Crystalline Unipolymer Monolayer with High Modulus and Conductivity. Issue 4 (14th December 2022)

• Record Type: Journal Article
• Authors: Wang, Jinxin; Zhang, Hao; Li, Shumu; Ding, Caijun; Zhao, Yongjie; Long, Xiuzhen; Wei, Chang; Wang, Yanfang; Li, Yongfang; Shen, Lingyun; Cui, Shuxun; Hong, Wenjing; Li, Mao
• Is Part Of: Angewandte Chemie international edition. Volume 62:Issue 4(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-12-14
• Subjects: Crystalline Polymer -- High Conductivity -- High Modulus -- Iterative Synthesis -- Monolayer; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.202216838
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: The synthesis of crystalline polymer with a well‐defined orientated state and a two‐dimensional crystalline size beyond a micrometer will be essential to achieve the highest physical feature of polymer material but remain challenging. Herein, we show the synthesis of the crystalline unipolymer monolayer with an unusual ultrahigh modulus that is higher than the ITO substrate and high conductance by simultaneous electrosynthesis and manipulation. We find that the polymer monolayer has fully extended in the vertical and unidirectional orientation, which is proposed to approach their theoretically highest density, modulus, and conductivity among all aggregation formations of the current polymer. The modulus and current density can reach 40 and 1000 times higher than their amorphous counterpart. It is also found that these monolayers exhibit the bias‐ and length‐dependent multiple charge states and asymmetrically negative differential resistance (NDR) effect, indicating that this unique molecular tailoring and ordering design is promising for multilevel resistive memory devices. Our work demonstrates the creation of a crystalline polymer monolayer for approaching the physical limit of polymer electronic materials and also provides an opportunity to challenge the synthetically iterative limit of an isolated ultra‐long polymer. Abstract : One of the ultimate goals in polymer science is how to approach physical limits such as density, modulus, conductivity, etc. Our work demonstrates the creation of crystalline polymer monolayers for approaching the physical limits of polymer electronic materials and also provides an opportunity to challenge the synthetically iterative limit of an isolated ultra‐long polymer.