利用C-Br键活化制备结构精确的硝基功能化有机多孔材料
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- 英文论文题名：C-Br Bond Activation:Preparation of Clean-structured Nitro-functionalized Porous Organic Materials
- 论文作者：黑泽峘 ; 周瑾修 ; 杨凯祥 ; 宋甘霖 ; 罗运军 ; 黄木华
- 英文论文作者：Ze-Huan Hei ; Jin-Xiu Zhou ; Kai-Xiang Yang ; Gan-Lin Song ; Yunjun Luo ; Mu-Hua Huang ; School of Materials Science and Engineering ; Beijing Institute of Technology
- 年：2016
- 作者机构：北京理工大学材料学院;
- 论文关键词：多孔芳香骨架材料 ; 二氧化碳吸附 ; Suzuki偶联 ; Ullmann偶联
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十二分会： 多孔功能材料
- 语种：中文
- 分类号：TB383.4
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十二分会 ; 多孔功能材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：188k
- 原文格式：D
- 会议级别：全国
摘要
为了应对气候变化对人类的生存和发展所构成的严重威胁,各国科学家们正积极发展用于CO_2吸附与分离的先进多孔材料。其中,多孔芳香骨架材料(porous aromatic frameworks,PAFs)以其独特的类金刚石结构所带来的高比表面积、优秀的热稳定性以及较高的CO_2吸附性能而备受关注。在PAFs材料的骨架基础上,我们希望引入硝基官能团以达到双重目的:一是在PAFs材料的骨架中引入硝基以提高其CO_2的吸附性能;二是利用硝基活化邻位的C-Br键,从而实现结构精确的NO_2-PAFs材料的高效构建。在此设计思想的指导下,我们通过Cu介导的Ullmann偶联反应制备了NO_2-PAF-1,利用Pd催化的Suzuki偶联反应制备了NO_2-PAF-2,通过红外光谱、元素分析,固体核磁和光电子能谱等手段对目标材料进行了结构鉴定。二者的BET比表面积分别为650 m~2/g和570 m~2/g,CO_2吸附量分别为50.0 cm~3/g和48.5 cm~3/g,显示硝基的存在对二氧化碳吸附的提高作用明显。
Climate change has become a threat to the life of human being.Facing this challenge,researchers around the world have developed varieties of porous materials for carbon capture and storage.Among them,porous aromatic frameworks are attracting interest for their ultrahigh surface area,good thermal stability and CO_2 capture capacity owing to their diamond-like structures.We intend to introduce nitro group to PAFs with hope of constructing nitro-functionalized PAFs with clear structure to improve PAFs' CO_2 capture capacity.Directed by such strategy,we successfully synthesized NO_2-PAF-1 via Cu-mediated Ullmann coupling and NO_2-PAF-2 via Pd catalyzed Suzuki coupling.Both frameworks were characterized by FT-IR,C MAS-NMR,XPS and elemental analysis.BET surface area of the two frameworks were measured to be 650 and 570 m~2/g and CO_2 capture capacity are 50.0and 48.5 cm/g separately,indicating that the introduction of nitro group lead to increase of CO_2 capture capacity.
Climate change has become a threat to the life of human being.Facing this challenge,researchers around the world have developed varieties of porous materials for carbon capture and storage.Among them,porous aromatic frameworks are attracting interest for their ultrahigh surface area,good thermal stability and CO_2 capture capacity owing to their diamond-like structures.We intend to introduce nitro group to PAFs with hope of constructing nitro-functionalized PAFs with clear structure to improve PAFs' CO_2 capture capacity.Directed by such strategy,we successfully synthesized NO_2-PAF-1 via Cu-mediated Ullmann coupling and NO_2-PAF-2 via Pd catalyzed Suzuki coupling.Both frameworks were characterized by FT-IR,C MAS-NMR,XPS and elemental analysis.BET surface area of the two frameworks were measured to be 650 and 570 m~2/g and CO_2 capture capacity are 50.0and 48.5 cm/g separately,indicating that the introduction of nitro group lead to increase of CO_2 capture capacity.
引文
[1]Ben,T.;Ren,H.;Ma,S.;Cao,D.Angew.Chem.Int.Ed.2009,48,9457.
[2]Hei,Z.-H.;Huang,M.-H.;Luo,Y.;Wang,Y.Polym.Chem.2016,7:770.
[2]Hei,Z.-H.;Huang,M.-H.;Luo,Y.;Wang,Y.Polym.Chem.2016,7:770.