in a Noncovalent Multiporphyrin Array. Chemistry 2010; 16:8748-56. [DOI: 10.1002/chem.201000375] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Lu X, Zhu W, Xie Y, Li X, Gao Y, Li F, Tian H. Near-IR Core-Substituted Naphthalenediimide Fluorescent Chemosensors for Zinc Ions: Ligand Effects on PET and ICT Channels. Chemistry 2010; 16:8355-64. [DOI: 10.1002/chem.201000461] [Citation(s) in RCA: 150] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Flamigni L, Wyrostek D, Voloshchuk R, Gryko DT. Solvent polarity effect on intramolecular electron transfer in a corrole–naphthalene bisimide dyad. Phys Chem Chem Phys 2010; 12:474-83. [DOI: 10.1039/b916525h] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Langhals H, Obermeier A, Floredo Y, Zanelli A, Flamigni L. Light-Driven Charge Separation in IsoxazolidineâPerylene Bisimide Dyads. Chemistry 2009; 15:12733-44. [DOI: 10.1002/chem.200901839] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Suzuki S, Sugimura R, Kozaki M, Keyaki K, Nozaki K, Ikeda N, Akiyama K, Okada K. Highly Efficient Photoproduction of Charge-Separated States in Donor−Acceptor-Linked Bis(acetylide) Platinum Complexes. J Am Chem Soc 2009; 131:10374-5. [DOI: 10.1021/ja904241r] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shuichi Suzuki
- Department of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan, Department of Chemistry, Graduate School of Science, Osaka University, Machikaneyama, Toyonaka, Osaka 560-0043, Japan, and Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Ryoji Sugimura
- Department of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan, Department of Chemistry, Graduate School of Science, Osaka University, Machikaneyama, Toyonaka, Osaka 560-0043, Japan, and Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Masatoshi Kozaki
- Department of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan, Department of Chemistry, Graduate School of Science, Osaka University, Machikaneyama, Toyonaka, Osaka 560-0043, Japan, and Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Kazutoshi Keyaki
- Department of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan, Department of Chemistry, Graduate School of Science, Osaka University, Machikaneyama, Toyonaka, Osaka 560-0043, Japan, and Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Koichi Nozaki
- Department of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan, Department of Chemistry, Graduate School of Science, Osaka University, Machikaneyama, Toyonaka, Osaka 560-0043, Japan, and Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Noriaki Ikeda
- Department of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan, Department of Chemistry, Graduate School of Science, Osaka University, Machikaneyama, Toyonaka, Osaka 560-0043, Japan, and Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Kimio Akiyama
- Department of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan, Department of Chemistry, Graduate School of Science, Osaka University, Machikaneyama, Toyonaka, Osaka 560-0043, Japan, and Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Keiji Okada
- Department of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan, Department of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan, Department of Chemistry, Graduate School of Science, Osaka University, Machikaneyama, Toyonaka, Osaka 560-0043, Japan, and Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan
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Oliva AI, Ventura B, Würthner F, Camara-Campos A, Hunter CA, Ballester P, Flamigni L. Self-assembly of double-decker cages induced by coordination of perylene bisimide with a trimeric Zn porphyrin: study of the electron transfer dynamics between the two photoactive components. Dalton Trans 2009:4023-37. [DOI: 10.1039/b819496c] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Geiß B, Lambert C. A small cationic donor–acceptor iridium complex with a long-lived charge-separated state. Chem Commun (Camb) 2009:1670-2. [DOI: 10.1039/b820744e] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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