Covalent organic nanosheets with large lateral size and high aspect ratio synthesized by Langmuir-Blodgett method  

作　　者：Youdong Cheng Sai Kishore Ravi Yuxiang Wang Jifang Tao Yuandong Gu Swee Ching Tan Dan Zhao 

机构地区：[1]Department of Chemical & Biomolecular Engineering, National University of Singapore [2]Department of Materials Science and Engineering, National University of Singapore [3]Institute of Microelectronics,A*STAR (Agency for Science, Technology and Research)

出　　处：《Chinese Chemical Letters》2018年第6期869-872,共4页中国化学快报（英文版）

基　　金：supported by National University of Singapore No. CENGas R-261-508-001-646);Ministry of Education – Singapore ( 13No. MOE Ac RF Tier 1 R-279-000-472-112)

摘　　要：Two-dimensional（2 D） materials have attracted increasing attentions recently due to their unique physical and chemical properties. We herein report the synthesis of four chemically stable 2 D covalent organic nanosheets（CONs） with large lateral sizes（up to 200 mm） and high aspect ratios（〉20 000） at the air-water interface through the Langmuir-Blodgett method. These CONs exhibit good crystallinity proved by high resolution transmission electron microscopy（HRTEM） and selected area electron diffraction（SAED）. In addition, the hydrophobicity of these CONs can be systematically adjusted by the introduction of various functional groups, making them suitable as functional coating and membrane materials.Two-dimensional（2 D） materials have attracted increasing attentions recently due to their unique physical and chemical properties. We herein report the synthesis of four chemically stable 2 D covalent organic nanosheets（CONs） with large lateral sizes（up to 200 mm） and high aspect ratios（〉20 000） at the air-water interface through the Langmuir-Blodgett method. These CONs exhibit good crystallinity proved by high resolution transmission electron microscopy（HRTEM） and selected area electron diffraction（SAED）. In addition, the hydrophobicity of these CONs can be systematically adjusted by the introduction of various functional groups, making them suitable as functional coating and membrane materials.

关 键 词：Two dimensional materials Covalent organic nanosheets Schiff base chemistry LANGMUIR-BLODGETT Functional surface coating 

分 类 号：TB383.1[一般工业技术—材料科学与工程]