Photoprocesses in Bis-Diethylamino Derivatives of 1,4- and 1,3-Distyrylbenzene
The photoprocesses of diethylamino derivatives of 1,4- and 1,3-distyrylbenzenes in MeCN were studied using absorption, luminescence, 1H NMR, and laser kinetic spectroscopy. Compounds 1 and 2 undergo intersystem crossing to the triplet state and exhibit delayed fluorescence. It was concluded that dye...
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| Published in | Molecules (Basel, Switzerland) Vol. 29; no. 17; p. 4139 |
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| Main Authors | , , , , , , , |
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| Abstract | The photoprocesses of diethylamino derivatives of 1,4- and 1,3-distyrylbenzenes in MeCN were studied using absorption, luminescence, 1H NMR, and laser kinetic spectroscopy. Compounds 1 and 2 undergo intersystem crossing to the triplet state and exhibit delayed fluorescence. It was concluded that dye radical anions and radical cations are formed upon dismutation of the triplet state in the presence of an electron donor or acceptor. Quantum mechanical calculations for the structures of diethylamino distyrylbenzenes in the ground and excited states were carried out, making it possible to establish the structures of isomers and the most stable conformers for both compounds. |
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| AbstractList | The photoprocesses of diethylamino derivatives of 1,4- and 1,3-distyrylbenzenes in MeCN were studied using absorption, luminescence, 1H NMR, and laser kinetic spectroscopy. Compounds 1 and 2 undergo intersystem crossing to the triplet state and exhibit delayed fluorescence. It was concluded that dye radical anions and radical cations are formed upon dismutation of the triplet state in the presence of an electron donor or acceptor. Quantum mechanical calculations for the structures of diethylamino distyrylbenzenes in the ground and excited states were carried out, making it possible to establish the structures of isomers and the most stable conformers for both compounds. The photoprocesses of diethylamino derivatives of 1,4- and 1,3-distyrylbenzenes in MeCN were studied using absorption, luminescence, 1H NMR, and laser kinetic spectroscopy. Compounds 1 and 2 undergo intersystem crossing to the triplet state and exhibit delayed fluorescence. It was concluded that dye radical anions and radical cations are formed upon dismutation of the triplet state in the presence of an electron donor or acceptor. Quantum mechanical calculations for the structures of diethylamino distyrylbenzenes in the ground and excited states were carried out, making it possible to establish the structures of isomers and the most stable conformers for both compounds.The photoprocesses of diethylamino derivatives of 1,4- and 1,3-distyrylbenzenes in MeCN were studied using absorption, luminescence, 1H NMR, and laser kinetic spectroscopy. Compounds 1 and 2 undergo intersystem crossing to the triplet state and exhibit delayed fluorescence. It was concluded that dye radical anions and radical cations are formed upon dismutation of the triplet state in the presence of an electron donor or acceptor. Quantum mechanical calculations for the structures of diethylamino distyrylbenzenes in the ground and excited states were carried out, making it possible to establish the structures of isomers and the most stable conformers for both compounds. The photoprocesses of diethylamino derivatives of 1,4- and 1,3-distyrylbenzenes in MeCN were studied using absorption, luminescence, H NMR, and laser kinetic spectroscopy. Compounds and undergo intersystem crossing to the triplet state and exhibit delayed fluorescence. It was concluded that dye radical anions and radical cations are formed upon dismutation of the triplet state in the presence of an electron donor or acceptor. Quantum mechanical calculations for the structures of diethylamino distyrylbenzenes in the ground and excited states were carried out, making it possible to establish the structures of isomers and the most stable conformers for both compounds. |
| Author | Atabekyan, Levon S. Gromov, Sergey P. Nuriev, Vyacheslav N. Avakyan, Vitaly G. Vatsadze, Sergey Z. Fomina, Marina V. Medved’ko, Alexey V. Chibisov, Alexander K. |
| Author_xml | – sequence: 1 givenname: Levon S. orcidid: 0000-0003-3739-1693 surname: Atabekyan fullname: Atabekyan, Levon S. – sequence: 2 givenname: Vitaly G. orcidid: 0000-0002-3658-9836 surname: Avakyan fullname: Avakyan, Vitaly G. – sequence: 3 givenname: Marina V. orcidid: 0000-0001-9401-7118 surname: Fomina fullname: Fomina, Marina V. – sequence: 4 givenname: Vyacheslav N. orcidid: 0000-0002-0915-7894 surname: Nuriev fullname: Nuriev, Vyacheslav N. – sequence: 5 givenname: Alexey V. orcidid: 0000-0002-8731-6934 surname: Medved’ko fullname: Medved’ko, Alexey V. – sequence: 6 givenname: Sergey Z. orcidid: 0000-0001-7884-8579 surname: Vatsadze fullname: Vatsadze, Sergey Z. – sequence: 7 givenname: Sergey P. orcidid: 0000-0002-2542-7807 surname: Gromov fullname: Gromov, Sergey P. – sequence: 8 givenname: Alexander K. orcidid: 0000-0003-4623-8893 surname: Chibisov fullname: Chibisov, Alexander K. |
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| Keywords | laser photolysis radical species distyrylbenzene fluorescence triplet–triplet dismutation |
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| Snippet | The photoprocesses of diethylamino derivatives of 1,4- and 1,3-distyrylbenzenes in MeCN were studied using absorption, luminescence, 1H NMR, and laser kinetic... The photoprocesses of diethylamino derivatives of 1,4- and 1,3-distyrylbenzenes in MeCN were studied using absorption, luminescence, H NMR, and laser kinetic... |
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| SubjectTerms | distyrylbenzene Electrons fluorescence Kinetics laser photolysis Lasers Photonics radical species Spectrum analysis triplet–triplet dismutation |
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| Title | Photoprocesses in Bis-Diethylamino Derivatives of 1,4- and 1,3-Distyrylbenzene |
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