Facile Horner-Emmons synthesis of defect-free poly(9,9-dialkylfluorenyl-2, 7-vinylene)

• Main Authors: Piched Anuragudom, S. S. Newaz, Sukon Phanichphant, T. Randall Lee
• Format: Journal
• Published: 2018
• Subjects: Materials Science
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33744481589&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/61760
• Institution: Chiang Mai University

This paper describes a simple new strategy for preparing poly(9,9-dialkylfluorenyl-2,7-vinylenes) (PFVs) having high molecular weights and no detectable saturated defects along the conjugated backbone. The new route utilizes a modified Horner-Emmons method by coupling suitably designed comonomers to form the targeted conjugated polymers. The newly prepared PFVs were directly compared to PFVs prepared via a previously established Gilch polymerization route. The structure and optical properties of all PFVs were characterized by gel permeation chromatography (GPC), NMR spectroscopy, UV-vis, fluorescence, and photoluminescence spectroscopy. The findings indicate that the modified Horner-Emmons route gave PFVs with lower molecular weights but substantially higher yields and fewer defects than those prepared by using the Gilch route. © 2006 American Chemical Society.