Confined Synthesis of Two-Dimensional Covalent Organic Framework Thin Films within Superspreading Water Layer

被引:262
作者
Hao, Qing [1 ,2 ,4 ]
Zhao, Chuangqi [3 ]
Sun, Bing [5 ]
Lu, Cheng [1 ,2 ,4 ]
Liu, Jian [1 ,2 ,4 ]
Liu, MingJie [3 ]
Wan, Li-Jun [1 ,2 ]
Wang, Dong [1 ,2 ,4 ]
机构
[1] Chinese Acad Sci, Inst Chem, Key Lab Mol Nanostruct & Nanotechnol, Beijing 100190, Peoples R China
[2] Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
[3] Beihang Univ, Int Res Inst Multidisciplinary Sci, Beijing Adv Innovat Ctr Biomed Engn, Sch Chem,Minist Educ,Key Lab Bioinspired Smart In, Beijing 100191, Peoples R China
[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[5] China Univ Geosci Beijing, Sch Sci, Beijing 100083, Peoples R China
基金
中国国家自然科学基金;
关键词
CRYSTALLINE; GRAPHENE; CHEMISTRY; POLYMERS;
D O I
10.1021/jacs.8b07120
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The confined synthesis of two-dimensional covalent organic framework (2D COF) thin films was developed by using thin superspreading water on the hydrogel immersed under oil as reactor. Through loading two monomers into oil and hydrogel, respectively, COF thin films are synthesized at the oil/water/hydrogel interface. This strategy provides a new way for synthesis of freestanding 2D COF thin films. Detailed characterizations of the COF thin films reveal homogeneous topography, large area, controllable thickness from 4 to 150 nm, and crystallinity with certain orientation. Young's modulus of COF film is measured by AFM indentation as 25.9 +/- 0.6 GPa, showing good mechanical properties. On the basis of the freestanding COF films, a nanofilter membrane and photoelectrochemical sensors for Ru3+ were successfully developed. Moreover, the strategy was extended to the synthesis of crystalline zeolitic imidazolate framework-8 thin film, which exhibited high application potential.
引用
收藏
页码:12152 / 12158
页数:7
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