Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 139, Issue 25, Pages 8698-8704Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b04096
Keywords
-
Categories
Funding
- MOE under AcRF [ARC 19/15, MOE2014-T2-2-093, MOE2015-T2-2-057, MOE2016-T2-2-103, 2016-T1-001-147, 2016-T1-002-051]
- NTU [M4081296.070.500000]
- iFood Research Grant [M4081458.070.500000]
- Singapore Millennium Foundation in Singapore
Ask authors/readers for more resources
The ability to prepare ultrathin two-dimensional (2D) covalent organic framework (COF) nanosheets (NSs) in high yield is of great importance for the further exploration of their unique properties and potential applications. Herein, by elaborately designing and choosing two flexible molecules with C-3, molecular symmetry as building units, a novel imine-linked COF, namely, TPA-COF, with a hexagonal layered structure and sheet-like morphology, is synthesized. Since the flexible building units are integrated into the COF skeletons, the interlayer stacking becomes Weak, resulting in the easy exfoliation of TPA-COF into ultrathin 2D NSs. Impressively, for the first time, the detailed structural information, i.e., the pore channels and individual building units in the NSs, is clearly visualized by using the recently developed low-dose imaging technique of transmission electron microscopy (TEM). As a proof-of-concept application, the obtained ultrathin COF NSs ate used as a novel fluorescence sensing platform for the highly sensitive and selective detection of DNA.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available