Issue 27, 2019

High-efficiency synthesis of a naphthalene-diimide-based conjugated polymer using continuous flow technology for organic field-effect transistors

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 cm2 V−1 s−1) with Ion/Ioff ratios of 106 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.

Graphical abstract: High-efficiency synthesis of a naphthalene-diimide-based conjugated polymer using continuous flow technology for organic field-effect transistors

Supplementary files

Article information

Article type
Paper
Submitted
03 Apr 2019
Accepted
13 Jun 2019
First published
15 Jun 2019

J. Mater. Chem. C, 2019,7, 8450-8456

High-efficiency synthesis of a naphthalene-diimide-based conjugated polymer using continuous flow technology for organic field-effect transistors

W. Wang, R. Chen, Y. Hu, H. Lu, L. Qiu, Y. Ding, D. Sun and G. Zhang, J. Mater. Chem. C, 2019, 7, 8450 DOI: 10.1039/C9TC01785B

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