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Blue-light-emitting hyperbranched polyfluorenes with photocrosslinkable group

DUO-FENG TANG1, GUI-AN WEN1, XIAO-YING QI1, YU XIN1, XING-RONG ZHU1, LIAN-HUI WANG1, WEI WEI1, WEI HUANG1,2,*

Affiliation

  1. Institute of Advanced Materials (IAM), Fudan University, Shanghai 200433, China
  2. Department of Chemical and Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Republic of Singapore

Abstract

The blue-light-emitting crosslinkable hyperbranched polyfluorene P2 with higher content of branched unit were synthesized by the palladium-catalyzed Suzuki coupling reaction. The molecular weight and thermal behavior was analysized by GPC, DSC and TG. By contrast with the lower branched unit content hyperbranched polyfluorene P1 and linear polyfluorene P0, the photoluminescence (PL) spectra of P2 shows excellent stability even annealing in air at 200 oC after 3 hours after crosslink. The stabilized hyperbranched polyfluorene can be used in multilayer and multicolor PLED..

Keywords

Hyperbranched, Polyfluorene, Photocrosslinking, Blue-light-emitting.

Submitted at: Nov. 14, 2006
Accepted at: May 15, 2007

Citation

DUO-FENG TANG, GUI-AN WEN, XIAO-YING QI, YU XIN, XING-RONG ZHU, LIAN-HUI WANG, WEI WEI, WEI HUANG, Blue-light-emitting hyperbranched polyfluorenes with photocrosslinkable group, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 5, pp. 1362-1366 (2007)