Noncovalent π-stacked robust topological organic framework.

Autor:	Meng D; Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095.; California NanoSystems Institute, University of California, Los Angeles, CA 90095., Yang JL; Department of Chemistry, University of California, Berkeley, CA 94720., Xiao C; Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, 100029 Beijing, China., Wang R; Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095.; California NanoSystems Institute, University of California, Los Angeles, CA 90095., Xing X; State Key Laboratory of Heavy Oil Processing, College of New Energy and Materials, China University of Petroleum (Beijing), 102249 Beijing, China., Kocak O; Department of Physics, Marmara University, 34722 Istanbul, Turkey., Aydin G; Department of Physics, Marmara University, 34722 Istanbul, Turkey., Yavuz I; Department of Physics, Marmara University, 34722 Istanbul, Turkey., Nuryyeva S; Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095., Zhang L; Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, 100029 Beijing, China., Liu G; Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, 100084 Beijing, China., Li Z; Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095; lizx@cup.edu.cn houk@chem.ucla.edu yangy@ucla.edu.; California NanoSystems Institute, University of California, Los Angeles, CA 90095.; State Key Laboratory of Heavy Oil Processing, College of New Energy and Materials, China University of Petroleum (Beijing), 102249 Beijing, China., Yuan S; Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 215123 Suzhou, China., Wang ZK; Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 215123 Suzhou, China., Wei W; Department of Chemistry, Capital Normal University, 100048 Beijing, China., Wang Z; Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, 100084 Beijing, China., Houk KN; Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095; lizx@cup.edu.cn houk@chem.ucla.edu yangy@ucla.edu., Yang Y; Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095; lizx@cup.edu.cn houk@chem.ucla.edu yangy@ucla.edu.; California NanoSystems Institute, University of California, Los Angeles, CA 90095.
Jazyk:	angličtina
Zdroj:	Proceedings of the National Academy of Sciences of the United States of America [Proc Natl Acad Sci U S A] 2020 Aug 25; Vol. 117 (34), pp. 20397-20403. Date of Electronic Publication: 2020 Aug 11.
DOI:	10.1073/pnas.2010733117
Abstrakt:	Organic frameworks (OFs) offer a novel strategy for assembling organic semiconductors into robust networks that facilitate transport, especially the covalent organic frameworks (COFs). However, poor electrical conductivity through covalent bonds and insolubility of COFs limit their practical applications in organic electronics. It is known that the two-dimensional intralayer π∙∙∙π transfer dominates transport in organic semiconductors. However, because of extremely labile inherent features of noncovalent π∙∙∙π interaction, direct construction of robust frameworks via noncovalent π∙∙∙π interaction is a difficult task. Toward this goal, we report a robust noncovalent π∙∙∙π interaction-stacked organic framework, namely πOF, consisting of a permanent three-dimensional porous structure that is held together by pure intralayer noncovalent π∙∙∙π interactions. The elaborate porous structure, with a 1.69-nm supramaximal micropore, is composed of fully conjugated rigid aromatic tetragonal-disphenoid-shaped molecules with four identical platforms. πOF shows excellent thermostability and high recyclability and exhibits self-healing properties by which the parent porosity is recovered upon solvent annealing at room temperature. Taking advantage of the long-range π∙∙∙π interaction, we demonstrate remarkable transport properties of πOF in an organic-field-effect transistor, and the mobility displays relative superiority over the traditional COFs. These promising results position πOF in a direction toward porous and yet conductive materials for high-performance organic electronics. Competing Interests: The authors declare no competing interest.
Databáze:	MEDLINE
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