Synthesis of a Polymeric Electron Acceptor Based on Perylenediimide-Bridged Ladder Polysiloxane

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• 作者：Wenxin Fu ; Chang He ; Shidong Jiang ; Zhize Chen ; Jintao Zhang ; Zhibo Li ; Shouke Yan ; Rongben Zhang
• 刊名：Macromolecules
• 出版年：2011
• 出版时间：January 25, 2011
• 年：2011
• 卷：44
• 期：2
• 页码：203-207
• 全文大小：843K
• 年卷期：v.44,no.2(January 25, 2011)
• ISSN：1520-5835

文摘

A soluble perylenediimide (PDI) bridged ladder polysiloxane (PDI-LPS) was prepared using ladder superstructure (LS) directed dehydration polycondensation. LS was first assembled via synergistic interactions of hydrogen-bonding and 蟺鈭捪€ stacking of tetrasilanol monomers (M2s) as verified from XRD, ²⁹Si NMR, and VPO characterizations. The ladder regularity of PDI-LPS was confirmed by a narrow half-peak width (螖) of <1 ppm for SiO_2/2 unit in the ²⁹Si NMR spectra. The alignment of ladder chains was also demonstrated from high-resolution transmission electronic microscopy (HR-TEM) observations. We successfully used ladderlike structure to chemically confine PDI cores within one-dimensional polymeric semiconductor. The resulting PDI-LPS not only retained PDI鈥檚 optoelectronic properties but also gained enhanced solubility in common organic solvents and improved thermal stability.