Fluorene/Carbazole Alternating Copolymers Tethered with Polyhedral Oligomeric Silsesquioxanes: Synthesis, Characterization, and Electroluminescent Properties. Issue 15 (5th July 2013)

• Record Type: Journal Article
• Authors: Xie, Nana; Wang, Jinze; Guo, Zhilong; Chen, Guangxin; Li, Qifang
• Is Part Of: Macromolecular chemistry and physics. Volume 214:Issue 15(2013:Aug.)
• Page Start: 1710
• Page End: 1723
• Publication Date: 2013-07-05
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; Synthetic products -- Periodicals; Macromolecules -- Periodicals; 547.7
• DOI: 10.1002/macp.201300290
• Languages: English
• ISSNs: 1022-1352

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A series of novel fluorene/carbazole alternating copolymers tethered with polyhedral oligomeric silsesquioxanes (POSS), which have well‐defined architectures and similar polymerization degrees, are synthesized by the Heck coupling reaction to investigate the effects of the number and the position of POSS on the optoelectronic properties. The introduction of POSS results in blue shifts in the photoluminescence (PL) emission spectra (especially for <bold>P2</bold>) and improved thermal spectral stability. Moreover, an appropriate amount of POSS is beneficial for enhancing the electroluminescent properties, and a better performance is obtained when POSS units are tethered to the 9‐position of the carbazole units, rather than fluorene units. Moreover, POSS facilitates the balance of electron and hole fluxes.<boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg37f5zf0j" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>