High-efficiency synthesis of a naphthalene-diimide-based conjugated polymer using continuous flow technology for organic field-effect transistors. Issue 27 (27th June 2019)

• Record Type: Journal Article
• Authors: Wang, Weiwei; Chen, Ruikun; Hu, Yaohui; Lu, Hongbo; Qiu, Longzhen; Ding, Yunsheng; Sun, Dengrong; Zhang, Guobing
• Is Part Of: Journal of materials chemistry. Volume 7:Issue 27(2019)
• Page Start: 8450
• Page End: 8456
• Publication Date: 2019-06-27
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c9tc01785b
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : A conjugated polymer based on naphthalene-diimide and dithiophene units was synthesized by continuous flow synthesis. Abstract : A conjugated polymer based on naphthalene-diimide and dithiophene units was synthesized by continuous flow synthesis. Due to the large specific surface area and excellent heat transfer, the polymerization was completed within ∼35 min at 110 °C. Compared to flask synthesis, the continuous flow technology exhibited a high synthesis efficiency and significant reduction in reaction times. The polymer using flow synthesis exhibited higher molecular weight (17.28/35.27 vs. 4.86/13.21 kg mol −1 ), lower polydispersity indexes (2.0 vs. 2.7), and a more ordered crystalline structure. Consequently, much higher electron mobilities (0.74 vs. 0.11 cm 2 V −1 s −1 ) with I on / I off ratios of 10 6 were obtained for the polymer using flow synthesis. This study demonstrates that continuous flow synthesis will be promising in the preparation of conjugated polymers with high efficiency.