Feature article

Macromolecular Research

, Volume 16, Issue 4, pp 337-344

Synthesis and characterization of spirobifluorene-based polymers for organic light-emitting diode applications

  • Md. Anwarul KarimAffiliated withDepartment of Materials Science and Engineering, Pusan National University
  • , Young-Rae ChoAffiliated withDepartment of Materials Science and Engineering, Pusan National University
  • , Jin Su ParkAffiliated withDepartment of Chemistry Education and Interdisciplinary Program of Advanced Information and Display Materials, Pusan National University
  • , Kyung-Jin YoonAffiliated withDepartment of Chemistry Education and Interdisciplinary Program of Advanced Information and Display Materials, Pusan National University
  • , Seung Joon LeeAffiliated withDepartment of Chemistry Education and Interdisciplinary Program of Advanced Information and Display Materials, Pusan National University
  • , Sung-Ho JinAffiliated withDepartment of Chemistry Education and Interdisciplinary Program of Advanced Information and Display Materials, Pusan National University Email author 
  • , Gi-Dong LeeAffiliated withDepartment of Electronics Engineering, Dong-A University Email author 
  • , Yeong-Soon GalAffiliated withPolymer Chemistry Lab., Kyungil University

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

The following series of blue EL polymers was synthesized using the Suzuki polymerization method: poly(3′,6′-bis(3,7-dimethyloctyloxy)-9,9′-spirobifluorene-2,7-diyl) poly[(OC10)2-spirobifluorene], poly(3′,6′-bis(3,7-dimethyloctyloxy)-9,9′-2,7-diyl-co-4-(3,7-dimethyloctyloxy) phenyl-diphenylamine-4′,4′-diyl} poly[(OC10)2-spirobifluorene-TPA] (5∶1, 9∶1) and poly(3′,6′-bis(3,7-dimethyloctyloxy)-9′,9′-spirobifluorene-2,7-diyl-co-4-(6-((3-methyloxetan-3-yl)methoxy) hexyloxyphenyl-bisphenylamine-4′,4′-diyl) poly[(OC10)2-spirobifluorene-TPA-oxetane]. The weight average molecular weight (Mw) and polydispersity of the resulting polymers ranged from 1.6×104–1.5×105 and 1.77–2.31, respectively. The resulting polymers were completely soluble in common organic solvents and were easily spin-coated onto an indium tin oxide (ITO) substrate. The polymers exhibited strong blue emission peaking at 450 nm. The maximum brightness and luminance efficiency were 9,960 cd/m2 and 1.2 cd/A, respectively.

Keywords

PLED interlayer poly(spirobifluorene) oxetane