Synthesis and photophysical properties of copolyfluorenes for light-emitting applications: Spectroscopic experimental study and theoretical DFT consideration

Описание

Тип публикации: статья из журнала

Год издания: 2019

Идентификатор DOI: 10.1016/j.polymer.2019.02.015

Ключевые слова: Density functional theory, Suzuki cross-coupling, Yamamoto polycondensation, Density functional theory, Suzuki cross-coupling, Yamamoto polycondensation

Аннотация: Using Suzuki and Yamamoto coupling reactions, copoly-(9,9-dioctylfluorenes) (CPF) were synthesized and compared regarding their photophysical properties using the spectroscopic and ab initio DFT approaches. The CPFs were functionalized by benzo [2,3,5] thiadiazole (BT) or carbazole-3,6-diyl (3,6-Cz). The latter was used to introducПоказать полностьюe different luminophore fragments, including Nile red and 4-pyrrolidinyl-1,8-naphthalimide derivatives. The effect of the two synthesis techniques on the polymer microstructure, the influence of embedding of 3,6-Cz moieties in the polymer backbone on polymer structuring, and the impact of the end groups like novel quinoxaline-containing compounds on the luminescent properties of CPFs were investigated. By comparing electron density distribution using the ab initio DFT approach with photoluminescence, it was shown that Suzuki reaction provides a chain microstructure with individual BT fragments separated by 9,9-dioctylfluorene monomeric units, while Yamamoto reaction leads to the blocks of BT units. This effect leads to different CPF photophysical properties (absorption and emission spectra). © 2019 Elsevier Ltd

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Издание

Журнал: Polymer

Выпуск журнала: Vol. 168

Номера страниц: 185-198

ISSN журнала: 00323861

Издатель: Elsevier Ltd

Авторы

  • Smyslov Ruslan Yu (Russian Acad Sci, Inst Macromol Cpds, Bolshoy 31, St Petersburg 199004, Russia; NRC Kurchatov Inst, Petersburg Nucl Phys Inst, Mkr Orlova Roscha 1, Gatchina 188300, Leningrad Regio, Russia)
  • Tomilin Felix N. (Siberian Fed Univ, Svobodny 79, Krasnoyarsk 660041, Russia; Russian Acad Sci, Fed Res Ctr, Kirensky Inst Phys, Siberian Branch,Krasnoyarsk Sci Ctr, Akad Gorodok 50-38, Krasnoyarsk 660036, Russia)
  • Shchugoreva Irina A. (Siberian Fed Univ, Svobodny 79, Krasnoyarsk 660041, Russia)
  • Nosova Galina (Russian Acad Sci, Inst Macromol Cpds, Bolshoy 31, St Petersburg 199004, Russia)
  • Zhukova Elena (Russian Acad Sci, Inst Macromol Cpds, Bolshoy 31, St Petersburg 199004, Russia)
  • Litvinova Larisa S. (Russian Acad Sci, Inst Macromol Cpds, Bolshoy 31, St Petersburg 199004, Russia)
  • Yakimansky Alexander (Russian Acad Sci, Inst Macromol Cpds, Bolshoy 31, St Petersburg 199004, Russia; St Petersburg State Univ, Unive Skaya Nab 7-9, St Petersburg 199034, Russia)
  • Kolesnikov Ilya (St Petersburg State Univ, Unive Skaya Nab 7-9, St Petersburg 199034, Russia)
  • Abramov Igor G. (Yaroslavl State Tech Univ, Moskovskii 88, Yaroslavl 150023, Russia)
  • Ovchinnikov Sergei G. (Siberian Fed Univ, Svobodny 79, Krasnoyarsk 660041, Russia; Russian Acad Sci, Fed Res Ctr, Kirensky Inst Phys, Siberian Branch,Krasnoyarsk Sci Ctr, Akad Gorodok 50-38, Krasnoyarsk 660036, Russia)
  • Avramov Paul (Kyungpook Natl Univ, Dept Chem & Greennano Mat Res Ctr, 80 Daehakro, Daegu 41556, South Korea)

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