Constructing two-dimensional crossed molecular packing through branching chain engineering of amino-indenofluorene derivatives. Issue 22 (25th May 2022)

• Record Type: Journal Article
• Authors: Fan, Zhi-Ping; Li, Xiang-Yang; Sun, Bing; Sun, Chun-Lin; Shi, Zi-Fa; Shao, Xiang-Feng; Zhang, Hao-Li
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 22(2022)
• Page Start: 8666
• Page End: 8673
• Publication Date: 2022-05-25
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d2tc01538b
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : The crystalline structures of the amino-indeno[1, 2- b ]fluorene-6, 12-dione derivatives can be precisely controlled to be either 1D lamellar or 2D crossed molecular packing motifs through tailoring the relative lengths of the branched side-chains. Abstract : Optimizing molecular packing to improve the charge transport properties of organic semiconductors is essential for solution processed organic electronics. Herein, we demonstrate a branching chain engineering strategy to optimize the molecular packing of the dialkylamino substituted indeno[1, 2- b ]fluorene-6, 12-dione (IFD) derivatives. Through tailoring the relative lengths of the branched side-chains, we can precisely control the crystalline structures to be either one dimensional (1D) lamellar or two dimensional (2D) crossed molecular packing motifs. The performance of solution processed organic thin-film transistors (OTFTs) reveals that the 2D crossed packing motif facilitates much higher mobility than the 1D lamellar packing motif. Our results suggest that branching chain engineering could be a powerful strategy to design organic semiconductors with 2D molecular packing for high performance OTFTs.