Synthesis and Characterization of a Red‐Emitting Copolymer Containing 5,8‐Quinoline Units

Abstract

A novel nitrogen‐containing electroluminescent copolymer, PQV‐alt‐MOPPV has been designed and synthesized by Wittig‐Horner polymerization. Structure, thermal stability, and optical and electrochemical properties of the resulting copolymer were characterized by FT‐IR, 1H NMR, elemental analysis, GPC, DSC, TGA, UV‐vis, PL, EL, and CV. The copolymer possesses excellent solubility in common organic solvents and good thermal stability. The absorption maxima of the copolymer in solution and a thin film are 490 and 516 nm, and the photoluminescence maxima in solution and thin film are 571 and 629 nm, respectively. The PLED (ITO/PEDOT: PSS (40 nm)/PQV‐alt‐MOPPV (80 nm)/Ca (30 nm)/Al (150 nm) shows a very pure red light emission with maximum peaks around 618 nm.magnified image

Synthesis of Polyquinolines via One-Pot Polymerization of Alkyne, Aldehyde, and Aniline under Metal-Free Catalysis and Their Properties

“…In the past few decades, polyquinolines have been extensively studied due to their excellent optical, electrical, and mechanical properties. − For example, Jenekhe et al found that the color of n-type polyquinolines could be tuned visibly from blue to red, which could be potentially used for the preparation of efficient and bright light-emitting devices . However, extremely limited polymerization routes including Suzuki (or Sonogashira) couplings, oxidative polymerizations, and Friedländer synthesis are available for the preparation of polyquinolines .…”

“…Furthermore, the effects of substituents on monomers 1 and 2 on the polymerization were investigated and discussed. In all, this metal-free one-pot polymerization of alkyne–aldehyde monomers and aniline derivatives is simple and can be conducted with commercially available aniline derivatives for the synthesis of a variety of multifunctional polyquinolines with great application potentials in different fields. − …”

Red‐Emitting Polymer Microspheres Containing Zinc Porphyrins

“…[1][2][3][4][5][6][7] To realize full-color display, light-emitting materials with three primary colors, i.e., blue, green, and red, are necessary. Many organic dyes are utilized as emitters of light-emitting materials, but there are relatively few suitable red fluorescent dyes.…”