1
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Mede T, Jäger M, Schubert US. High-Yielding Syntheses of Multifunctionalized Ru II Polypyridyl-Type Sensitizer: Experimental and Computational Insights into Coordination. Inorg Chem 2019; 58:9822-9832. [PMID: 31322344 DOI: 10.1021/acs.inorgchem.9b00847] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
RuII complexes based on functionalized 2,6-di(quinolin-8-yl)pyridine (dqp) ligands feature excellent photophysical and geometrical properties, thus suggesting dqp ligands as ideal surrogates for 2,2'-bipyridine (bpy) or 2,2':6',2″-terpyridine (tpy). However, the synthesis of multifunctionalized [Ru(dqp)2]2+-based complexes is often low-yielding, which has hampered their practical value to date. In this study, a universal high-yielding route was explored and corroborated by a mechanistic investigation based on 1H NMR, MS, and density functional theory. With application of high-boiling but less-coordinating solvents (i.e., DMF) during the coordination of dqp by the precursor [Ru(dqp)(MeCN)3]2+, the required reaction temperature is lowered considerably (by 30 °C). In comparison to tpy, the reaction rate for dqp is further reduced which is assigned to the higher steric demand upon the coordination process. Namely, the onset of coordination of a tpy derivative at 60 °C and of dqp at 90 °C is significantly milder than in previous protocols. The versatility of the procedure is demonstrated by the high-yielding syntheses of multifunctionalized RuII complexes reaching up to 90%, whereby the presence of hydroxyl groups and losses during purification may lower the isolated yields substantially. In addition, the same strategy of high-boiling but less-coordinating solvents enabled a milder one-pot protocol to prepare [Ru(dqp)2]2+ from a [Ru(MeCN)6]2+ source, i.e., without the need for in situ reduction or halide abstraction as typical for RuIIICl3 hydrate. Hence, the developed protocol benefits from an improved thermal tolerance of sensitive functional groups, which may be applicable also to related polypyridyl-type ligands.
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Affiliation(s)
- Tina Mede
- Laboratory of Organic and Macromolecular Chemistry (IOMC) , Friedrich Schiller University Jena , Humboldtstraße 10 , 07743 Jena , Germany
| | - Michael Jäger
- Laboratory of Organic and Macromolecular Chemistry (IOMC) , Friedrich Schiller University Jena , Humboldtstraße 10 , 07743 Jena , Germany.,Center for Energy and Environmental Chemistry Jena (CEEC Jena) , Friedrich Schiller University Jena , Philosophenweg 7a , 07743 Jena , Germany
| | - Ulrich S Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC) , Friedrich Schiller University Jena , Humboldtstraße 10 , 07743 Jena , Germany.,Center for Energy and Environmental Chemistry Jena (CEEC Jena) , Friedrich Schiller University Jena , Philosophenweg 7a , 07743 Jena , Germany
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2
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Luo Y, Wächtler M, Barthelmes K, Winter A, Schubert US, Dietzek B. Superexchange in the fast lane - intramolecular electron transfer in a molecular triad occurs by conformationally gated superexchange. Chem Commun (Camb) 2019; 55:5251-5254. [PMID: 30990492 DOI: 10.1039/c9cc01886g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photoinduced electron transfer via hopping is generally considered to have a stronger temperature dependence than electron transfer via superexchange. However, in this work, an opposite trend of the temperature dependence is observed. This unexpected result is rationalized by considering the specific geometrical and electronic structure of the Ru-bis(terpyridine) photosensitizer.
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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 and Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Straβe 9, 07745 Jena, Germany.
| | - Maria Wächtler
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743 Jena, Germany and Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Straβe 9, 07745 Jena, Germany.
| | - Kevin Barthelmes
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Humboldtstraβe 10, 07743 Jena, Germany and Center for Energy and Environmental Chemistry Jena (CEEC Jena), Philosophenweg 7a, 07743 Jena, Germany
| | - Andreas Winter
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Humboldtstraβe 10, 07743 Jena, Germany and Center for Energy and Environmental Chemistry Jena (CEEC Jena), Philosophenweg 7a, 07743 Jena, Germany
| | - Ulrich S Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Humboldtstraβe 10, 07743 Jena, Germany and Center for Energy and Environmental Chemistry Jena (CEEC Jena), Philosophenweg 7a, 07743 Jena, Germany
| | - Benjamin Dietzek
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743 Jena, Germany and Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Straβe 9, 07745 Jena, Germany. and Center for Energy and Environmental Chemistry Jena (CEEC Jena), Philosophenweg 7a, 07743 Jena, Germany
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3
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Luo Y, Tran JH, Wächtler M, Schulz M, Barthelmes K, Winter A, Rau S, Schubert US, Dietzek B. Remote control of electronic coupling – modification of excited-state electron-transfer rates in Ru(tpy)2-based donor–acceptor systems by remote ligand design. Chem Commun (Camb) 2019; 55:2273-2276. [DOI: 10.1039/c8cc10075f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Electronic coupling (HDA) underlying the electron transfer (ET) can be tuned by the remote substituents R.
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Affiliation(s)
- Yusen Luo
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
- Department Functional Interfaces
| | - Jens H. Tran
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
| | - Maria Wächtler
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
- Department Functional Interfaces
| | - Martin Schulz
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
| | - Kevin Barthelmes
- Laboratory of Organic and Macromolecular Chemistry (IOMC)
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena)
| | - Andreas Winter
- Laboratory of Organic and Macromolecular Chemistry (IOMC)
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena)
| | - Sven Rau
- Institute for Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
| | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC)
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena)
| | - Benjamin Dietzek
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
- Department Functional Interfaces
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4
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Singh VD, Paitandi RP, Dwivedi BK, Singh RS, Pandey DS. Cyclometalated Ir(III) Complexes Involving Functionalized Terpyridine-Based Ligands Exhibiting Aggregation-Induced Emission and Their Potential Applications in CO2 Detection. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00520] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Vishwa Deepak Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, U.P., India
| | - Rajendra Prasad Paitandi
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, U.P., India
| | - Bhupendra Kumar Dwivedi
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, U.P., India
| | - Roop Shikha Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, U.P., India
| | - Daya Shankar Pandey
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, U.P., India
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5
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Barthelmes K, Sittig M, Winter A, Schubert US. Molecular Dyads and Triads Based on Phenothiazine and π-Extended Tetrathiafulvalene Donors, Bis(terpyridine)ruthenium(II) Complexes, and Polyoxometalates. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700626] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kevin Barthelmes
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstr. 10 07743 Jena Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena); Friedrich Schiller University Jena; Philosophenweg 7a 07743 Jena Germany
| | - Maria Sittig
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstr. 10 07743 Jena Germany
| | - Andreas Winter
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstr. 10 07743 Jena Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena); Friedrich Schiller University Jena; Philosophenweg 7a 07743 Jena Germany
| | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstr. 10 07743 Jena Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena); Friedrich Schiller University Jena; Philosophenweg 7a 07743 Jena Germany
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6
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Luo Y, Barthelmes K, Wächtler M, Winter A, Schubert US, Dietzek B. Energy versus Electron Transfer: Controlling the Excitation Transfer in Molecular Triads. Chemistry 2017; 23:4917-4922. [PMID: 28198051 DOI: 10.1002/chem.201700413] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Indexed: 01/23/2023]
Abstract
The photochemistry of RuII coordination compounds is generally discussed to originate from the lowest lying triplet metal-to-ligand charge-transfer state (3 MLCT). However, when heteroleptic complexes are considered, for example, in the design of molecular triads for efficient photoinduced charge separation, a complex structure of 1 MLCT states, which can be populated in a rather narrow spectral window (typically around 450 nm) is to be considered. In this contribution we show that the localization of MLCT excited states on different ligands can affect the following ps to ns decay pathways to an extent that by tuning the excitation wavelength, intermolecular energy transfer from a RuII -terpyridine unit to a fullerene acceptor can be favored over electron transfer within the molecular triad. These results might have important implications for the design of molecular dyads, triads, pentads and so forth with respect to a specifically targeted response of these complexes to photoexcitation.
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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.,Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Strasse 9, 07745, Jena, Germany
| | - Kevin Barthelmes
- Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, 07743, Jena, Germany.,Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Humboldtstrasse 10, 07743, Jena, Germany
| | - Maria Wächtler
- Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Strasse 9, 07745, Jena, Germany
| | - Andreas Winter
- Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, 07743, Jena, Germany.,Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Humboldtstrasse 10, 07743, Jena, Germany
| | - Ulrich S Schubert
- Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, 07743, Jena, Germany.,Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Humboldtstrasse 10, 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), 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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7
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Soni D, Gangada S, Duvva N, Roy TK, Nimesh S, Arya G, Giribabu L, Chitta R. Hypochlorite-promoted inhibition of photo-induced electron transfer in phenothiazine–borondipyrromethene donor–acceptor dyad: a cost-effective and metal-free “turn-on” fluorescent chemosensor for hypochlorite. NEW J CHEM 2017. [DOI: 10.1039/c7nj00516d] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
APTZ-BODIPY based fluorescent chemosensor was designed and used for hypochlorite detection.
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Affiliation(s)
- Disha Soni
- Department of Chemistry
- School of Chemical Sciences & Pharmacy
- Central University of Rajasthan
- Bandar Sindri
- India
| | - Suneel Gangada
- Department of Chemistry
- School of Chemical Sciences & Pharmacy
- Central University of Rajasthan
- Bandar Sindri
- India
| | - Naresh Duvva
- Inorganic & Physical Chemistry Division
- Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Tapta Kanchan Roy
- Department of Chemistry and Chemical Sciences
- Central University of Jammu
- Jammu – 180001
- India
| | - Surendra Nimesh
- Department of Biotechnology
- School of Life Sciences
- Central University of Rajasthan
- Bandar indri
- India
| | - Geeta Arya
- Department of Biotechnology
- School of Life Sciences
- Central University of Rajasthan
- Bandar indri
- India
| | - Lingamallu Giribabu
- Inorganic & Physical Chemistry Division
- Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Raghu Chitta
- Department of Chemistry
- School of Chemical Sciences & Pharmacy
- Central University of Rajasthan
- Bandar Sindri
- India
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