摘要
传统的溶剂热或水热反应仍是一种用于合成结晶多孔材料的主流方法,如共价有机框架(COFs)。该过程合成COFs通常需要高温、高压的密闭体系和较长的反应时间,而采用温和高效的能量输入体系用于快速合成COFs仍具有挑战性。本研究通过电子束辐照,在室温下快速合成二维亚胺键连接的COFs。该过程中,辐射能作为一种新的能量输入模式替代传统的热能用于COFs合成。电子束辐照制备COFs能在室温下几分钟内实现,且该过程可调控,可用于大规模生产。吸收剂量对合成COFs的结晶性能、Brunauer-Emmett-Teller比表面积、微观形貌和热稳定性等产生至关重要的影响。该合成策略具有普适性,不仅成功合成出已知的刚性COFs,而且也合成了一系列新的柔性COFs。
The conventional solvothermal/hydrothermal reaction method is still a mainstream approach for synthesis of crystalline porous materials such as covalent organic frameworks(COFs).Their synthesis methods often require increased temperatures,closed systems with high pressures,and long reaction times.The provision of a mild and efficient energy input system for rapid synthesis of COFs is still challenging.We present a rapid room-temperature synthesis of two-dimensional imine-linked COFs through simple electron beam irradiation.Radiation energy is used as a new energy input mode instead of the conventional heating energy for the COF synthesis.Such synthesis by electron beam irradiation can be achieved at room temperature within minutes.In addition,the process can be adapted for large-scale production.The absorbed dose has crucial effects on the properties of the synthesized COFs,such as the crystallinity,Brunauer-Emmett-Teller surface area,morphology,and thermal stability.A series of successful syntheses of COFs,including not only the known rigid COFs,but also a series of new flexible COFs,demonstrates the generality of this approach.
作者
张明星
陈俊畅
张仕通
周小琪
何林玮
Matthew V.Sheridan
袁梦嘉
张茂江
陈龙
代星
马付银
王敬东
胡江涛
吴国忠
孔学谦
周如鸿
Thomas E.Albrecht-Schmitt
柴之芳
王殳凹
ZHANG Mingxing;CHEN Junchang;ZHANG Shitong;ZHOU Xiaoqi;HE Linwei;Matthew VSheridan;YUAN Mengjia;ZHANG Maojiang;CHEN Long;DAI Xing;MA Fuyin;WANG Jingdong;HU Jiangtao;WU Guozhong;KONG Xueqian;ZHOU Ruhong;Thomas EAlbrecht-Schmitt;CHAI Zhifang;WANG Shuao(State Key Laboratory of Radiation Medicine and Protection,School for Radiological and Interdisciplinary Sciences(RAD-X),and Collaborative Innovation Center of Medicine of Jiangsu Higher Education Institutions,Soochow University,Suzhou 215123,China;Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;University of Chinese Academy of Sciences,Beijing 100049,China;Department of Chemistry,Zhejiang University,Hangzhou 310027,China;Department of Chemistry and Biochemistry,Florida State University,Tallahassee,Florida 32306,United States)
出处
《辐射研究与辐射工艺学报》
CAS
CSCD
2020年第5期73-78,共6页
Journal of Radiation Research and Radiation Processing
基金
国家自然科学基金(21825601、21761132019和21790374)
中国博士后基金(2019M651802)资助。
关键词
结晶多孔材料
共价有机框架
电子束
辐照合成
Crystalline porous materials
Covalent organic frameworks
Electron beam
Radiation synthesis
