Fluorene-Carbazole-Based Porous Polymers by Photoinduced Electron Transfer Reactions

KOYUNCU S., Hu P., Li Z., Liu R., Bilgili H., Yağcı Y.

MACROMOLECULES, vol.53, no.5, pp.1645-1651, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 53 Issue: 5
  • Publication Date: 2020
  • Doi Number: 10.1021/acs.macromol.9b02709
  • Journal Name: MACROMOLECULES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Biotechnology Research Abstracts, Chimica, Compendex
  • Page Numbers: pp.1645-1651
  • Çanakkale Onsekiz Mart University Affiliated: Yes

Abstract

A new photoinitiating system for the metal-free preparation of conjugated microporous polymers (CMPs) is reported. In this approach, irradiation of solutions containing an electroactive monomer, possessing both carbazole and fluorene units, 9,9'-(9,9-dihexyl-9H-fluorene-2,7-diyl)bis-9H-carbazole (CFD), and the iodonium salt (Ph2I+PF6-) as the oxidizing agent resulted in the formation of CMPs. Photoinduced step-growth polymerization proceeded through the successive electron transfer between the excited CFD and iodonium salt, proton release, and coupling reactions. The polymers formed were characterized by FT-IR and H-1 NMR analyses. The electrochemical and optical properties of CMPs before and after the dedoping process were evaluated by cyclic voltammetry, differential pulse voltammetry, and UV-vis absorption and photoluminescence techniques. The porous structure of the obtained polymers was confirmed by atomic force microscopy and scanning electron microscopy studies.