Journal of the American Chemical Society
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TTF-COFs after I2 doping for 48 hrs remained highly crystalline
and structurally intact (Figures S16 and S17).
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We further investigated the electrical conductivities of I2 doped
3D-TTF-COFs. Typically, the doped samples were compressed
into cylindrical pellets with a diameter of 0.5 cm and a thickness
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10-5 S cm-1)46,47 and TTF-based MOFs (~ 10-7 S cm-1).48 Compared
with 2D-TTF-COFs, the higher conductivities in 3D-TTF-COFs
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are fully oxidized into TTF radical cations due to interconnected
channels and higher surface areas in 3D COFs. As for TTF-based
MOFs, the carboxyl units are strong electron-withdrawing groups,
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repeatedly at least four times without obvious electroactive loss
(Figures S40 and S41).
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ASSOCIATED CONTENT
Supporting Information
Methods and synthetic procedures, SEM, FTIR, solid state 13C
NMR, TGA, BET plots, and unit cell parameters. This material is
AUTHOR INFORMATION
Corresponding Author
*qrfang@jlu.edu.cn
Notes
The authors declare no competing financial interests.
ACKNOWLEDGMENT
This work was supported by National Natural Science Foundation
of China (21571079, 21621001, 21390394, 21571076, and
21571078), 111 project (B07016 and B17020), and the program
for JLU Science and Technology Innovative Research Team. Q.F.
and V.V. acknowledge the Thousand Talents program (China).
(21) Jin, E. Q.; Asada, M.; Xu, Q.; Dalapati, S.; Addicoat, M. A.;
Brady, M. A.; Xu, H.; Nakamura, T.; Heine, T.; Chen, Q. H.; Jiang, D. L.
Two-Dimensional
sp2
Carbon–Conjugated
Covalent
Organic
Frameworks. Science 2017, 357, 673.
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