Dipyridylmethane Ethers as Ligands for Luminescent Ir Complexes
This work reports two new cationic heteroleptic cyclometalated iridium complexes, containing ether derivatives of di(pyridin-2-yl)methanol. The new ligands are based on dipyridin-2-ylmethane and are designed to obtain ether-based intermediates with extended electronic conjugation by insertion of π s...
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| Veröffentlicht in: | Molecules (Basel, Switzerland) Jg. 26; H. 23; S. 7161 |
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| Abstract | This work reports two new cationic heteroleptic cyclometalated iridium complexes, containing ether derivatives of di(pyridin-2-yl)methanol. The new ligands are based on dipyridin-2-ylmethane and are designed to obtain ether-based intermediates with extended electronic conjugation by insertion of π system such as phenyl, allyl and ethynyl. Different synthetic strategies were employed to introduce these units, as molecular wires, between the dipyridin-2-ylmethane chelating portion and the terminal N-containing functional group, such as amine and carbamide. The corresponding complexes show luminescence in the blue region of the spectrum, lifetimes between 0.6 and 2.1 μs, high quantum yield and good electrochemical behavior. The computational description (DFT) of the electronic structure highlights the key role of the conjugated π systems on optical and electrochemical properties of the final products. |
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| AbstractList | This work reports two new cationic heteroleptic cyclometalated iridium complexes, containing ether derivatives of di(pyridin-2-yl)methanol. The new ligands are based on dipyridin-2-ylmethane and are designed to obtain ether-based intermediates with extended electronic conjugation by insertion of π system such as phenyl, allyl and ethynyl. Different synthetic strategies were employed to introduce these units, as molecular wires, between the dipyridin-2-ylmethane chelating portion and the terminal N-containing functional group, such as amine and carbamide. The corresponding complexes show luminescence in the blue region of the spectrum, lifetimes between 0.6 and 2.1 μs, high quantum yield and good electrochemical behavior. The computational description (DFT) of the electronic structure highlights the key role of the conjugated π systems on optical and electrochemical properties of the final products.This work reports two new cationic heteroleptic cyclometalated iridium complexes, containing ether derivatives of di(pyridin-2-yl)methanol. The new ligands are based on dipyridin-2-ylmethane and are designed to obtain ether-based intermediates with extended electronic conjugation by insertion of π system such as phenyl, allyl and ethynyl. Different synthetic strategies were employed to introduce these units, as molecular wires, between the dipyridin-2-ylmethane chelating portion and the terminal N-containing functional group, such as amine and carbamide. The corresponding complexes show luminescence in the blue region of the spectrum, lifetimes between 0.6 and 2.1 μs, high quantum yield and good electrochemical behavior. The computational description (DFT) of the electronic structure highlights the key role of the conjugated π systems on optical and electrochemical properties of the final products. This work reports two new cationic heteroleptic cyclometalated iridium complexes, containing ether derivatives of di(pyridin-2-yl)methanol. The new ligands are based on dipyridin-2-ylmethane and are designed to obtain ether-based intermediates with extended electronic conjugation by insertion of π system such as phenyl, allyl and ethynyl. Different synthetic strategies were employed to introduce these units, as molecular wires, between the dipyridin-2-ylmethane chelating portion and the terminal N-containing functional group, such as amine and carbamide. The corresponding complexes show luminescence in the blue region of the spectrum, lifetimes between 0.6 and 2.1 μs, high quantum yield and good electrochemical behavior. The computational description (DFT) of the electronic structure highlights the key role of the conjugated π systems on optical and electrochemical properties of the final products. |
| Author | Volpi, Giorgio Gobetto, Roberto Nervi, Carlo Garino, Claudio |
| AuthorAffiliation | Department of Chemistry, University of Turin, Via Pietro Giuria 7, 10125 Torino, Italy; claudio.garino@unito.it (C.G.); roberto.gobetto@unito.it (R.G.); carlo.nervi@unito.it (C.N.) |
| AuthorAffiliation_xml | – name: Department of Chemistry, University of Turin, Via Pietro Giuria 7, 10125 Torino, Italy; claudio.garino@unito.it (C.G.); roberto.gobetto@unito.it (R.G.); carlo.nervi@unito.it (C.N.) |
| Author_xml | – sequence: 1 givenname: Giorgio orcidid: 0000-0002-9695-9202 surname: Volpi fullname: Volpi, Giorgio – sequence: 2 givenname: Claudio orcidid: 0000-0002-7854-6076 surname: Garino fullname: Garino, Claudio – sequence: 3 givenname: Roberto orcidid: 0000-0002-2431-8051 surname: Gobetto fullname: Gobetto, Roberto – sequence: 4 givenname: Carlo orcidid: 0000-0002-3712-7369 surname: Nervi fullname: Nervi, Carlo |
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| Snippet | This work reports two new cationic heteroleptic cyclometalated iridium complexes, containing ether derivatives of di(pyridin-2-yl)methanol. The new ligands are... |
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| SubjectTerms | Catalysis ether ligands heteroleptic cyclometalated complexes iridium lifetime Ligands luminescence Optical properties Oxidation quantum yield |
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| Title | Dipyridylmethane Ethers as Ligands for Luminescent Ir Complexes |
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