Macromolecular Chemistry and Physics
© WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
November 11, 2009
Functional Polymers: Safe and Efficient Metallo-Polymers for PLEDs
Cheuk-Lam Ho, Chung-Hin Chui,* Wai-Yeung Wong,* Shawkat M. Aly, Daniel Fortin, Pierre D. Harvey,* Bing Yao, Zhiyuan Xie, and Lixiang Wang
Although most of the work in this field of polymer light-emitting diodes (PLEDs) is focused on conjugated polymers that are comprised of organic building blocks, the interest in the properties of organometallic conjugated materials is also growing. Wai-Yeung Wong and co-workers from the Hong Kong Baptist University present the molecular design and optoelectronic properties of a novel platinum(II)-acetylide polymer containing 2,7-carbazole units. The polymer has been used to fabricate efficient PLEDs which exhibit a strong green-yellow electrophosphorescence and displayed the best efficiency of 4.7cd⋅A-1.This study represents the first example of efficient PLEDs exhibiting neat triplet emission under electrical excitation for metallopolyynes. On top of this, biological studies show that the metallo-polymer is non-cytotoxic in vitro on liver and breast derived human cells at reasonable doses rendering it a safe and promising materials for practical devices.
Macromol. Chem. Phys., DOI: 10.1002/macp.200900351