Direct Synthesis of Ultrathin Crystalline Two-Dimensional Triazine Polymers from Aldoximes

作     者：Jianghong Zhen Jichuang Shen Tian Sun Congxu Wang Pengbo Lyu Yuxi Xu 

作者机构：School of EngineeringWestlake UniversityHangzhou 310024Zhejiang School of Materials Science and EngineeringXiangtan UniversityXiangtan 411105Hunan 

出 版 物：《CCS Chemistry》 (中国化学会会刊（英文）)

年 卷 期：2024年第6卷第4期

页      面：932-940页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：support by the National Natural Science Foundation of China(grant nos.22022510 and 51873039) the Science and Technology Innovation Program of Hunan Province(grant no.2021RC2086) 

主　　题：two-dimensional triazine polymer aldoxime monomers catalytic cyclotrimerization template-assisted synthesis potassium-ion battery 

摘      要：The efficient synthesis of ultrathin crystalline twodimensional(2D)polymers with well-defined repeating units is essential to realize their broad applications but remains a great ***,we report a new strategy to directly synthesize a series of few-layer 2D triazine-based polymers(2DTPs)via trimerization reaction of aromatic aldoximes in one step with a high yield of 85%using AlCl3 as catalyst under solvent-free *** obtained 2D-TPs show high crystallinity,a lateral size of several micrometers,an ultrathin thickness less than 2 nm,and good dispersibility and *** semi-in situ and detailed control experiments,we reveal that the 2D polymerization reaction is a two-step process of dehydration and then cyclotrimerization,and AlCl3 acts as not only catalyst but also an in situ generated template for promoting the formation of *** explored as a new polymeric anode for potassium-ion batteries,the 2D-TP displayed an extraordinary reversible specific capacity of 356 mAh g^(−1)at 0.05 A g^(−1),which is among the best performances ever reported,outstanding rate capability(153 mAh g^(−1)at 1 A g^(−1)),and excellent cycling stability with 95.1%capacity retention after 1000 cycles at 1 A g^(−1).