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Yakimanskiy AA, Kaskevich KI, Zhukova EV, Berezin IA, Litvinova LS, Chulkova TG, Lypenko DA, Dmitriev AV, Pozin SI, Nekrasova NV, Tomilin FN, Ivanova DA, Yakimansky AV. Synthesis, Photo- and Electroluminescence of New Polyfluorene Copolymers Containing Dicyanostilbene and 9,10-Dicyanophenanthrene in the Main Chain. Materials (Basel) 2023; 16:5592. [PMID: 37629884 PMCID: PMC10456789 DOI: 10.3390/ma16165592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/06/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023]
Abstract
Using palladium-catalyzed Suzuki polycondensation, we synthesized new light-emitting fluorene copolymers containing the dicyano derivatives of stilbene and phenanthrene and characterized them by gel permeation chromatography, UV-vis absorption spectroscopy, spectrofluorimetry, and cyclic voltammetry. The photoluminescence spectra of the synthesized polymers show significant energy transfer from the fluorene segments to the dicyanostilbene and 9,10-dicyanophenanthrene units, which is in agreement with the data of theoretical calculations. OLEDs based on these polymers were fabricated with an ITO/PEDOT-PSS (35 nm)/p-TPD (30 nm)/PVK (5 nm)/light emitting layer (70-75 nm)/PF-PO (20 nm)/LiF (1 nm)/Al (80 nm) configuration. Examination of their electroluminescence revealed that copolymers of fluorene with dicyanostilbene show yellow-green luminescence, while polymers with 9,10-dicyanophenanthrene have a greenish-blue emission. The 9,10-dicyanophenanthrene units have a more rigid structure compared to dicyanostilbene and, in OLEDs based on them, an increase in maximum brightness is observed with an increase in the content of the additive to the polymer chain. In particular, the device using fluorene copolymer with 9,10-dicyanophenanthrene (2.5 mol%) exhibited a maximum brightness of 9230 cd/m2 and a maximum current efficiency of 3.33 cd/A.
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Affiliation(s)
- Anton A. Yakimanskiy
- Institute of Macromolecular Compounds RAS, Bolshoi Prospect of Vasilyevsky Island 31, St. Petersburg 199004, Russia; (A.A.Y.); (K.I.K.); (E.V.Z.); (I.A.B.); (L.S.L.); (T.G.C.)
| | - Ksenia I. Kaskevich
- Institute of Macromolecular Compounds RAS, Bolshoi Prospect of Vasilyevsky Island 31, St. Petersburg 199004, Russia; (A.A.Y.); (K.I.K.); (E.V.Z.); (I.A.B.); (L.S.L.); (T.G.C.)
| | - Elena V. Zhukova
- Institute of Macromolecular Compounds RAS, Bolshoi Prospect of Vasilyevsky Island 31, St. Petersburg 199004, Russia; (A.A.Y.); (K.I.K.); (E.V.Z.); (I.A.B.); (L.S.L.); (T.G.C.)
| | - Ivan A. Berezin
- Institute of Macromolecular Compounds RAS, Bolshoi Prospect of Vasilyevsky Island 31, St. Petersburg 199004, Russia; (A.A.Y.); (K.I.K.); (E.V.Z.); (I.A.B.); (L.S.L.); (T.G.C.)
| | - Larisa S. Litvinova
- Institute of Macromolecular Compounds RAS, Bolshoi Prospect of Vasilyevsky Island 31, St. Petersburg 199004, Russia; (A.A.Y.); (K.I.K.); (E.V.Z.); (I.A.B.); (L.S.L.); (T.G.C.)
| | - Tatiana G. Chulkova
- Institute of Macromolecular Compounds RAS, Bolshoi Prospect of Vasilyevsky Island 31, St. Petersburg 199004, Russia; (A.A.Y.); (K.I.K.); (E.V.Z.); (I.A.B.); (L.S.L.); (T.G.C.)
| | - Dmitriy A. Lypenko
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Leninskiy Prospect 31, bld.4, Moscow 119071, Russia; (D.A.L.); (A.V.D.); (S.I.P.); (N.V.N.)
| | - Artem V. Dmitriev
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Leninskiy Prospect 31, bld.4, Moscow 119071, Russia; (D.A.L.); (A.V.D.); (S.I.P.); (N.V.N.)
| | - Sergey I. Pozin
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Leninskiy Prospect 31, bld.4, Moscow 119071, Russia; (D.A.L.); (A.V.D.); (S.I.P.); (N.V.N.)
| | - Natalia V. Nekrasova
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Leninskiy Prospect 31, bld.4, Moscow 119071, Russia; (D.A.L.); (A.V.D.); (S.I.P.); (N.V.N.)
| | - Felix N. Tomilin
- Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia;
- School of Non-Ferrous Metals and Material Science, Siberian Federal University, Krasnoyarsk 660041, Russia;
| | - Daria A. Ivanova
- School of Non-Ferrous Metals and Material Science, Siberian Federal University, Krasnoyarsk 660041, Russia;
| | - Alexander V. Yakimansky
- Institute of Macromolecular Compounds RAS, Bolshoi Prospect of Vasilyevsky Island 31, St. Petersburg 199004, Russia; (A.A.Y.); (K.I.K.); (E.V.Z.); (I.A.B.); (L.S.L.); (T.G.C.)
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Kaskevich KI, Babushkina AA, Gurzhiy VV, Egorov DM, Svintsitskaya NI, Dogadina AV. Synthesis of 3(2)-phosphonylated thiazolo[3,2- a]oxopyrimidines. Beilstein J Org Chem 2020; 16:1947-1954. [PMID: 32831951 PMCID: PMC7431766 DOI: 10.3762/bjoc.16.161] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 07/30/2020] [Indexed: 12/28/2022] Open
Abstract
A series of 3(2)-phosphonylated thiazolo[3,2-a]oxopyrimidines was synthesized for the first time by the reactions of chloroethynylphosphonates with unsubstituted and 5(6)-substituted 2-thiouracils. The reaction of chloroethynylphosphonates with 6-substituted 2-thiouracils bearing electron-donor groups (CH3, Ph) proceeded with high regioselectivity involving the cyclization through the N3-nitrogen atom to form new 3-phosphonylated thiazolo[3,2-a]-5-oxopyrimidines with good yield. In the case of unsubstituted and 5-methyl-2-thiouracils, cyclization occurred predominantly through the N1 atom and partially via the N3-nitrogen atom to form a mixture of the corresponding thiazolo[3,2-a]-7- and 5-oxopyrimidines. A dramatic change in the reaction regioselectivity was observed in the case of 6-trifluoromethyl-2-thiouracil that afforded 2- and 3-phosphonylated 5-oxothiazolopyrimidines in a 1:1 ratio.
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Affiliation(s)
- Ksenia I Kaskevich
- Department of Organic Chemistry, St. Petersburg State Institute of Technology, Moskovskii pr. 26, St. Petersburg, 190013, Russia
| | - Anastasia A Babushkina
- Department of Organic Chemistry, St. Petersburg State Institute of Technology, Moskovskii pr. 26, St. Petersburg, 190013, Russia
| | - Vladislav V Gurzhiy
- Department of Crystallography, Institute of Earth Sciences, St. Petersburg State University, Universitetskaya emb. 7/9, St. Petersburg, 199034 Russia
| | - Dmitrij M Egorov
- Department of Organic Chemistry, St. Petersburg State Institute of Technology, Moskovskii pr. 26, St. Petersburg, 190013, Russia
| | - Nataly I Svintsitskaya
- Department of Organic Chemistry, St. Petersburg State Institute of Technology, Moskovskii pr. 26, St. Petersburg, 190013, Russia
| | - Albina V Dogadina
- Department of Organic Chemistry, St. Petersburg State Institute of Technology, Moskovskii pr. 26, St. Petersburg, 190013, Russia
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