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dc.contributor.authorEnquan Jinen_US
dc.contributor.authorKeyu Gengen_US
dc.contributor.authorShuai Fuen_US
dc.contributor.authorSheng Yangen_US
dc.contributor.authorNarissa Kanlayakanen_US
dc.contributor.authorMatthew A. Addicoaten_US
dc.contributor.authorNawee Kungwanen_US
dc.contributor.authorJohannes Geursen_US
dc.contributor.authorHong Xuen_US
dc.contributor.authorMischa Bonnen_US
dc.contributor.authorHai I. Wangen_US
dc.contributor.authorJurgen Smeten_US
dc.contributor.authorTim Kowalczyken_US
dc.contributor.authorDonglin Jiangen_US
dc.description.abstractMost organic/polymeric semiconductors are p-type semiconductors, whereas their n-type versions are limited in both availability and carrier mobility. How to develop high-rate n-type organic/polymeric semiconductors remains challenging. Here, we report an approach to high-rate n-type semiconductors via topology-directed polycondensation of conventional p-type knots with n-type isoindigo linkers to form non-conjugated tetragonal and hexagonal two-dimensional polymeric frameworks. The polymers are planar in conformation and show flattened frontier levels, which enable electrons to move along the non-conjugated polymeric backbones. The eclipsed face-to-face stack reduces reorganization energy and greatly strengthens electronic coupling, thus enabling band-like electron conduction perpendicular to polymer layers. A device recording electron mobility as high as 8.2 cm2 V−1 s−1 was achieved with Hall effect measurements, whereas time- and frequency-resolved terahertz spectroscopy revealed a benchmark mobility of 13.3 cm2 V−1 s−1. These new mechanistic insights with exceptional mobility open the way to high-rate n-type organic/polymeric semiconductors.en_US
dc.subjectBiochemistry, Genetics and Molecular Biologyen_US
dc.subjectChemical Engineeringen_US
dc.subjectEnvironmental Scienceen_US
dc.subjectMaterials Scienceen_US
dc.titleExceptional electron conduction in two-dimensional covalent organic frameworksen_US
article.volume7en_US Planck Institute for Polymer Researchen_US University of Singaporeen_US Planck Institute for Solid State Researchen_US Trent Universityen_US Washington Universityen_US Mai Universityen_US
Appears in Collections:CMUL: Journal Articles

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